邪恶八进制信息安全团队技术讨论组 » 常用数据库类{ Database Security } » [转载]t-sql数据库管理系统的实用技巧

ring04h 2006-3-28 00:12

[转载]t-sql数据库管理系统的实用技巧

<P>信息来源：csdn</P>
<P style="TEXT-INDENT: 2em"><SPAN id=ArticleContent1_ArticleContent1_lblContent><STRONG>一、只复制一个表结构，不复制数据</STRONG></SPAN></P><SPAN>
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<DIV><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">top</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">0</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">*</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">into</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff0000">[</SPAN><SPAN style="COLOR: #ff0000">t1</SPAN><SPAN style="COLOR: #ff0000">]</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">from</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff0000">[</SPAN><SPAN style="COLOR: #ff0000">t2</SPAN><SPAN style="COLOR: #ff0000">]</SPAN></DIV></DIV>
<P><STRONG>　　二、获取数据库中某个对象的创建脚本</STRONG></P>
<P>　　1、先用下面的脚本创建一个函数<BR></P>
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<DIV><SPAN style="COLOR: #0000ff">if</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">exists</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">1</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">from</SPAN><SPAN style="COLOR: #000000">sysobjects</SPAN><SPAN style="COLOR: #0000ff">where</SPAN><SPAN style="COLOR: #000000">id</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #ff00ff">object_id</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">fgetscript</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">)</SPAN><SPAN style="COLOR: #808080">and</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff00ff">objectproperty</SPAN><SPAN style="COLOR: #000000">(id,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">IsInlineFunction</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">)</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">0</SPAN><SPAN style="COLOR: #000000">)<BR></SPAN><SPAN style="COLOR: #0000ff">drop</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">function</SPAN><SPAN style="COLOR: #000000">fgetscript<BR></SPAN><SPAN style="COLOR: #0000ff">go</SPAN><SPAN style="COLOR: #000000"><BR><BR></SPAN><SPAN style="COLOR: #0000ff">create</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">function</SPAN><SPAN style="COLOR: #000000">fgetscript(<BR></SPAN><SPAN style="COLOR: #008000">@servername</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">varchar</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">50</SPAN><SPAN style="COLOR: #000000">)</SPAN><SPAN style="COLOR: #008080">--</SPAN><SPAN style="COLOR: #008080">服务器名</SPAN><SPAN style="COLOR: #008080"><BR></SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #008000">@userid</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">varchar</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">50</SPAN><SPAN style="COLOR: #000000">)</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">sa</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008080">--</SPAN><SPAN style="COLOR: #008080">用户名,如果为nt验证方式,则为空</SPAN><SPAN style="COLOR: #008080"><BR></SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #008000">@password</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">varchar</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">50</SPAN><SPAN style="COLOR: #000000">)</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #ff0000">''</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008080">--</SPAN><SPAN style="COLOR: #008080">密码</SPAN><SPAN style="COLOR: #008080"><BR></SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #008000">@databasename</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">varchar</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">50</SPAN><SPAN style="COLOR: #000000">)</SPAN><SPAN style="COLOR: #008080">--</SPAN><SPAN style="COLOR: #008080">数据库名称</SPAN><SPAN style="COLOR: #008080"><BR></SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #008000">@objectname</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">varchar</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">250</SPAN><SPAN style="COLOR: #000000">)</SPAN><SPAN style="COLOR: #008080">--</SPAN><SPAN style="COLOR: #008080">对象名</SPAN><SPAN style="COLOR: #008080"><BR></SPAN><SPAN style="COLOR: #000000"><BR>)</SPAN><SPAN style="COLOR: #0000ff">returns</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">varchar</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">8000</SPAN><SPAN style="COLOR: #000000">)<BR></SPAN><SPAN style="COLOR: #0000ff">as</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">begin</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">declare</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@re</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">varchar</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">8000</SPAN><SPAN style="COLOR: #000000">)</SPAN><SPAN style="COLOR: #008080">--</SPAN><SPAN style="COLOR: #008080">返回脚本</SPAN><SPAN style="COLOR: #008080"><BR></SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">declare</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@srvid</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">int</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #008000">@dbsid</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">int</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008080">--</SPAN><SPAN style="COLOR: #008080">定义服务器、数据库集id</SPAN><SPAN style="COLOR: #008080"><BR></SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">declare</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@dbid</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">int</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #008000">@tbid</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">int</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008080">--</SPAN><SPAN style="COLOR: #008080">数据库、表id</SPAN><SPAN style="COLOR: #008080"><BR></SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">declare</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@err</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">int</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #008000">@src</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">varchar</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">255</SPAN><SPAN style="COLOR: #000000">),</SPAN><SPAN style="COLOR: #008000">@desc</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">varchar</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">255</SPAN><SPAN style="COLOR: #000000">)</SPAN><SPAN style="COLOR: #008080">--</SPAN><SPAN style="COLOR: #008080">错误处理变量</SPAN><SPAN style="COLOR: #008080"><BR></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #008080">--</SPAN><SPAN style="COLOR: #008080">创建sqldmo对象</SPAN><SPAN style="COLOR: #008080"><BR></SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">exec</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@err</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000">sp_oacreate</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">sqldmo.sqlserver</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #008000">@srvid</SPAN><SPAN style="COLOR: #000000">output<BR></SPAN><SPAN style="COLOR: #0000ff">if</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@err</SPAN><SPAN style="COLOR: #808080"><></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">0</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">goto</SPAN><SPAN style="COLOR: #000000">lberr<BR><BR></SPAN><SPAN style="COLOR: #008080">--</SPAN><SPAN style="COLOR: #008080">连接服务器</SPAN><SPAN style="COLOR: #008080"><BR></SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">if</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff00ff">isnull</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #008000">@userid</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff0000">''</SPAN><SPAN style="COLOR: #000000">)</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #ff0000">''</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008080">--</SPAN><SPAN style="COLOR: #008080">如果是Nt验证方式</SPAN><SPAN style="COLOR: #008080"><BR></SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">begin</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">exec</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@err</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000">sp_oasetproperty</SPAN><SPAN style="COLOR: #008000">@srvid</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">loginsecure</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">1</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">if</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@err</SPAN><SPAN style="COLOR: #808080"><></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">0</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">goto</SPAN><SPAN style="COLOR: #000000">lberr<BR><BR></SPAN><SPAN style="COLOR: #0000ff">exec</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@err</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000">sp_oamethod</SPAN><SPAN style="COLOR: #008000">@srvid</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">connect</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #0000ff">null</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #008000">@servername</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">end</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">else</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">exec</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@err</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000">sp_oamethod</SPAN><SPAN style="COLOR: #008000">@srvid</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">connect</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #0000ff">null</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #008000">@servername</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #008000">@userid</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #008000">@password</SPAN><SPAN style="COLOR: #000000"><BR><BR></SPAN><SPAN style="COLOR: #0000ff">if</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@err</SPAN><SPAN style="COLOR: #808080"><></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">0</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">goto</SPAN><SPAN style="COLOR: #000000">lberr<BR><BR></SPAN><SPAN style="COLOR: #008080">--</SPAN><SPAN style="COLOR: #008080">获取数据库集</SPAN><SPAN style="COLOR: #008080"><BR></SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">exec</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@err</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000">sp_oagetproperty</SPAN><SPAN style="COLOR: #008000">@srvid</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">databases</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #008000">@dbsid</SPAN><SPAN style="COLOR: #000000">output<BR></SPAN><SPAN style="COLOR: #0000ff">if</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@err</SPAN><SPAN style="COLOR: #808080"><></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">0</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">goto</SPAN><SPAN style="COLOR: #000000">lberr<BR><BR></SPAN><SPAN style="COLOR: #008080">--</SPAN><SPAN style="COLOR: #008080">获取要取得脚本的数据库id</SPAN><SPAN style="COLOR: #008080"><BR></SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">exec</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@err</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000">sp_oamethod</SPAN><SPAN style="COLOR: #008000">@dbsid</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">item</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #008000">@dbid</SPAN><SPAN style="COLOR: #000000">output,</SPAN><SPAN style="COLOR: #008000">@databasename</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">if</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@err</SPAN><SPAN style="COLOR: #808080"><></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">0</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">goto</SPAN><SPAN style="COLOR: #000000">lberr<BR><BR></SPAN><SPAN style="COLOR: #008080">--</SPAN><SPAN style="COLOR: #008080">获取要取得脚本的对象id</SPAN><SPAN style="COLOR: #008080"><BR></SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">exec</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@err</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000">sp_oamethod</SPAN><SPAN style="COLOR: #008000">@dbid</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">getobjectbyname</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #008000">@tbid</SPAN><SPAN style="COLOR: #000000">output,</SPAN><SPAN style="COLOR: #008000">@objectname</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">if</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@err</SPAN><SPAN style="COLOR: #808080"><></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">0</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">goto</SPAN><SPAN style="COLOR: #000000">lberr<BR><BR></SPAN><SPAN style="COLOR: #008080">--</SPAN><SPAN style="COLOR: #008080">取得脚本</SPAN><SPAN style="COLOR: #008080"><BR></SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">exec</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@err</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000">sp_oamethod</SPAN><SPAN style="COLOR: #008000">@tbid</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">script</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #008000">@re</SPAN><SPAN style="COLOR: #000000">output<BR></SPAN><SPAN style="COLOR: #0000ff">if</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@err</SPAN><SPAN style="COLOR: #808080"><></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">0</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">goto</SPAN><SPAN style="COLOR: #000000">lberr<BR><BR></SPAN><SPAN style="COLOR: #008080">--</SPAN><SPAN style="COLOR: #008080">print@re</SPAN><SPAN style="COLOR: #008080"><BR></SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">return</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #008000">@re</SPAN><SPAN style="COLOR: #000000">)<BR><BR>lberr:<BR></SPAN><SPAN style="COLOR: #0000ff">exec</SPAN><SPAN style="COLOR: #000000">sp_oageterrorinfo</SPAN><SPAN style="COLOR: #0000ff">NULL</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #008000">@src</SPAN><SPAN style="COLOR: #000000">out,</SPAN><SPAN style="COLOR: #008000">@desc</SPAN><SPAN style="COLOR: #000000">out<BR></SPAN><SPAN style="COLOR: #0000ff">declare</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@errb</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">varbinary</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">4</SPAN><SPAN style="COLOR: #000000">)<BR></SPAN><SPAN style="COLOR: #0000ff">set</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@errb</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #ff00ff">cast</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #008000">@err</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">as</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">varbinary</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">4</SPAN><SPAN style="COLOR: #000000">))<BR></SPAN><SPAN style="COLOR: #0000ff">exec</SPAN><SPAN style="COLOR: #000000">master..xp_varbintohexstr</SPAN><SPAN style="COLOR: #008000">@errb</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #008000">@re</SPAN><SPAN style="COLOR: #000000">out<BR></SPAN><SPAN style="COLOR: #0000ff">set</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@re</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">错误号:</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #808080">+</SPAN><SPAN style="COLOR: #008000">@re</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #808080">+</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">char</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">13</SPAN><SPAN style="COLOR: #000000">)</SPAN><SPAN style="COLOR: #808080">+</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">错误源:</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #808080">+</SPAN><SPAN style="COLOR: #008000">@src</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #808080">+</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">char</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">13</SPAN><SPAN style="COLOR: #000000">)</SPAN><SPAN style="COLOR: #808080">+</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">错误描述:</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #808080">+</SPAN><SPAN style="COLOR: #008000">@desc</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">return</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #008000">@re</SPAN><SPAN style="COLOR: #000000">)<BR></SPAN><SPAN style="COLOR: #0000ff">end</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">go</SPAN><SPAN style="COLOR: #000000"><BR><BR></SPAN></DIV></DIV></SPAN>
<P style="TEXT-INDENT: 2em">2、用法如下<BR>　　用法如下, </P>
<DIV style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; BACKGROUND: #e6e6e6; PADDING-BOTTOM: 4px; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: windowtext 0.5pt solid">
<DIV><SPAN style="COLOR: #0000ff">print</SPAN><SPAN style="COLOR: #000000">dbo.fgetscript(</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">服务器名</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">用户名</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">密码</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">数据库名</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">表名或其它对象名</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">)<BR></SPAN></DIV></DIV>
<P>　　3、如果要获取库里所有对象的脚本，如如下方式<BR></P>
<DIV style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; BACKGROUND: #e6e6e6; PADDING-BOTTOM: 4px; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: windowtext 0.5pt solid">
<DIV><SPAN style="COLOR: #0000ff">declare</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@name</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">varchar</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">250</SPAN><SPAN style="COLOR: #000000">)<BR></SPAN><SPAN style="COLOR: #0000ff">declare</SPAN><SPAN style="COLOR: #000000">#aa</SPAN><SPAN style="COLOR: #0000ff">cursor</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">for</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000">name</SPAN><SPAN style="COLOR: #0000ff">from</SPAN><SPAN style="COLOR: #000000">sysobjects</SPAN><SPAN style="COLOR: #0000ff">where</SPAN><SPAN style="COLOR: #000000">xtype</SPAN><SPAN style="COLOR: #808080">not</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">in</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">S</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">PK</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">D</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">X</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">L</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">)<BR></SPAN><SPAN style="COLOR: #0000ff">open</SPAN><SPAN style="COLOR: #000000">#aa<BR></SPAN><SPAN style="COLOR: #0000ff">fetch</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">next</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">from</SPAN><SPAN style="COLOR: #000000">#aa</SPAN><SPAN style="COLOR: #0000ff">into</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@name</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">while</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #008000">@@fetch_status</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">0</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">begin</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">print</SPAN><SPAN style="COLOR: #000000">dbo.fgetscript(</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">onlytiancai</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">sa</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">sa</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">database</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #008000">@name</SPAN><SPAN style="COLOR: #000000">)<BR></SPAN><SPAN style="COLOR: #0000ff">fetch</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">next</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">from</SPAN><SPAN style="COLOR: #000000">#aa</SPAN><SPAN style="COLOR: #0000ff">into</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@name</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">end</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">close</SPAN><SPAN style="COLOR: #000000">#aa<BR></SPAN><SPAN style="COLOR: #0000ff">deallocate</SPAN><SPAN style="COLOR: #000000">#aa<BR></SPAN></DIV></DIV>
<P>　　4、声明，此函数是csdn邹建邹老大提供的</P>
<P><STRONG>　　三、分隔字符串</STRONG></P>
<P><STRONG>　　</STRONG>如果有一个用逗号分割开的字符串，比如说"a,b,c,d,1,2,3,4"，如何用t-sql获取这个字符串有几个元素，获取第几个元素的值是多少呢？因为t-sql里没有split函数，也没有数组的概念，所以只能自己写几个函数了。</P>
<P>　　1、获取元素个数的函数<BR></P>
<DIV style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; BACKGROUND: #e6e6e6; PADDING-BOTTOM: 4px; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: windowtext 0.5pt solid">
<DIV><SPAN style="COLOR: #0000ff">create</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">function</SPAN><SPAN style="COLOR: #000000">getstrarrlength(</SPAN><SPAN style="COLOR: #008000">@str</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">varchar</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">8000</SPAN><SPAN style="COLOR: #000000">))<BR></SPAN><SPAN style="COLOR: #0000ff">returns</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">int</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">as</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">begin</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">declare</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@int_return</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">int</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">declare</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@start</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">int</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">declare</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@next</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">int</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">declare</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@location</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">int</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@str</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #808080">+</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@str</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">+</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@str</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #ff00ff">replace</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #008000">@str</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">,,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">)<BR></SPAN><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@start</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">1</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@next</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">1</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@location</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff00ff">charindex</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #008000">@str</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #008000">@start</SPAN><SPAN