触发器前的 DB2

Question

我有这个触发器：

--#SET TERMINATOR @
CREATE TRIGGER actualizarSaldoIngreso
BEFORE INSERT ON Ingreso
FOR EACH ROW MODE DB2SQL
BEGIN ATOMIC
    UPDATE Cliente SET Nombre = 'Juan' WHERE DNI = '87366034M';
END@
--#SET TERMINATOR ;

但是db2returns出现如下错误：

The trigger "DB2INST1.ACTUALIZARSALDOINGRESO" is defined with an unsupported triggered SQL statement

知道为什么吗？

Answer 1

在CREATE TRIGGER描述中说明：

The SQL-procedure-statement in a BEFORE trigger cannot:

Contain any INSERT, DELETE, or UPDATE operations, nor invoke any routine defined with MODIFIES SQL DATA, if it is not a compound SQL (compiled).

删除 ATOMIC 子句或使用 AFTER INSERT 触发器。