6条回答
- 战在春秋 2017-07-03 08:37关注
看似简单,还真不太好解决,想了半天,可以这样(测试已通过):
SELECT tb1.key,tb1.value,tb1.test FROM tb1 inner JOIN ( Select key,Max(value) as newvalue FROM tb1 GROUP BY key )T On T.key = tb1.key AND T.newvalue = tb1.value;
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