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比如前端传一个为 name 的参数,如果为空,则查询全部,不为空则查询所有
Model.findAll({ where: { name: query.name } })
我该如何判断这里query.name如果为空,就不要有name这个条件? 试过三目运算符置为 undefined,可是出来的查询条件是 where name=null
query.name
undefined
where name=null
还是说我只能把where拎出来,用if-else判断来加入条件,再做查询呢