PL / SQL - dbms输出execute immediate的结果 [英] PL/SQL - dbms output the result of an execute immediate

问题描述

我想能够打印一个查询的所有结果（应该由TableA的PK过滤），并为TABLEA中的每个PK执行此操作。
这是我到目前为止：

I would like to be able to print out all results for a query (that should be filtered by the PK from TableA) and do this for each PK in TABLEA. This is what i have so far:

 DECLARE
    CURSOR Curs IS SELECT DISTINCT PKID FROM TABLEA;
    BEGIN
    FOR rec IN Curs 
          LOOP
              EXECUTE IMMEDIATE 
              'SELECT * FROM (
              SELECT cola,
              FKTABLEA,
              colc,
              lag (cold,1) OVER (ORDER BY cold) AS cold
              FROM tableB
              WHERE FKTABLEA = :1)
              WHERE colc != cold
              order by cola' using Curs.PKID;

              DBMS_OUTPUT.PUT_LINE('OUTPUT ALL RESULTS FROM THE QUERY HERE');
          END LOOP;     
    END;

推荐答案

不需要使用EXECUTE IMMEDIATE。并且只有完全手动的打印所有结果的方法：

There is no need to use EXECUTE IMMEDIATE. And there's only the fully manual way of printing all the results:

DECLARE
    CURSOR Curs IS SELECT DISTINCT PKID FROM TABLEA;
BEGIN
    FOR rec IN Curs LOOP
        FOR r IN (
            SELECT * FROM (
                SELECT cola,
                    FKTABLEA,
                    colc,
                    lag (cold,1) OVER (ORDER BY cold) AS cold
                FROM tableB
                WHERE FKTABLEA = rec.PKID)
            WHERE colc != cold
            order by cola )
        LOOP
            DBMS_OUTPUT.PUT_LINE(r.cola || ',' || r.colb || ',' || r.colc || ',' || r.cold);
        END LOOP;
    END LOOP;     
END;

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