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Add DATE and TIME fields to get DATETIME field in MySQL?
You can use CONCAT() function to set date and time fields to get DATETIME field.
Let us create a demo table
mysql> create table getDateTimeFieldsDemo -> ( -> ShippingDate date, -> ShippingTime time, -> Shippingdatetime datetime -> ); Query OK, 0 rows affected (0.50 sec)
Insert some records in the table using insert command. The query is as follows −
mysql> insert into getDateTimeFieldsDemo(ShippingDate,ShippingTime) values('2018-01-21','09:45:34');
Query OK, 1 row affected (0.16 sec)
mysql> insert into getDateTimeFieldsDemo(ShippingDate,ShippingTime) values('2013-07-26','13:21:20');
Query OK, 1 row affected (0.13 sec)
mysql> insert into getDateTimeFieldsDemo(ShippingDate,ShippingTime) values('2017-12-31','15:31:40');
Query OK, 1 row affected (0.17 sec)
mysql> insert into getDateTimeFieldsDemo(ShippingDate,ShippingTime) values('2019-03-07','12:13:34');
Query OK, 1 row affected (0.41 sec)Display all records from the table using select statement. The query is as follows −
mysql> select *from getDateTimeFieldsDemo;
The following is the output
+--------------+--------------+------------------+ | ShippingDate | ShippingTime | Shippingdatetime | +--------------+--------------+------------------+ | 2018-01-21 | 09:45:34 | NULL | | 2013-07-26 | 13:21:20 | NULL | | 2017-12-31 | 15:31:40 | NULL | | 2019-03-07 | 12:13:34 | NULL | +--------------+--------------+------------------+ 4 rows in set (0.00 sec)
Here is the query to add DATE and TIME fields to get DATETIME field in MySQL
mysql> update getDateTimeFieldsDemo set Shippingdatetime=concat(ShippingDate," ",ShippingTime); Query OK, 4 rows affected (0.09 sec) Rows matched: 4 Changed: 4 Warnings: 0
Now check table records once again. The query is as follows −
mysql> select *from getDateTimeFieldsDemo;
The following is the output
+--------------+--------------+---------------------+ | ShippingDate | ShippingTime | Shippingdatetime | +--------------+--------------+---------------------+ | 2018-01-21 | 09:45:34 | 2018-01-21 09:45:34 | | 2013-07-26 | 13:21:20 | 2013-07-26 13:21:20 | | 2017-12-31 | 15:31:40 | 2017-12-31 15:31:40 | | 2019-03-07 | 12:13:34 | 2019-03-07 12:13:34 | +--------------+--------------+---------------------+ 4 rows in set (0.00 sec)
Updated on: 30-Jul-2019
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