Question

CREATE TRIGGER printMoneyUSA
    AFTER UPDATE ON USA
    REFERENCING
        OLD ROW AS old
        NEW ROW AS new

    FOR EACH ROW
BEGIN
    IF old.SUPPLY_OF_CURRENCY = 0 THEN
        SET new.SUPPLY_OF_CURRENCY = 30000000000;
    END IF;
END;//

您好，我继续收到“＃REFERENCING＆＃39;”的语法错误。语法说：

您的SQL语法有错误;查看与MariaDB服务器版本对应的手册，以便在
附近使用正确的语法
'REFERENCING
    OLD ROW AS old
    NEW ROW AS new

 FOR EACH ROW BEGI' at line 3.

有人可以指出我做错了什么吗？谢谢！

Answer 1

基于mariadb在create trigger上的文档，mariadb没有引用条款：

CREATE [OR REPLACE]
    [DEFINER = { user | CURRENT_USER | role | CURRENT_ROLE }]
    TRIGGER [IF NOT EXISTS] trigger_name trigger_time trigger_event
    ON tbl_name FOR EACH ROW
   [{ FOLLOWS | PRECEDES } other_trigger_name ]
   trigger_stmt

您必须删除引用子句，只需使用OLD / NEW来引用记录的版本。

Answer 2

MariaDB和MySQL没有REFERENCING条款。 OLD会自动引用＆＃34; old＆＃34;行。同样适用于NEW。

引用mariadb语法时出错

2 个答案: