如何使用关联数组在表中插入数据？

Question

我已经使用来自游标的信息填充了一个关联数组，现在我想将关联数组信息插入到一个表中。这怎么可能？考虑关联数组是从记录创建的。

SET SERVEROUTPUT ON

DECLARE
  TYPE rec_depts_info IS RECORD(
      v_dept_id   departments.department_id%TYPE,
      v_dept_name departments.department_name%TYPE);
  TYPE typ_depts_info IS TABLE OF rec_depts_info
      INDEX BY PLS_INTEGER;

  CURSOR cur_depts_info_1
  IS
     SELECT department_id, department_name
     FROM   departments
     WHERE  department_id   IS NOT NULL
     AND    department_name IS NOT NULL;

  t_depts_info_1 typ_depts_info;
  rec_depts_info_1 rec_depts_info;

  v_counter_1 PLS_INTEGER := 1;
  v_counter_2 PLS_INTEGER := 1;
BEGIN
  v_counter_1 := v_counter_1 + 1;

  FOR depts_info IN cur_depts_info_1
  LOOP
      t_depts_info_1(v_counter_1).v_dept_id   := depts_info.department_id;
      t_depts_info_1(v_counter_1).v_dept_name := depts_info.department_name;

      EXIT WHEN cur_depts_info_1%NOTFOUND;

  END LOOP;

  LOOP
    INSERT INTO tabla_pruebas
    VALUES(t_depts_info_1(v_counter_2).v_dept_id,
           t_depts_info_1(v_counter_2).v_dept_name)
    RETURNING column_1, column_2
    INTO      rec_depts_info_1.v_dept_id, rec_depts_info_1.v_dept_name;

    DBMS_OUTPUT.PUT_LINE('DEPT ID: ' || rec_depts_info_1(v_counter_2).v_dept_id
                         || ' DEPT NAME: ' ||
                         rec_depts_info_1(v_counter_2).v_dept_name);

    v_counter_2 := v_counter_2 + 1;

    EXIT WHEN SQL%NOTFOUND;
  END LOOP;
END;

我正在尝试使用简单的 LOOP 将数据插入新表中，但收到以下错误：

Informe de error -
ORA-06550: line 51, column 41:
PLS-00222: no function with name 'REC_DEPTS_INFO_1' exists in this scope
ORA-06550: line 51, column 5:
PL/SQL: Statement ignored
06550. 00000 -  "line %s, column %s:\n%s"
*Cause:    Usually a PL/SQL compilation error.
*Action:

谢谢！！！

Answer 1

您可以使用 the FORALL bulk syntax 一次性插入所有数组值，而不是显式循环：

  FORALL i IN t_depts_info_1.first..t_depts_info_1.last
    INSERT INTO tabla_pruebas
    VALUES(t_depts_info_1(i).v_dept_id,
           t_depts_info_1(i).v_dept_name);

Read more 关于FORALL 和其他批量查询和绑定主题。使用BULK COLLECT 来填充您的数组，您可以将代码简化为：

DECLARE
  TYPE rec_depts_info IS RECORD(
      v_dept_id   departments.department_id%TYPE,
      v_dept_name departments.department_name%TYPE);
  TYPE typ_depts_info IS TABLE OF rec_depts_info
      INDEX BY PLS_INTEGER;

  t_depts_info_1 typ_depts_info;
BEGIN
  SELECT department_id, department_name
  BULK COLLECT INTO t_depts_info_1
  FROM   departments
  WHERE  department_id   IS NOT NULL
  AND    department_name IS NOT NULL;

  FORALL i IN t_depts_info_1.first..t_depts_info_1.last
    INSERT INTO tabla_pruebas
    VALUES(t_depts_info_1(i).v_dept_id,
           t_depts_info_1(i).v_dept_name);
END;
/

虽然使用这个人为的示例，您根本不需要集合或任何 PL/SQL，但您可以做一个简单的insert...select：

INSERT INTO tabla_pruebas (column_1, column_2)
SELECT department_id, department_name
FROM   departments
WHERE  department_id   IS NOT NULL
AND    department_name IS NOT NULL;