To extract only the day instead of the entire date, you need to use DAYOFMONTH() function from MySQL.
Let us first create a table −
mysql> create table DemoTable747 (DueDate datetime); Query OK, 0 rows affected (0.53 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable747 values('2019-01-31') ; Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable747 values('2018-12-01'); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable747 values('2017-09-14'); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable747 values('2016-07-21'); Query OK, 1 row affected (0.14 sec)
Display all records from the table using select statement −
mysql> select *from DemoTable747;
This will produce the following output -
+---------------------+ | DueDate | +---------------------+ | 2019-01-31 00:00:00 | | 2018-12-01 00:00:00 | | 2017-09-14 00:00:00 | | 2016-07-21 00:00:00 | +---------------------+ 4 rows in set (0.00 sec)
Following is the query to extract only the day instead of entire date −
mysql> select dayofmonth(DueDate) from DemoTable747;
This will produce the following output -
+---------------------+ | dayofmonth(DueDate) | +---------------------+ | 31 | | 1 | | 14 | | 21 | +---------------------+ 4 rows in set (0.00 sec)