trasaction表描述字段有一些值,它工作正常.
说明feild默认值为NULL,它不起作用..
update transaction set domain='hiox.com',description=CONACT(description,',domain swapped from hioxindia.com to hiox.com') where id=23602
帮我..
最佳答案
使用ifnull():
update `transaction`
set domain='hiox.com',description=CONCAT(ifnull(description,''),domain swapped from hioxindia.com to hiox.com')
where id=23602
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