求一条分组求最大值的sql语句 - V2EX

求一条分组求最大值的sql语句 - V2EX

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table中有几亿条数据字段一字段二
字段二group by分组去重
字段一求最大值

2 条回复 1970-01-01 08:00:00 +08:00

1

lookhi

2013-04-18 15:11:23 +08:00

SELECT TABLE2,MAX(TABLE1) FROM TABLE GROUP BY TABLE2

2

lookhi

2013-04-18 15:11:45 +08:00

SELECT FIELD2,MAX(FIELD1) FROM TABLE GROUP BY FIELD2

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