我嘗試執行以下命令: UPDATE DB_TEST.STOCK_ITEMS
SET STATUS = (SELECT *
FROM (SELECT STOCK_ITEM_STATUS
FROM DB_TEST.STOCK_ITEMS_HISTORY
WHERE STOCK_ITEM_ID = DB_TEST.STOCK_ITE
我想創建一個幫助器存儲過程以保存重複的代碼。 我寫了下面的存儲過程,它採用表名,status_id和ROWID。 PROCEDURE sp_update_stage_status(p_table_name IN VARCHAR2,
p_status_id IN NUMBER,
p_rowid IN ROWID)
AS
BEGIN
ex
我在子查詢中查詢子查詢。內子查詢涉及的外部查詢結果: SELECT
employees.ENAME,
employees.DEPTNO,
(
SELECT * FROM
(SELECT DNAME FROM DEPT WHERE DEPT.DEPTNO = employees.DEPTNO)
) DNAME
FROM EMP