Perform MySQL SELECT on dates inserted into the table as VARCHAR values

Let us first create a table −

mysql> create table DemoTable
(
   DueDate varchar(100)
);
Query OK, 0 rows affected (0.50 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable values('21/10/2018');
Query OK, 1 row affected (0.22 sec)
mysql> insert into DemoTable values('18/08/2019');
Query OK, 1 row affected (0.10 sec)
mysql> insert into DemoTable values('01/12/2012');
Query OK, 1 row affected (0.18 sec)
mysql> insert into DemoTable values('31/01/2016');
Query OK, 1 row affected (0.19 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable;

This will produce the following output −

+------------+
| DueDate    |
+------------+
| 21/10/2018 |
| 18/08/2019 |
| 01/12/2012 |
| 31/01/2016 |
+------------+
4 rows in set (0.00 sec)

Following is the query to perform SELECT on dates included in the above table as VARCHAR. Here, we are fetching all the date records after the date 2010-01-31 −

mysql> select *from DemoTable where str_to_date(DueDate,'%d/%m/%Y') > '2010-01-31';

This will produce the following output −

+------------+
| DueDate    |
+------------+
| 21/10/2018 |
| 18/08/2019 |
| 01/12/2012 |
| 31/01/2016 |
+------------+
4 rows in set (0.00 sec)

AmitDiwan

Published on 26-Sep-2019 07:48:16