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Group month and year in MySQL?
You can group month and year with the help of function DATE_FORMAT() in MySQL. The GROUP BY clause is also used.
The syntax is as follows −
SELECT DATE_FORMAT(yourColumnName, '%m-%Y') from yourTableName GROUP BY MONTH(yourColumnName), YEAR(yourColumnName)DESC;
To understand the above concept, let us create a table. The following is the query to create a table −
mysql> create table GroupMonthAndYearDemo −> ( −> DueDate datetime −> ); Query OK, 0 rows affected (1.49 sec)
Insert records in the table using the following query −
mysql> insert into GroupMonthAndYearDemo values(now()); Query OK, 1 row affected (0.11 sec) mysql> insert into GroupMonthAndYearDemo values(date_add(now(),interval 2 year)); Query OK, 1 row affected (0.12 sec) mysql> insert into GroupMonthAndYearDemo values(date_add(now(),interval -2 year)); Query OK, 1 row affected (0.10 sec) mysql> insert into GroupMonthAndYearDemo values(date_add(now(),interval 1 year)); Query OK, 1 row affected (0.16 sec) mysql> insert into GroupMonthAndYearDemo values(date_add(now(),interval -1 year)); Query OK, 1 row affected (0.14 sec)
Display all records from the table with the help of select statement. The query is as follows −
mysql> select *from GroupMonthAndYearDemo;
The following is the output −
+---------------------+ | DueDate | +---------------------+ | 2018-12-06 13:12:34 | | 2020-12-06 13:12:59 | | 2016-12-06 13:13:08 | | 2019-12-06 13:13:14 | | 2017-12-06 13:13:19 | +---------------------+ 5 rows in set (0.00 sec)
The query to group by month and year is as follows −
mysql> select DATE_FORMAT(DueDate, '%m-%Y') from GroupMonthAndYearDemo −> GROUP BY MONTH(DueDate) , YEAR(DueDate)DESC;
The following is the output displaying month and year grouped by using GROUP BY −
+-------------------------------+ | DATE_FORMAT(DueDate, '%m-%Y') | +-------------------------------+ | 12-2020 | | 12-2019 | | 12-2018 | | 12-2017 | | 12-2016 | +-------------------------------+ 5 rows in set, 2 warnings (0.00 sec)
Updated on: 30-Jul-2019
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