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MySQL to perform DateTime comparison and find the difference between dates in different columns
For this, use DATEDIFF() function. Let us first create a table −
mysql> create table DemoTable(DOB datetime,CurrentDate datetime); Query OK, 0 rows affected (0.59 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable values('1995-01-21',CURDATE());
Query OK, 1 row affected (0.18 sec)
mysql> insert into DemoTable values('1998-11-01',CURDATE());
Query OK, 1 row affected (0.39 sec)
mysql> insert into DemoTable values('2000-10-24',CURDATE());
Query OK, 1 row affected (0.22 sec)Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+---------------------+---------------------+ | DOB | CurrentDate | +---------------------+---------------------+ | 1995-01-21 00:00:00 | 2019-07-08 00:00:00 | | 1998-11-01 00:00:00 | 2019-07-08 00:00:00 | | 2000-10-24 00:00:00 | 2019-07-08 00:00:00 | +---------------------+---------------------+ 3 rows in set (0.00 sec)
Following is the query for datetime comparison −
mysql> select *from DemoTable where (datediff(CurrentDate,DOB) / 365) > 23;
This will produce the following output −
+---------------------+---------------------+ | DOB | CurrentDate | +---------------------+---------------------+ | 1995-01-21 00:00:00 | 2019-07-08 00:00:00 | +---------------------+---------------------+ 1 row in set (0.00 sec)
Updated on: 22-Aug-2019
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