Comparison of varchar date records from the current date in MySQL

For date comparison, you can use STR_TO_DATE(). Following is the syntax −

select * from yourTableName
where str_to_date(yourColumnName,'yourFormatSpecifier') > curdate();

Let us first create a −

mysql> create table DemoTable1397
   -> (
   -> AdmissionDate varchar(40)
   -> );s
Query OK, 0 rows affected (0.97 sec)

Insert some records in the table using insert −

mysql> insert into DemoTable1397 values('01/04/2019');
Query OK, 1 row affected (0.11 sec)
mysql> insert into DemoTable1397 values('27/09/2019');
Query OK, 1 row affected (0.13 sec)
mysql> insert into DemoTable1397 values('29/09/2018');
Query OK, 1 row affected (0.12 sec)
mysql> insert into DemoTable1397 values('29/09/2019');
Query OK, 1 row affected (0.08 sec)

Display all records from the table using select −

mysql> select * from DemoTable1397;

This will produce the following output −

+---------------+
| AdmissionDate |
+---------------+
| 01/04/2019    |
| 27/09/2019    |
| 29/09/2018    |
| 29/09/2019    |
+---------------+
4 rows in set (0.00 sec)

Let us first find the current date −

mysql> select curdate();
+------------+
| curdate()  |
+------------+
| 2019-09-27 |
+------------+
1 row in set (0.00 sec)

Following is the query to compare varchar date with the current date in MySQL −

mysql> select * from DemoTable1397
   -> where str_to_date(AdmissionDate,'%d/%m/%Y') > curdate();

This will produce the following output −

+---------------+
| AdmissionDate |
+---------------+
| 29/09/2019    |
+---------------+
1 row in set (0.07 sec)

AmitDiwan

Published on 11-Nov-2019 10:39:44

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