mysql从身份证号中提取生日、性别

 SELECT
     p.ID,
     p.IDCardNo,
 IF (
     LENGTH(p.IDCardNo) = 18,
     CAST(
         SUBSTRING(p.IDCardNo, 7, 8) AS DATETIME
     ),
     CAST(
         CONCAT(
             '',
             SUBSTRING(p.IDCardNo, 7, 6)
         ) AS DATETIME
     )
 ) AS Birthday,
 IF (
     SUBSTR(
         p.IDCardNo,
         LENGTH(p.IDCardNo) - 1,
         1
     ) % 2 = 1,
     '男',
         '女'
 ) AS sex
 FROM
     users p
 WHERE
     p.IsDelete = 2
 AND p.IDCardNo REGEXP '[1-8][0-8][0-9]{16}|[1-8][0-8][0-9]{15}X|[1-8][0-8][0-9]{13}'
 AND (
     length(p.IDCardNo) = 18
     OR LENGTH(p.idcardno) = 15
 )

ps: 此处身份证号正确性未做非常严谨的验证