根据特定月份从 MySQL 表中选择数据?
mysqlmysqli database更新于 2025/5/27 6:04:17
使用 MySQL 中的 MONTH() 方法根据月份选择日期。让我们首先创建一个表 −
mysql> create table DemoTable -> ( -> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> UserName varchar(10), -> UserPostMessageDate datetime, -> UserLikes int -> ); Query OK, 0 rows affected (0.77 sec)
使用 insert 命令在表中插入一些记录 −
mysql> insert into DemoTable(UserName,UserPostMessageDate,UserLikes)
values('John','2019-01-31',4560);
Query OK, 1 row affected (0.17 sec)
mysql> insert into DemoTable(UserName,UserPostMessageDate,UserLikes)
values('Sam','2019-06-28',790);
Query OK, 1 row affected (0.27 sec)
mysql> insert into DemoTable(UserName,UserPostMessageDate,UserLikes)
values('Carol','2019-05-01',230);
Query OK, 1 row affected (0.18 sec)
mysql> insert into DemoTable(UserName,UserPostMessageDate,UserLikes)
values('David','2019-03-05',10000000);
Query OK, 1 row affected (0.33 sec)
使用 select 语句显示表中的所有记录 −
mysql> select *from DemoTable;
输出
这将产生以下输出 −
+----+----------+---------------------+-----------+ | Id | UserName | UserPostMessageDate | UserLikes | +----+----------+---------------------+-----------+ | 1 | John | 2019-01-31 00:00:00 | 4560 | | 2 | Sam | 2019-06-28 00:00:00 | 790 | | 3 | Carol | 2019-05-01 00:00:00 | 230 | | 4 | David | 2019-03-05 00:00:00 | 10000000 | +----+----------+---------------------+-----------+ 4 rows in set (0.00 sec)
以下是根据特定月份从表中选择数据的查询 −
mysql> select Id,UserName,UserLikes from DemoTable where MONTH(UserPostMessageDate)=6;
输出
这将产生以下输出 −
+----+----------+-----------+ | Id | UserName | UserLikes | +----+----------+-----------+ | 2 | Sam | 790 | +----+----------+-----------+ 1 row in set (0.00 sec)
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