MySQL 如何使用MySQL按月份选择

使用MONTH（）函数按月份进行选择。首先创建一个表格-

mysql> create table DemoTable1599
   -> (
   -> Shippingdate datetime
   -> );
Query OK, 0 rows affected (0.78 sec)

使用插入命令将一些记录插入表格中-

mysql> insert into DemoTable1599 values('2019-10-21');
Query OK, 1 row affected (0.28 sec)
mysql> insert into DemoTable1599 values('2018-12-12');
Query OK, 1 row affected (0.35 sec)
mysql> insert into DemoTable1599 values('2015-11-21');
Query OK, 1 row affected (0.34 sec)
mysql> insert into DemoTable1599 values('2017-12-31');
Query OK, 1 row affected (0.20 sec)
mysql> insert into DemoTable1599 values('2018-12-26');
Query OK, 1 row affected (0.17 sec)

使用选择语句显示表中的所有记录-

mysql> select * from DemoTable1599;

这将产生以下输出-

+---------------------+
| Shippingdate        |
+---------------------+
| 2019-10-21 00:00:00 |
| 2018-12-12 00:00:00 |
| 2015-11-21 00:00:00 |
| 2017-12-31 00:00:00 |
| 2018-12-26 00:00:00 |
+---------------------+
5 rows in set (0.00 sec)

以下是按月份选择的查询语句-

mysql> select * from DemoTable1599
   -> where month(Shippingdate)=12;

这将产生以下输出-

+---------------------+
| Shippingdate        |
+---------------------+
| 2018-12-12 00:00:00 |
| 2017-12-31 00:00:00 |
| 2018-12-26 00:00:00 |
+---------------------+
3 rows in set (0.00 sec)

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