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How to use the CAST function in a MySQL SELECT statement?
The CAST() function in MySQL converts a value of any type into a value that has a specified type. Let us first create a table −
mysql> create table castFunctionDemo -> ( -> ShippingDate date -> ); Query OK, 0 rows affected (0.74 sec)
Following is the query to insert some records in the table using insert command −
mysql> insert into castFunctionDemo values('2019-01-31');
Query OK, 1 row affected (0.20 sec)
mysql> insert into castFunctionDemo values('2018-07-12');
Query OK, 1 row affected (0.16 sec)
mysql> insert into castFunctionDemo values('2016-12-06');
Query OK, 1 row affected (0.16 sec)
mysql> insert into castFunctionDemo values('2017-08-25');
Query OK, 1 row affected (0.19 sec)Following is the query to display all records from the table using select statement −
mysql> select * from castFunctionDemo;
This will produce the following output −
+--------------+ | ShippingDate | +--------------+ | 2019-01-31 | | 2018-07-12 | | 2016-12-06 | | 2017-08-25 | +--------------+ 4 rows in set (0.00 sec)
Here is the query to use the cast() function correctly in a MySQL select statement −
mysql> select CAST(ShippingDate AS CHAR(12)) as Conversion FROM castFunctionDemo;
This will produce the following output −
+------------+ | Conversion | +------------+ | 2019-01-31 | | 2018-07-12 | | 2016-12-06 | | 2017-08-25 | +------------+ 4 rows in set (0.00 sec)
Updated on: 30-Jul-2019
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