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MySQL query to delete all rows older than 30 days?
To delete all rows older than 30 days, you need to use the DELETE with INTERVAL. Use < now() i.e. less than operator to get all the records before the current date.
Let us first create a table −
mysql> create table DemoTable -> ( -> UserMessage text, -> UserMessageSentDate date -> ); Query OK, 0 rows affected (0.59 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable values('Hi','2019-06-01');
Query OK, 1 row affected (0.11 sec)
mysql> insert into DemoTable values('Hello','2019-07-02');
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable values('Awesome','2019-05-04');
Query OK, 1 row affected (0.15 sec)
mysql> insert into DemoTable values('Good','2019-01-10');
Query OK, 1 row affected (0.35 sec)Display all records from the table using select statement −
mysql> select *from DemoTable;
Output
+-------------+---------------------+ | UserMessage | UserMessageSentDate | +-------------+---------------------+ | Hi | 2019-06-01 | | Hello | 2019-07-02 | | Awesome | 2019-05-04 | | Good | 2019-01-10 | +-------------+---------------------+ 4 rows in set (0.00 sec)
Following is the query to delete all rows older than 30 days −
mysql> delete from DemoTable where UserMessageSentDate < now() - interval 30 DAY; Query OK, 3 rows affected (0.11 sec)
Let us check table records once again −
mysql> select *from DemoTable;
Output
+-------------+---------------------+ | UserMessage | UserMessageSentDate | +-------------+---------------------+ | Hello | 2019-07-02 | +-------------+---------------------+ 1 row in set (0.00 sec)
Updated on: 30-Jul-2019
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