style="COLOR: #000000">)<BR></SPAN><SPAN style="COLOR: #0000ff">while</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #008000">@location</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080"><></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">0</SPAN><SPAN style="COLOR: #000000">)<BR></SPAN><SPAN style="COLOR: #0000ff">begin</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@start</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@location</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">+</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">1</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@location</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff00ff">charindex</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #008000">@str</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #008000">@start</SPAN><SPAN style="COLOR: #000000">)<BR></SPAN><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@next</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #008000">@next</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">+</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">1</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">end</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@int_return</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@next</SPAN><SPAN style="COLOR: #808080">-</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">2</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">return</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@int_return</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">end</SPAN><SPAN style="COLOR: #000000"><BR></SPAN></DIV></DIV>
<P style="TEXT-INDENT: 2em">2、获取指定索引的值的函数<BR></P>
<DIV style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; BACKGROUND: #e6e6e6; PADDING-BOTTOM: 4px; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: windowtext 0.5pt solid">
<DIV><SPAN style="COLOR: #0000ff">create</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">function</SPAN><SPAN style="COLOR: #000000">getstrofindex(</SPAN><SPAN style="COLOR: #008000">@str</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">varchar</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">8000</SPAN><SPAN style="COLOR: #000000">),</SPAN><SPAN style="COLOR: #008000">@index</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">int</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">0</SPAN><SPAN style="COLOR: #000000">)<BR></SPAN><SPAN style="COLOR: #0000ff">returns</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">varchar</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">8000</SPAN><SPAN style="COLOR: #000000">)<BR></SPAN><SPAN style="COLOR: #0000ff">as</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">begin</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">declare</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@str_return</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">varchar</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">8000</SPAN><SPAN style="COLOR: #000000">)<BR></SPAN><SPAN style="COLOR: #0000ff">declare</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@start</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">int</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">declare</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@next</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">int</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">declare</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@location</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">int</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@start</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">1</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@next</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">1</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008080">--</SPAN><SPAN style="COLOR: #008080">如果习惯从0开始则select@next=0</SPAN><SPAN style="COLOR: #008080"><BR></SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@location</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff00ff">charindex</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #008000">@str</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #008000">@start</SPAN><SPAN style="COLOR: #000000">)<BR></SPAN><SPAN style="COLOR: #0000ff">while</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #008000">@location</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080"><></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">0</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">and</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@index</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">></SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@next</SPAN><SPAN style="COLOR: #000000">)<BR></SPAN><SPAN style="COLOR: #0000ff">begin</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@start</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@location</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">+</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">1</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@location</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff00ff">charindex</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #008000">@str</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #008000">@start</SPAN><SPAN style="COLOR: #000000">)<BR></SPAN><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@next</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #008000">@next</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">+</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">1</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">end</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">if</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@location</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">0</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@location</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #ff00ff">len</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #008000">@str</SPAN><SPAN style="COLOR: #000000">)</SPAN><SPAN style="COLOR: #808080">+</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">1</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008080">--</SPAN><SPAN style="COLOR: #008080">如果是因为没有逗号退出，则认为逗号在字符串后</SPAN><SPAN style="COLOR: #008080"><BR></SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@str_return</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff00ff">substring</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #008000">@str</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #008000">@start</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #008000">@location</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">-</SPAN><SPAN style="COLOR: #008000">@start</SPAN><SPAN style="COLOR: #000000">)</SPAN><SPAN style="COLOR: #008080">--</SPAN><SPAN style="COLOR: #008080">@start肯定是逗号之后的位置或者就是初始值1</SPAN><SPAN style="COLOR: #008080"><BR></SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">if</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #008000">@index</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080"><></SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@next</SPAN><SPAN style="COLOR: #000000">)</SPAN><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@str_return</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff0000">''</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008080">--</SPAN><SPAN style="COLOR: #008080">如果二者不相等，则是因为逗号太少，或者@index小于@next的初始值1。</SPAN><SPAN style="COLOR: #008080"><BR></SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">return</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #008000">@str_return</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">end</SPAN><SPAN style="COLOR: #000000"><BR></SPAN></DIV></DIV>
