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摘要: SELECT CASE WHEN salary <= 500 THEN '1' WHEN salary > 500 AND salary <= 600 THEN '2' WHEN salary > 600 AND salary <= 800 THEN '3' WHEN salary > 800 AN 阅读全文
posted @ 2016-04-07 22:56 大喜 阅读(520) 评论(0) 推荐(0)
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