如何 return 来自具有 RETURNING 子句的动态 SQL 的集合

Question

我有一个这样的 PL/SQL 块：

CREATE OR REPLACE TYPE NUMBER_TABLE_TYPE AS TABLE OF NUMBER;

DECLARE

    updatedEmp NUMBER_TABLE_TYPE;
    sqlstr VARCHAR2(1000);
    tableName VARCHAR2(30) := 'EMPLOYEE';
    deptId NUMBER := 12;

BEGIN

    sqlstr := 'UPDATE '||tableName||' SET SALARY = SALARY * 2 WHERE DEPT_ID = :deptId '||
              'RETURNING EMP_ID BULK COLLECT INTO :res'; 
    EXECUTE IMMEDIATE sqlstr BULK COLLECT INTO updatedEmp USING deptId;

END;

RETURNING BULK COLLECT INTO 子句对于静态 DML 来说很简单，但在我的应用程序中它是动态的。我尝试了几种方法，但都没有成功。知道如何实现吗？

Answer 1

CREATE OR REPLACE TYPE NUMBER_TABLE_TYPE AS TABLE OF NUMBER;

DECLARE

    updatedEmp NUMBER_TABLE_TYPE;
    sqlstr VARCHAR2(1000);
    tableName VARCHAR2(30) := 'EMPLOYEE';
    deptId NUMBER := 12;

BEGIN

    sqlstr := 'UPDATE '||tableName||' SET SALARY = SALARY * 2 WHERE DEPT_ID = :deptId '||
              'RETURNING EMP_ID  INTO :res'; 

EXECUTE IMMEDIATE sqlstr 
      USING deptId RETURNING BULK COLLECT INTO updatedEmp ;

END;