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MySQL query to delete a DATE older than 30 days from another date?
Following is the syntax −
delete from yourTableName where yourColumnName < (yourAnotherDateValue - INTERVAL 30 DAY);
Let us first create a table −
mysql> create table DemoTable ( DueDate date ); Query OK, 0 rows affected (0.68 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable values('2019-08-25');
Query OK, 1 row affected (0.20 sec)
mysql> insert into DemoTable values('2019-07-01');
Query OK, 1 row affected (0.16 sec)
mysql> insert into DemoTable values('2019-06-20');
Query OK, 1 row affected (0.10 sec)
mysql> insert into DemoTable values('2019-09-02');
Query OK, 1 row affected (0.14 sec)Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+------------+ | DueDate | +------------+ | 2019-08-25 | | 2019-07-01 | | 2019-06-20 | | 2019-09-02 | +------------+ 4 rows in set (0.00 sec)
Following is the query to delete a DATE that is older than 30 days from another date −
mysql> delete from DemoTable where DueDate < ('2019-08-31' - INTERVAL 30 DAY);
Query OK, 2 rows affected (0.22 sec)Let us check the table records once again −
mysql> select *from DemoTable;
This will produce the following output −
+------------+ | DueDate | +------------+ | 2019-08-25 | | 2019-09-02 | +------------+ 2 rows in set (0.00 sec)
Updated on: 01-Oct-2019
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