无中生有只能造记录 select * from( select @i:=@i+1 as id from information_schema.columns a, information_schema.columns b, (select @i:=0) c limit 16 ) x where id not in (select 值字段 from 你的表);
select * from( select @i:=@i+1 as id from information_schema.columns a, information_schema.columns b, (select @i:=0) c limit 16 ) x where id not in (select 值字段 from 你的表);
select ( from 表 where 字段 <> 15
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