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sql过滤重复数据 用SQL语句怎么过滤重复数据
sql过滤重复数据 select distinct b.id,b.names,b.series,b.prize from(select names,series,max(prize)as prize from tb2 group by na...
sql过滤重复数据 select distinct b.id,b.names,b.series,b.prize from(select names,series,max(prize)as prize from tb2 group by na...