Condition to check for due date and current date records in MySQL where clause
To check for such conditions, use IF() in MySQL.
Let us create a table −
Example
mysql> create table demo89
-> (
-> duedate date
-> );
Query OK, 0 rows affected (0.78
Insert some records into the table with the help of insert command −
Example
mysql> insert into demo89 values('2020-01-10');
Query OK, 1 row affected (0.55
mysql> insert into demo89 values(null);
Query OK, 1 row affected (0.13
mysql> insert into demo89 values('2020-11-29');
Query OK, 1 row affected (0.15
mysql> insert into demo89 values('2019-11-29');
Query OK, 1 row affected (0.09Display records from the table using select statement −
Example
mysql> select *from demo89;
This will produce the following output −
Output
+------------+
| duedate |
+------------+
| 2020-01-10 |
| NULL |
| 2020-11-29 |
| 2019-11-29 |
+------------+
4 rows in set (0.00 sec)
Following is the query to check for due date and current date records −
Example
mysql> select if (duedate is null
-> or duedate < curdate(),'Wrong Date',duedate) as Result
-> from demo89;
This will produce the following output −
Output
+------------+
| Result |
+------------+
| Wrong Date |
| Wrong Date |
| 2020-11-29 |
| Wrong Date |
+------------+
4 rows in set (0.00 sec)
Published on 11-Dec-2020 05:57:30
