查找MySQL中最低的日期（自定义）？
为了找到MySQL中最低的Date(custom)，让我们首先创建一个表。创建表的查询如下：
mysql> create table FindMinimumDate -> ( -> Id int NOT NULL AUTO_INCREMENT, -> yourDay varchar(2), -> yourMonth varchar(2), -> yourYear varchar(4), -> PRIMARY KEY(Id) -> );
使用insert命令在表中插入一些记录。查询如下：
mysql> insert into FindMinimumDate(yourDay,yourMonth,yourYear) values('21','11','2019');
mysql> insert into FindMinimumDate(yourDay,yourMonth,yourYear) values('20','10','2020');
mysql> insert into FindMinimumDate(yourDay,yourMonth,yourYear) values('03','08','2014');
mysql> insert into FindMinimumDate(yourDay,yourMonth,yourYear) values('04','09','2017');
mysql> insert into FindMinimumDate(yourDay,yourMonth,yourYear) values('05','07','2013');
mysql> insert into FindMinimumDate(yourDay,yourMonth,yourYear) values('25','12','2016');使用select语句显示表中的所有记录。查询如下：
mysql> select *from FindMinimumDate;
以下是输出：
+----+---------+-----------+----------+ | Id | yourDay | yourMonth | yourYear | +----+---------+-----------+----------+ | 1 | 21 | 11 | 2019 | | 2 | 20 | 10 | 2020 | | 3 | 03 | 08 | 2014 | | 4 | 04 | 09 | 2017 | | 5 | 05 | 07 | 2013 | | 6 | 25 | 12 | 2016 | +----+---------+-----------+----------+ 6 rows in set (0.00 sec)
现在让我们找到MySQL中最低的Date(Custom)。查询如下：
mysql> select min(concat(yourYear,'-',yourMonth,'-',yourDay)) as MinimumDate from FindMinimumDate;
以下是显示最低日期的输出：
+-------------+ | MinimumDate | +-------------+ | 2013-07-05 | +-------------+ 1 row in set (0.00 sec)