MySQL 日期格式 DD/MM/YYYY 选择查询?
mysqlmysqli database
使用 select 和 order by 按降序格式化日期 DD/MM/YYYY。语法如下 −
SELECT *FROM yourTableName where yourDatetimeColumnName order by STR_TO_DATE(yourDatetimeColumnName,’%d/%m%Y’) desc;
上述语法将按降序排列日期。要理解上述语法，让我们首先创建一个表。创建表的查询如下 −
mysql> create table DateFormatWithSelect -> ( -> UserId int, -> UserName varchar(100), -> UserLoginDatetime varchar(100) -> ); Query OK, 0 rows affected (0.58 sec)
使用 insert 命令在表中插入一些记录。 查询语句如下 −
mysql> insert into DateFormatWithSelect values(101,'John','20/10/2016'); Query OK, 1 row affected (0.11 sec) mysql> insert into DateFormatWithSelect values(102,'David','21/09/2015'); Query OK, 1 row affected (0.20 sec) mysql> insert into DateFormatWithSelect values(103,'Carol','21/12/2018'); Query OK, 1 row affected (0.10 sec) mysql> insert into DateFormatWithSelect values(104,'Mike','2/8/2014'); Query OK, 1 row affected (0.16 sec) mysql> insert into DateFormatWithSelect values(105,'Sam','21/11/2017'); Query OK, 1 row affected (0.12 sec) mysql> insert into DateFormatWithSelect values(106,'Bob','21/12/2013'); Query OK, 1 row affected (0.18 sec)
使用 select 命令显示表中的所有记录。查询如下 −
mysql> select *from DateFormatWithSelect;
The following is the outpu −
+--------+----------+-------------------+ | UserId | UserName | UserLoginDatetime | +--------+----------+-------------------+ | 101 | John | 20/10/2016 | | 102 | David | 21/09/2015 | | 103 | Carol | 21/12/2018 | | 104 | Mike | 2/8/2014 | | 105 | Sam | 21/11/2017 | | 106 | Bob | 21/12/2013 | +--------+----------+-------------------+ 6 rows in set (0.00 sec)
以下是将日期格式化为 DD/MM/YYYY 格式的 SELECT −
mysql> select *from DateFormatWithSelect -> where UserLoginDatetime order by str_to_date(UserLoginDatetime,'%d/%m/%Y') desc;
输出
+--------+----------+-------------------+ | UserId | UserName | UserLoginDatetime | +--------+----------+-------------------+ | 103 | Carol | 21/12/2018 | | 105 | Sam | 21/11/2017 | | 101 | John | 20/10/2016 | | 102 | David | 21/09/2015 | | 104 | Mike | 2/8/2014 | | 106 | Bob | 21/12/2013 | +--------+----------+-------------------+ 6 rows in set, 6 warnings (0.00 sec)
