Informatica中的动态SQL

问题描述

我有一个通过SQL转换执行动态sql的映射。动态sql存储在Oracle表中，我需要向该查询添加字符串参数。

在此示例查询中，与COL4和COL5比较的值在日志中正确输出，但与COL6比较的值在查询中输出为'$$ STRING_PARA'-

'SELECT COL1,COL2,COL3 FROM TABLE
  WHERE COL4 = $$NUMERIC_PARA
   AND COL5 = ''Y''
   AND COL6 = ''||$$STRING_PARA||'' '

$$ STRING_PARA在日志开头正确输出。我尝试省略管道并增加报价数量，但似乎无济于事。

有人做过类似的事情吗？

解决方法

我想您想通过将Informatica输入变量替换为映射值来运行查询。可能像这样

 ' SELECT COL1,COL2,COL3 FROM TABLE
  WHERE COL4 = $$NUMERIC_PARA
   AND COL5 = ''Y''
   AND COL6 = ''$$STRING_PARA'' ' 

在PL / SQL中

SQL> set serveroutput on size unlimited echo on lines 200
SQL> @test.sql
SQL> declare
  2  v_query varchar2(4000) := ' SELECT COL1,COL3 FROM TABLE
  3    WHERE COL4 = $$NUMERIC_PARA
  4     AND COL5 = ''Y''
  5     AND COL6 = ''$$STRING_PARA'' ' ;
  6  begin
  7  dbms_output.put_line(v_query);
  8  end;
  9  /
SELECT COL1,COL3 FROM TABLE
  WHERE COL4 = $$NUMERIC_PARA
   AND COL5 = 'Y'
   AND COL6 = '$$STRING_PARA'

PL/SQL procedure successfully completed.

通过替换输入变量进行运行时替换和执行

SQL>  select object_id,object_name from dba_objects where object_name = 'MY_TEST' ;

 OBJECT_ID OBJECT_NAME
---------- --------------------------------------------------------------------------------------------------------------------------------
   8897475 MY_TEST

SQL> @test.sql 8897475 MY_TEST
SQL> declare
  2  v_query varchar2(4000) := ' SELECT count(*) from dba_objects
  3    WHERE object_id = &1
  4     AND object_name = ''&2'' ' ;
  5  v_counter pls_integer;
  6  begin
  7  dbms_output.put_line(v_query);
  8  execute immediate v_query into v_counter;
  9  dbms_output.put_line('Counter is '||v_counter||' ');
 10  end;
 11  /
old   3:   WHERE object_id = &1
new   3:   WHERE object_id = 8897475
old   4:    AND object_name = ''&2'' ' ;
new   4:    AND object_name = ''MY_TEST'' ' ;
SELECT count(*) from dba_objects
  WHERE object_id = 8897475
   AND object_name = 'MY_TEST'
Counter is 1

PL/SQL procedure successfully completed.

SQL>
   

它应该以相同的方式工作，因为单引号的转义应该是相同的。

,

感谢您的建议-“ $$ STRING_PARA”成功了。

我当时看不到，因为映射中还有另一个问题使其无法正常工作。