mysql触发器语法错误_mysql触发器语法错误问题

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我是靠谱客的博主爱笑马里奥，这篇文章主要介绍mysql触发器语法错误_mysql触发器语法错误问题，现在分享给大家，希望可以做个参考。

CREATE TRIGGER tradecost

AFTER UPDATE ON fentrust

FOR EACH ROW

BEGIN

DECLARE old_account DECIMAL(16,6)

DECLARE old_fid INT(10)

DECLARE trade_account DECIMAL(16,6)

SET old_fid = SELECT old_fid FROM fentrust WHERE old.fEntrustType = 1 AND old.fstatus = 1 AND new.fstatus IN(2,3)

SET trade_account = (SELECT fsuccessamount FROM fentrust WHERE old.fEntrustType = 1 AND old.fstatus = 1 AND new.fstatus IN(2,3))

SET old_account = (SELECT ftotalrmb FROM fwallet WHERE fid = old_fid)

UPDATE fwallet SET ftotalRMB = (old_account-trade_account*0.005)

END

上面的语法有问题总报错求助应该怎么写谢谢

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