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mysql查询优化,谁能帮我优化查询啊?我这个太慢了,慢死了

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2016-06-06 09:34:14998瀏覽

mysql优化sql

SELECT mobileuserid,caozuoleixing,caozuozhi,xiguanzhi FROM 表A WHERE xiguanzhi>2
GROUP BY mobileuserid,caozuoleixing,caozuozhi,xiguanzhi
ORDER BY mobileuserid,caozuoleixing,xiguanzhi DESC LIMIT 3000

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