<P>　　3、测试<BR></P>
<DIV style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; BACKGROUND: #e6e6e6; PADDING-BOTTOM: 4px; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: windowtext 0.5pt solid">
<DIV><SPAN style="COLOR: #0000ff">SELECT</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff0000">[</SPAN><SPAN style="COLOR: #ff0000">dbo</SPAN><SPAN style="COLOR: #ff0000">]</SPAN><SPAN style="COLOR: #000000">.</SPAN><SPAN style="COLOR: #ff0000">[</SPAN><SPAN style="COLOR: #ff0000">getstrarrlength</SPAN><SPAN style="COLOR: #ff0000">]</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">1,2,3,4,a,b,c,d</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">)<BR></SPAN><SPAN style="COLOR: #0000ff">SELECT</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff0000">[</SPAN><SPAN style="COLOR: #ff0000">dbo</SPAN><SPAN style="COLOR: #ff0000">]</SPAN><SPAN style="COLOR: #000000">.</SPAN><SPAN style="COLOR: #ff0000">[</SPAN><SPAN style="COLOR: #ff0000">getstrofindex</SPAN><SPAN style="COLOR: #ff0000">]</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">1,2,3,4,a,b,c,d</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">5</SPAN><SPAN style="COLOR: #000000">)<BR></SPAN></DIV></DIV>
<P><STRONG>　　四、一条语句执行跨越若干个数据库</STRONG></P>
<P><STRONG>　　</STRONG>我要在一条语句里操作不同的服务器上的不同的数据库里的不同的表,怎么办呢?</P>
<P>　　第一种方法:</P>
<DIV style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; BACKGROUND: #e6e6e6; PADDING-BOTTOM: 4px; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: windowtext 0.5pt solid">
<DIV><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">*</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">from</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">OPENDATASOURCE</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">SQLOLEDB</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">DataSource=远程ip;UserID=sa;Password=密码</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">).库名.dbo.表名<BR></SPAN></DIV></DIV>
<P style="TEXT-INDENT: 2em">第二种方法:<BR>　　先使用联结服务器:<BR></P>
<DIV style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; BACKGROUND: #e6e6e6; PADDING-BOTTOM: 4px; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: windowtext 0.5pt solid">
<DIV><SPAN style="COLOR: #0000ff">EXEC</SPAN><SPAN style="COLOR: #000000">sp_addlinkedserver</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">别名</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff0000">''</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">MSDASQL</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #0000ff">NULL</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #0000ff">NULL</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">DRIVER={SQLServer};SERVER=远程名;UID=用户;PWD=密码;</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">exec</SPAN><SPAN style="COLOR: #000000">sp_addlinkedsrvlogin</SPAN><SPAN style="COLOR: #008000">@rmtsrvname</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">别名</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #008000">@useself</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">false</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #008000">@locallogin</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">sa</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #008000">@rmtuser</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">sa</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #008000">@rmtpassword</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">密码</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">GO</SPAN><SPAN style="COLOR: #000000"><BR></SPAN></DIV></DIV>
<P>　　然后你就可以如下：<BR></P>
<DIV style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; BACKGROUND: #e6e6e6; PADDING-BOTTOM: 4px; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: windowtext 0.5pt solid">
<DIV><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">*</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">from</SPAN><SPAN style="COLOR: #000000">别名.库名.dbo.表名<BR></SPAN><SPAN style="COLOR: #0000ff">insert</SPAN><SPAN style="COLOR: #000000">库名.dbo.表名</SPAN><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">*</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">from</SPAN><SPAN style="COLOR: #000000">别名.库名.dbo.表名<BR></SPAN><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">*</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">into</SPAN><SPAN style="COLOR: #000000">库名.dbo.新表名</SPAN><SPAN style="COLOR: #0000ff">from</SPAN><SPAN style="COLOR: #000000">别名.库名.dbo.表名<BR></SPAN><SPAN style="COLOR: #0000ff">go</SPAN><SPAN style="COLOR: #000000"><BR></SPAN></DIV></DIV>
<P><STRONG>　　五、怎样获取一个表中所有的字段信息<BR></STRONG>　　蛙蛙推荐：怎样获取一个表中所有字段的信息 <BR>　　先创建一个视图<BR></P>
<DIV style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; BACKGROUND: #e6e6e6; PADDING-BOTTOM: 4px; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: windowtext 0.5pt solid">
<DIV><SPAN style="COLOR: #0000ff">Create</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">view</SPAN><SPAN style="COLOR: #000000">fielddesc<BR></SPAN><SPAN style="COLOR: #0000ff">as</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000">o.name</SPAN><SPAN style="COLOR: #0000ff">as</SPAN><SPAN style="COLOR: #000000">table_name,c.name</SPAN><SPAN style="COLOR: #0000ff">as</SPAN><SPAN style="COLOR: #000000">field_name,t.name</SPAN><SPAN style="COLOR: #0000ff">as</SPAN><SPAN style="COLOR: #000000">type,c.length</SPAN><SPAN style="COLOR: #0000ff">as</SPAN><SPAN style="COLOR: #000000"><BR><BR>length,c.isnullable</SPAN><SPAN style="COLOR: #0000ff">as</SPAN><SPAN style="COLOR: #000000">isnullable,</SPAN><SPAN style="COLOR: #ff00ff">convert</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">varchar</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">30</SPAN><SPAN style="COLOR: #000000">),p.value)</SPAN><SPAN style="COLOR: #0000ff">as</SPAN><SPAN style="COLOR: #000000">desp<BR></SPAN><SPAN style="COLOR: #0000ff">from</SPAN><SPAN style="COLOR: #000000">syscolumnsc<BR></SPAN><SPAN style="COLOR: #0000ff">join</SPAN><SPAN style="COLOR: #000000">systypest</SPAN><SPAN style="COLOR: #0000ff">on</SPAN><SPAN style="COLOR: #000000">c.xtype</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000">t.xusertype<BR></SPAN><SPAN style="COLOR: #0000ff">join</SPAN><SPAN style="COLOR: #000000">sysobjectso</SPAN><SPAN style="COLOR: #0000ff">on</SPAN><SPAN style="COLOR: #000000">o.id</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000">c.id<BR></SPAN><SPAN style="COLOR: #ff00ff">left</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">join</SPAN><SPAN style="COLOR: #000000">syspropertiesp</SPAN><SPAN style="COLOR: #0000ff">on</SPAN><SPAN style="COLOR: #000000">p.smallid</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000">c.colid</SPAN><SPAN style="COLOR: #808080">and</SPAN><SPAN style="COLOR: #000000">p.id</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000">o.id<BR></SPAN><SPAN style="COLOR: #0000ff">where</SPAN><SPAN style="COLOR: #000000">o.xtype</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">U</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000"><BR><BR></SPAN></DIV></DIV>
<P>　　查询时:<BR></P>
<DIV style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; BACKGROUND: #e6e6e6; PADDING-BOTTOM: 4px; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: windowtext 0.5pt solid">
