Mysql查询SQL相关总结（根据生日以及身份证查询年龄以及性别区域等）

1.根据生日查询年龄

SELECT YEAR(CURDATE())-YEAR(birthDate)-(RIGHT(CURDATE(),5)<RIGHT(birthDate,5)) FROM 表名 a WHERE a.`uid` IN(159486);

与上面的结果相等sql：

SELECT TIMESTAMPDIFF(YEAR,a.birthDate,CURDATE()) FROM 表名 a WHERE a.`uid` IN(159486);

SELECT TIMESTAMPDIFF(YEAR,a.birthDate,NOW()) FROM 表名 a WHERE a.`uid` IN(159486);

2.根据身份证查询年龄（只精确到年，会出现满与不满的问题）

SELECT
YEAR(CURDATE()) - IF(
LENGTH(custId) = 18,
SUBSTRING(custId, 7, 4),
IF(
LENGTH(custId) = 15,
CONCAT('19', SUBSTRING(custId, 7, 2)),
NULL
)
) AS 年龄
FROM
表名 a WHERE a.`uid` IN(159486);

3.根据身份证号码查询性别

SELECT
CASE IF(LENGTH(custId)=18, CAST(SUBSTRING(custId,17,1) AS UNSIGNED)%2, IF(LENGTH(custId)=15,CAST(SUBSTRING(custId,15,1) AS UNSIGNED)%2,3))
WHEN 1 THEN '男'
WHEN 0 THEN '女'
ELSE '未知'  #此列可以忽略
END AS 性别
FROM
表名 a ;

4.根据身份证查询地址

SELECT
CASE LEFT(custId,2)
WHEN '11' THEN '北京市'
WHEN '12' THEN '天津市'
WHEN '13' THEN '河北省'
WHEN '14' THEN '山西省'
WHEN '15' THEN '内蒙古自治区'
WHEN '21' THEN '辽宁省'
WHEN '22' THEN '吉林省'
WHEN '23' THEN '黑龙江省'
WHEN '31' THEN '上海市'
WHEN '32' THEN '江苏省'
WHEN '33' THEN '浙江省'
WHEN '34' THEN '安徽省'
WHEN '35' THEN '福建省'
WHEN '36' THEN '江西省'
WHEN '37' THEN '山东省'
WHEN '41' THEN '河南省'
WHEN '42' THEN '湖北省'
WHEN '43' THEN '湖南省'
WHEN '44' THEN '广东省'
WHEN '45' THEN '广西壮族自治区'
WHEN '46' THEN '海南省'
WHEN '50' THEN '重庆市'
WHEN '51' THEN '四川省'
WHEN '52' THEN '贵州省'
WHEN '53' THEN '云南省'
WHEN '54' THEN '西藏自治区'
WHEN '61' THEN '陕西省'
WHEN '62' THEN '甘肃省'
WHEN '63' THEN '青海省'
WHEN '64' THEN '宁夏回族自治区'
WHEN '65' THEN '新疆维吾尔自治区'
WHEN '71' THEN '台湾省'
WHEN '81' THEN '香港特别行政区'
WHEN '82' THEN '澳门特别行政区'
ELSE '未知'
END AS 省份
FROM 表名;