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MySql根据生日计算年龄
source link: https://www.bugcatt.com/archives/2545
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这次的需求是需要通过出生日期（年月日）来计算年龄。一句SQL就可以搞定:
SELECT TIMESTAMPDIFF(YEAR, '2000-01-01', CURDATE());如果格式是 年-月-日 ，那就使用CONCAT拼接起来，这么写：
SELECT TIMESTAMPDIFF(YEAR, CONCAT(2000, '-', 1, '-', 1), CURDATE());如果你遇到了更好的解法，欢迎在下方留言哟！
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