1、order by
select a1,a1 from temp order by a1 此语句在高版本中执行提示a1列名不明确,在低版本中执行成功!
1、order by
select a1,a1 from temp order by a1 此语句在高版本中执行提示a1列名不明确,在低版本中执行成功!
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