MySQL 如何从DOB得到年龄

要从DOB中获取年龄，可以使用TIMESTAMPDIFF()函数。以下是语法 –

select TIMESTAMPDIFF(YEAR, yourColumnName, CURRENT_DATE) AS anyAliasName from yourTableName;

让我们首先创建一个表 –

mysql> create table DemoTable
   -> (
   -> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,
   -> DateOfBirth datetime
   -> );
Query OK, 0 rows affected (0.73 sec)

使用插入命令在表中插入一些记录 –

mysql> insert into DemoTable(DateOfBirth) values('1998-06-04 12:30:00');
Query OK, 1 row affected (0.18 sec)

mysql> insert into DemoTable(DateOfBirth) values('2000-01-31 04:10:20');
Query OK, 1 row affected (0.14 sec)

mysql> insert into DemoTable(DateOfBirth) values('2010-12-01 03:50:45');
Query OK, 1 row affected (0.24 sec)

使用选择语句显示表中的所有记录-

mysql> select *from DemoTable;

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输出

+----+---------------------+
| Id | DateOfBirth         |
+----+---------------------+
| 1  | 1998-06-04 12:30:00 |
| 2  | 2000-01-31 04:10:20 |
| 3  | 2010-12-01 03:50:45 |
+----+---------------------+
3 rows in set (0.00 sec)

以下是在MySQL中从DOB获取年龄的查询 –

mysql> select TIMESTAMPDIFF(YEAR, DateOfBirth, CURRENT_DATE) AS YourAge from DemoTable;

输出

+---------+
| YourAge |
+---------+
| 21      |
| 19      |
| 8       |
+---------+
3 rows in set (0.00 sec)