<DIV><SPAN style="COLOR: #0000ff">Select</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">*</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">from</SPAN><SPAN style="COLOR: #000000">fielddesc</SPAN><SPAN style="COLOR: #0000ff">where</SPAN><SPAN style="COLOR: #000000">table_name</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">你的表名</SPAN><SPAN style="COLOR: #ff0000">'</SPAN></DIV></DIV>
<P style="TEXT-INDENT: 2em">还有个更强的语句，是邹建写的，也写出来吧<BR></P>
<DIV style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; BACKGROUND: #e6e6e6; PADDING-BOTTOM: 4px; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: windowtext 0.5pt solid">
<DIV><SPAN style="COLOR: #0000ff">SELECT</SPAN><SPAN style="COLOR: #000000"><BR>(</SPAN><SPAN style="COLOR: #ff00ff">case</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">when</SPAN><SPAN style="COLOR: #000000">a.colorder</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">1</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">then</SPAN><SPAN style="COLOR: #000000">d.name</SPAN><SPAN style="COLOR: #0000ff">else</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff0000">''</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">end</SPAN><SPAN style="COLOR: #000000">)N</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">表名</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,<BR>a.colorderN</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">字段序号</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,<BR>a.nameN</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">字段名</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,<BR>(</SPAN><SPAN style="COLOR: #ff00ff">case</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">when</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff00ff">COLUMNPROPERTY</SPAN><SPAN style="COLOR: #000000">(a.id,a.name,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">IsIdentity</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">)</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">1</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">then</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">√</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #0000ff">else</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff0000">''</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">end</SPAN><SPAN style="COLOR: #000000">)N</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">标识</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,<BR>(</SPAN><SPAN style="COLOR: #ff00ff">case</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">when</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #0000ff">SELECT</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff00ff">count</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #808080">*</SPAN><SPAN style="COLOR: #000000">)<BR></SPAN><SPAN style="COLOR: #0000ff">FROM</SPAN><SPAN style="COLOR: #000000">sysobjects<BR></SPAN><SPAN style="COLOR: #0000ff">WHERE</SPAN><SPAN style="COLOR: #000000">(name</SPAN><SPAN style="COLOR: #808080">in</SPAN><SPAN style="COLOR: #000000"><BR>(</SPAN><SPAN style="COLOR: #0000ff">SELECT</SPAN><SPAN style="COLOR: #000000">name<BR></SPAN><SPAN style="COLOR: #0000ff">FROM</SPAN><SPAN style="COLOR: #000000">sysindexes<BR></SPAN><SPAN style="COLOR: #0000ff">WHERE</SPAN><SPAN style="COLOR: #000000">(id</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000">a.id)</SPAN><SPAN style="COLOR: #808080">AND</SPAN><SPAN style="COLOR: #000000">(indid</SPAN><SPAN style="COLOR: #808080">in</SPAN><SPAN style="COLOR: #000000"><BR>(</SPAN><SPAN style="COLOR: #0000ff">SELECT</SPAN><SPAN style="COLOR: #000000">indid<BR></SPAN><SPAN style="COLOR: #0000ff">FROM</SPAN><SPAN style="COLOR: #000000">sysindexkeys<BR></SPAN><SPAN style="COLOR: #0000ff">WHERE</SPAN><SPAN style="COLOR: #000000">(id</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000">a.id)</SPAN><SPAN style="COLOR: #808080">AND</SPAN><SPAN style="COLOR: #000000">(colid</SPAN><SPAN style="COLOR: #808080">in</SPAN><SPAN style="COLOR: #000000"><BR>(</SPAN><SPAN style="COLOR: #0000ff">SELECT</SPAN><SPAN style="COLOR: #000000">colid<BR></SPAN><SPAN style="COLOR: #0000ff">FROM</SPAN><SPAN style="COLOR: #000000">syscolumns<BR></SPAN><SPAN style="COLOR: #0000ff">WHERE</SPAN><SPAN style="COLOR: #000000">(id</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000">a.id)</SPAN><SPAN style="COLOR: #808080">AND</SPAN><SPAN style="COLOR: #000000">(name</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000">a.name)))))))</SPAN><SPAN style="COLOR: #808080">AND</SPAN><SPAN style="COLOR: #000000"><BR>(xtype</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">PK</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">))</SPAN><SPAN style="COLOR: #808080">></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">0</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">then</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">√</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">else</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff0000">''</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">end</SPAN><SPAN style="COLOR: #000000">)N</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">主键</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,<BR>b.nameN</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">类型</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,<BR>a.lengthN</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">占用字节数</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,<BR></SPAN><SPAN style="COLOR: #ff00ff">COLUMNPROPERTY</SPAN><SPAN style="COLOR: #000000">(a.id,a.name,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">PRECISION</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">)</SPAN><SPAN style="COLOR: #0000ff">as</SPAN><SPAN style="COLOR: #000000">N</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">长度</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,<BR></SPAN><SPAN style="COLOR: #ff00ff">isnull</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #ff00ff">COLUMNPROPERTY</SPAN><SPAN style="COLOR: #000000">(a.id,a.name,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">Scale</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">),</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">0</SPAN><SPAN style="COLOR: #000000">)</SPAN><SPAN style="COLOR: #0000ff">as</SPAN><SPAN style="COLOR: #000000">N</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">小数位数</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,<BR>(</SPAN><SPAN style="COLOR: #ff00ff">case</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">when</SPAN><SPAN style="COLOR: #000000">a.isnullable</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">1</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">then</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">√</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #0000ff">else</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff0000">''</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">end</SPAN><SPAN style="COLOR: #000000">)N</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">允许空</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,<BR></SPAN><SPAN style="COLOR: #ff00ff">isnull</SPAN><SPAN style="COLOR: #000000">(e.</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">text</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff0000">''</SPAN><SPAN style="COLOR: #000000">)N</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">默认值</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,<BR></SPAN><SPAN style="COLOR: #ff00ff">isnull</SPAN><SPAN style="COLOR: #000000">(g.