insert into aa (id,name) values((select case when max(id) is null then 1 else max(id)+1 end from aa),'a');
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insert into aa (id,name) values((select case when max(id) is null then 1 else max(id)+1 end from aa),'a');
转载于:https://www.cnblogs.com/klj123wan/p/3534181.html