ROW_NUM
SELECT * FROM
(
(SELECT ROW_NUMBER() OVER (PARTITION BY 字段1,字段2 ORDER BY 字段3 DESC) AS TMPID), *
FROM 表名
)
WHERE TMPID=1
SELECT * FROM
(
(SELECT ROW_NUMBER() OVER (PARTITION BY 字段1,字段2 ORDER BY 字段3 DESC) AS TMPID), *
FROM 表名
)
WHERE TMPID=1
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