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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 09:34:14999browse
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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