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>> Exporting Table Data to SQL*Loader Files [<a href=http://www.jsp001.com/forum/showthread.php?goto=newpost&threadid=251>查看别人的评论</a>]<br>

<hr><p>由 webmaster 发布于: 2001-02-05 11:31</p><p><img src="images/icons/icon10.gif" alt="Talking" border=0> </p><p><br><br>下面是一个如何把指定table里的数据通过写好的script来导到一个SQL*LOADERL里的方法。包括3个脚本：<br>ExportTable.sql <br>GetLoaderControl.sql <br>GetLoaderData.sql (can be joined)<br>通过这些脚本把指定的table数据按照ascii存成CSV文件格式(可在MS Excel里读取)。同时也产生一个控制文件，在SQL*Loader导入CSV文件时用到。<br><br>先用文本编辑器把下面的3个脚本存成3个.sql文件，然后<br>SQL&gt;@ExportTable <br><br>下面是这3个文件<br>--文件1:ExportTable.sql<br>--执行者:用户<br>--目的: Export table data to SQLLoader files<br><br>accept TableName prompt 'Table to export:'<br><br>set concat ~<br><br>prompt Data file - &amp;TableName~.csv<br><br>prompt Control file - &amp;TableName~.ctl<br><br>spool &amp;TableName~.sql<br><br>start GetLoaderData &amp;TableName<br><br>spool &amp;TableName.csv<br><br>start &amp;TableName<br><br>spool &amp;TableName~.ctl<br><br>start GetLoaderControl &amp;TableName<br><br>spool off<br><br>host del &amp;TableName~.sql<br><br>rem host rm &amp;TableName~.sql<br><br>set termout on<br><br><br>--------------------------------------------------------------------------------------------------------------<br>--文件2:GetLoaderControl.sql<br>--执行者: ExportTable.sql<br>--目的: Create SQLLoader control file<br><br>set pause off<br><br>set newpage none<br><br>set heading off<br><br>set concat ~<br><br>set feedback off<br><br>set verify off<br><br>set linesize 80<br><br>set trimspool on<br><br>set trimout off<br><br>set termout off<br><br>column ord noprint<br><br>select 1 ord,'load data' from dual<br><br>union<br><br>select 2 ord,'infile &amp;&amp;TableName.csv' from dual<br><br>union <br><br>select 3 ord,'append' from dual<br><br>union<br><br>select 4 ord,'into table &amp;TableName' from dual<br><br>union <br><br>select 5 ord,'fields terminated by ' || ''';''' from dual<br><br>union<br><br>select 6 ord,'(' from dual<br><br>union<br><br>select 10*column_id ord, column_name || ' ' || <br><br>decode(data_type,<br><br>'NUMBER','decimal external',<br><br>'VARCHAR2','char',<br><br>'CHAR','char',<br><br>'DATE','date') || ','<br><br>from user_tab_columns <br><br>where table_name = upper('&amp;TableName')<br><br>and column_id not in ( select max(column_id) <br><br>from user_tab_columns <br><br>where table_name = upper('&amp;TableName') )<br><br>union<br><br>select 1000*column_id ord,column_name || ' ' || <br><br>decode(data_type,<br><br>'NUMBER','decimal external',<br><br>'VARCHAR2','char',<br><br>'CHAR','char',<br><br>'DATE','date') || ')'<br><br>from user_tab_columns <br><br>where table_name=upper('&amp;TableName') <br><br>and column_id in ( select max(column_id) <br><br>from user_tab_columns <br><br>where table_name = upper('&amp;TableName') )<br><br>order by ord;<br><br><br>--------------------------------------------------------------------------------------------------------------<br>--文件3:GetLoaderData.sql<br>--执行者: ExportTable.sql<br>--目的: Create script extracting data from table<br><br>set pause off<br><br>set newpage none<br><br>set heading off<br><br>set concat ~<br><br>set feedback off<br><br>set verify off<br><br>set linesize 1000<br><br>set trimspool on<br><br>set trimout on<br><br>set termout off<br><br>column ord noprint<br><br>select 0 ord, 'select',null,null,'rtrim('||column_name ||')'<br><br>from user_tab_columns <br><br>where table_name = upper('&amp;&amp;TableName') <br><br>and column_id=1<br><br>union<br><br>select column_id ord, '||' , ''';''' , '||' ,'rtrim('||column_name ||')'<br><br>from user_tab_columns <br><br>where table_name = upper('&amp;TableName') <br><br>and column_id &gt; 1<br><br>union<br><br>select 1000 ord, '||' , ''';''' , null, 'from &amp;TableName order by 1;'<br><br>from dual<br><br>order by ord;<br><br><br></p></td>
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