sql server出生年月减去退休年月 计算年龄

--在 SQL Server 2005 中测试通过

--@IDNUMSTR 表示***号

DECLARE @IDNUMSTR CHAR(18);

SELECT @IDNUMSTR = '410305196601071522';

--如果是18位号码

IF LEN(LTRIM(RTRIM(@IDNUMSTR))) = 18

SELECT DATEDIFF(YEAR,CAST(SUBSTRING(@IDNUMSTR, 7, 8) AS DATETIME),GETDATE());

--如果是15位号码

ELSE

SELECT DATEDIFF(YEAR,CAST(SUBSTRING(@IDNUMSTR, 7, 6) AS DATETIME),GETDATE());



SELECT DATEDIFF(year, SUBSTRING(user_sfzh, 7, 8), GETDATE()) AS table1

FROM user_info