Syntax error Compare date when the AdmissionDate is less than the current date in MySQL

Compare date when the AdmissionDate is less than the current date in MySQL

Let us first create a table −

mysql> create table DemoTable
(
   AdmissionDate varchar(50)
);
Query OK, 0 rows affected (0.63 sec)

Note − Let’s say the current date is 14-Sep-2019.

Insert some records in the table using insert command. Following is the query −

mysql> insert into DemoTable values('15-Sep-2019');
Query OK, 1 row affected (0.19 sec)
mysql> insert into DemoTable values('14-Sep-2019');
Query OK, 1 row affected (0.10 sec)
mysql> insert into DemoTable values('13-Sep-2016');
Query OK, 1 row affected (0.15 sec)
mysql> insert into DemoTable values('13-Sep-2019');
Query OK, 1 row affected (0.11 sec)
mysql> insert into DemoTable values('13-Sep-2020');
Query OK, 1 row affected (0.10 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable;

This will produce the following output −

+---------------+
| AdmissionDate |
+---------------+
| 15-Sep-2019   |
| 14-Sep-2019   |
| 13-Sep-2016   |
| 13-Sep-2019   |
| 13-Sep-2020   |
+---------------+
5 rows in set (0.00 sec)

Following is the query to compare date when the AdmissionDate is less than the current date −

mysql> select *from DemoTable where str_to_date(AdmissionDate,'%d-%b-%Y') < CURDATE();

This will produce the following output −

+---------------+
| AdmissionDate |
+---------------+
| 13-Sep-2016   |
| 13-Sep-2019   |
+---------------+
2 rows in set (0.00 sec)
Updated on: 2019-10-10T11:41:28+05:30

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