调用EXEC()会生成错误:找不到存储过程

Question

我需要在表上调用一个名称只会在运行时知道的名称.

我有一个存储过程,动态地使用tablename和criteria来表示delete语句,然后将该字符串作为参数传递给EXEC()函数(显然,所有这些都在一个事务中).

当我运行存储过程时,我收到一个错误 - 找不到存储过程 - 参考我动态制定并发送到EXEC()的语句.

这是我的代码:

DECLARE @dynTab AS varchar(50), @dynDelete AS varchar(255)
    DECLARE @crsr CURSOR
    SET @crsr = CURSOR FAST_FORWARD
    FOR
    SELECT dyn_tablename FROM dyn_tab WHERE dyn_doc_type_id IN (SELECT doc_id FROM tree_tab WHERE id = @id) AND dyn_tablecreated = 1

OPEN @crsr
FETCH NEXT FROM @crsr
INTO @dynTab

WHILE @@FETCH_STATUS = 0 AND @@ERROR = 0
    BEGIN
        SET @dynDelete  = 'DELETE FROM ' + @dynTab + ' WHERE id = ' + @id 
        EXEC @dynDelete

        FETCH NEXT FROM @crsr
        INTO @dynTab
    END

            CLOSE @crsr
        DEALLOCATE @crsr 
        IF @@ERROR <> 0
        BEGIN
            ROLLBACK TRAN
            return 0
        END

...

这是错误:

找不到存储过程'DELETE FROM myTable WHERE id = 1111'

Answer 1

EXEC 没有括号尝试调用过程.

尝试 EXEC(@dynDelete)

Answer 2

你需要写
EXEC(@dynDelete)