</SPAN><SPAN style="COLOR: #ff0000">[</SPAN><SPAN style="COLOR: #ff0000">value</SPAN><SPAN style="COLOR: #ff0000">]</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff0000">''</SPAN><SPAN style="COLOR: #000000">)</SPAN><SPAN style="COLOR: #0000ff">AS</SPAN><SPAN style="COLOR: #000000">N</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">字段说明</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #008080">--</SPAN><SPAN style="COLOR: #008080">into##tx</SPAN><SPAN style="COLOR: #008080"><BR></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">FROM</SPAN><SPAN style="COLOR: #000000">syscolumnsa</SPAN><SPAN style="COLOR: #ff00ff">left</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">join</SPAN><SPAN style="COLOR: #000000">systypesb<BR></SPAN><SPAN style="COLOR: #0000ff">on</SPAN><SPAN style="COLOR: #000000">a.xtype</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000">b.xusertype<BR></SPAN><SPAN style="COLOR: #0000ff">inner</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">join</SPAN><SPAN style="COLOR: #000000">sysobjectsd<BR></SPAN><SPAN style="COLOR: #0000ff">on</SPAN><SPAN style="COLOR: #000000">a.id</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000">d.id</SPAN><SPAN style="COLOR: #808080">and</SPAN><SPAN style="COLOR: #000000">d.xtype</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">U</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">and</SPAN><SPAN style="COLOR: #000000">d.name</SPAN><SPAN style="COLOR: #808080"><></SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">dtproperties</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #ff00ff">left</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">join</SPAN><SPAN style="COLOR: #000000">syscommentse<BR></SPAN><SPAN style="COLOR: #0000ff">on</SPAN><SPAN style="COLOR: #000000">a.cdefault</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000">e.id<BR></SPAN><SPAN style="COLOR: #ff00ff">left</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">join</SPAN><SPAN style="COLOR: #000000">syspropertiesg<BR></SPAN><SPAN style="COLOR: #0000ff">on</SPAN><SPAN style="COLOR: #000000">a.id</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000">g.id</SPAN><SPAN style="COLOR: #808080">AND</SPAN><SPAN style="COLOR: #000000">a.colid</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000">g.smallid<BR></SPAN><SPAN style="COLOR: #0000ff">order</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">by</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff00ff">object_name</SPAN><SPAN style="COLOR: #000000">(a.id),a.colorder<BR><BR></SPAN></DIV></DIV>
<P style="TEXT-INDENT: 2em">六、时间格式转换问题</STRONG></P>
<P><STRONG>　　</STRONG>因为新开发的软件需要用一些旧软件生成的一些数据，在时间格式上不统一，只能手工转换，研究了一下午写了三条语句，以前没怎么用过convert函数和case语句，还有"+"操作符在不同上下文环境也会起到不同的作用，把我搞晕了要，不过现在看来是差不多弄好了。</P>
<P>　　1、把所有"70.07.06"这样的值变成"1970-07-06"<BR></P>
<DIV style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; BACKGROUND: #e6e6e6; PADDING-BOTTOM: 4px; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: windowtext 0.5pt solid">
<DIV><SPAN style="COLOR: #0000ff">UPDATE</SPAN><SPAN style="COLOR: #000000">lvshi<BR></SPAN><SPAN style="COLOR: #0000ff">SET</SPAN><SPAN style="COLOR: #000000">shengri</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">19</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">+</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff00ff">REPLACE</SPAN><SPAN style="COLOR: #000000">(shengri,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">.</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">-</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">)<BR></SPAN><SPAN style="COLOR: #0000ff">WHERE</SPAN><SPAN style="COLOR: #000000">(zhiyezheng</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">139770070153</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">)</SPAN></DIV></DIV>
<P>　　2、在"1970-07-06"里提取"70","07","06"</P>
<DIV style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; BACKGROUND: #e6e6e6; PADDING-BOTTOM: 4px; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: windowtext 0.5pt solid">
<DIV><SPAN style="COLOR: #0000ff">SELECT</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff00ff">SUBSTRING</SPAN><SPAN style="COLOR: #000000">(shengri,</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">3</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">2</SPAN><SPAN style="COLOR: #000000">)</SPAN><SPAN style="COLOR: #0000ff">AS</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff00ff">year</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff00ff">SUBSTRING</SPAN><SPAN style="COLOR: #000000">(shengri,</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">6</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">2</SPAN><SPAN style="COLOR: #000000">)</SPAN><SPAN style="COLOR: #0000ff">AS</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff00ff">month</SPAN><SPAN style="COLOR: #000000">,<BR></SPAN><SPAN style="COLOR: #ff00ff">SUBSTRING</SPAN><SPAN style="COLOR: #000000">(shengri,</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">9</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">2</SPAN><SPAN style="COLOR: #000000">)</SPAN><SPAN style="COLOR: #0000ff">AS</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff00ff">day</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">FROM</SPAN><SPAN style="COLOR: #000000">lvshi<BR></SPAN><SPAN style="COLOR: #0000ff">WHERE</SPAN><SPAN style="COLOR: #000000">(zhiyezheng</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">139770070153</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">)<BR></SPAN></DIV></DIV>
<P>　　3、把一个时间类型字段转换成"1970-07-06"<BR></P>
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<DIV><SPAN style="COLOR: #0000ff">UPDATE</SPAN><SPAN style="COLOR: #000000">lvshi<BR></SPAN><SPAN style="COLOR: #0000ff">SET</SPAN><SPAN style="COLOR: #000000">shenling</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff00ff">CONVERT</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">varchar</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">4</SPAN><SPAN style="COLOR: #000000">),</SPAN><SPAN style="COLOR: #ff00ff">YEAR</SPAN><SPAN style="COLOR: #000000">(shenling))<BR></SPAN><SPAN style="COLOR: #808080">+</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">-</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">+</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff00ff">CASE</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">WHEN</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff00ff">LEN</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #ff00ff">MONTH</SPAN><SPAN style="COLOR: #000000">(shenling))</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">1</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">THEN</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">0</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">+</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff00ff">CONVERT</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">varchar</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">2</SPAN><SPAN style="COLOR: #000000">),<BR></SPAN><SPAN style="COLOR: #ff00ff">month</SPAN><SPAN style="COLOR: #000000">(shenling))</SPAN><SPAN style="COLOR: #0000ff">ELSE</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff00ff">CONVERT</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">varchar</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">2</SPAN><SPAN style="COLOR: #000000">),</SPAN><SPAN style="COLOR: #ff00ff">month</SPAN><SPAN style="COLOR: #000000">(shenling))<BR></SPAN><SPAN style="COLOR: #0000ff">END</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">+</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">-</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">+</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff00ff">CASE</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">WHEN</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff00ff">LEN</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="COLOR: #ff00ff">day</SPAN><SPAN style="COLOR: #000000">(shenling))</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">1</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">THEN</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">0</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">+</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff00ff">CONVERT</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">char</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">2</SPAN><SPAN style="COLOR: #000000">),<BR></SPAN><SPAN style="COLOR: #ff00ff">day</SPAN><SPAN style="COLOR: #000000">(shenling))</SPAN><SPAN style="COLOR: #0000ff">ELSE</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff00ff">CONVERT</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">varchar</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">2</SPAN><SPAN style="COLOR: #000000">),</SPAN><SPAN style="COLOR: #ff00ff">day</SPAN><SPAN style="COLOR: #000000">(shenling))</SPAN><SPAN style="COLOR: #0000ff">END</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">WHERE</SPAN><SPAN style="COLOR: #000000">(zhiyezheng</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">139770070153</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000">)<BR></SPAN></DIV></DIV>
<P style="TEXT-INDENT: 2em">七、分区视图</STRONG><BR>　　分区视图是提高查询性能的一个很好的办法<BR></P>
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<DIV><SPAN style="COLOR: #008080">--</SPAN><SPAN style="COLOR: #008080">看下面的示例</SPAN><SPAN style="COLOR: #008080"><BR></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #008080">--</SPAN><SPAN style="COLOR: #008080">示例表</SPAN><SPAN style="COLOR: #008080"><BR></SPAN><SPAN style="COLOR: #0000ff">create</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">table</SPAN><SPAN style="COLOR: #000000">tempdb.dbo.t_10(<BR>id</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">int</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">primary</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">key</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">check</SPAN><SPAN style="COLOR: #000000">(id</SPAN><SPAN style="COLOR: #808080">between</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">1</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">and</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">10</SPAN><SPAN style="COLOR: #000000">),name</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">varchar</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">10</SPAN><SPAN style="COLOR: #000000">))<BR><BR></SPAN><SPAN style="COLOR: #0000ff">create</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">table</SPAN><SPAN style="COLOR: #000000">pubs.dbo.t_20(<BR>id</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">int</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">primary</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">key</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">check</SPAN><SPAN style="COLOR: #000000">(id</SPAN><SPAN style="COLOR: #808080">between</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">11</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">and</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">20</SPAN><SPAN style="COLOR: #000000">),name</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">varchar</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">10</SPAN><SPAN style="COLOR: #000000">))<BR><BR></SPAN><SPAN style="COLOR: #0000ff">create</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">table</SPAN><SPAN style="COLOR: #000000">northwind.dbo.t_30(<BR>id</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">int</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">primary</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">key</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">check</SPAN><SPAN style="COLOR: #000000">(id</SPAN><SPAN style="COLOR: #808080">between</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">21</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">and</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">30</SPAN><SPAN style="COLOR: #000000">),name</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #000000">varchar</SPAN><SPAN style="COLOR: #000000">(</SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">10</SPAN><SPAN style="COLOR: #000000">))<BR></SPAN><SPAN style="COLOR: #0000ff">go</SPAN><SPAN style="COLOR: #000000"><BR><BR></SPAN><SPAN style="COLOR: #008080">--</SPAN><SPAN style="COLOR: #008080">分区视图</SPAN><SPAN style="COLOR: #008080"><BR></SPAN><SPAN style="COLOR: #0000ff">create</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">view</SPAN><SPAN style="COLOR: #000000">v_t<BR></SPAN><SPAN style="COLOR: #0000ff">as</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">*</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">from</SPAN><SPAN style="COLOR: #000000">tempdb.dbo.t_10<BR></SPAN><SPAN style="COLOR: #0000ff">union</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">all</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">*</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">from</SPAN><SPAN style="COLOR: #000000">pubs.dbo.t_20<BR></SPAN><SPAN style="COLOR: #0000ff">union</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">all</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">*</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">from</SPAN><SPAN style="COLOR: #000000">northwind.dbo.t_30<BR></SPAN><SPAN style="COLOR: #0000ff">go</SPAN><SPAN style="COLOR: #000000"><BR><BR></SPAN><SPAN style="COLOR: #008080">--</SPAN><SPAN style="COLOR: #008080">插入数据</SPAN><SPAN style="COLOR: #008080"><BR></SPAN><SPAN style="COLOR: #0000ff">insert</SPAN><SPAN style="COLOR: #000000">v_t</SPAN><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">1</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">aa</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">union</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">all</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">2</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">bb</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">union</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">all</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">11</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">cc</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">union</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">all</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">12</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">dd</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">union</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">all</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">21</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">ee</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #0000ff">union</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #808080">all</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="COLOR: #0000ff">select</SPAN><SPAN style="COLOR: #000000"></SPAN><SPAN style="FONT-WEIGHT: bold; COLOR: #800000">22</SPAN><SPAN style="COLOR: #000000">,</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #ff0000">ff</SPAN><SPAN style="COLOR: #ff0000">'</SPAN><SPAN style="COLOR: #000000"><BR><BR></SPAN><SPAN style="COLOR: #008080">--</SPAN><SPAN style="COLOR: #008080">更新数据</SPAN><SPAN style="COLOR: #008080"><BR></SPAN><SPAN style="COLOR: #0000ff">update</SPAN><SPAN style="COLOR: #000000">v_t</SPAN><SPAN style="COLOR: #0000ff">set</SPAN><SPAN style="COLOR: #000000">name</SPAN><SPAN style="COLOR: #808080">=</SPAN><SPAN style="COLOR: #000000">name</SPAN><SP