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What MySQL functions can we use to change the character case of a string?
We can use LCASE() and LOWER() functions for changing the character case of a string to lower case and UCASE() and UPPER() functions for changing the character case of a string to upper case.
Example
mysql> Select LCASE('NEW DELHI');
+--------------------+
| LCASE('NEW DELHI') |
+--------------------+
| new delhi |
+--------------------+
1 row in set (0.00 sec)
mysql> Select LOWER('NEW DELHI');
+--------------------+
| LOWER('NEW DELHI') |
+--------------------+
| new delhi |
+--------------------+
1 row in set (0.00 sec)
mysql> Select UCASE('new delhi');
+--------------------+
| UCASE('new delhi') |
+--------------------+
| NEW DELHI |
+--------------------+
1 row in set (0.00 sec)
mysql> Select UPPER('new delhi');
+--------------------+
| UPPER('new delhi') |
+--------------------+
| NEW DELHI |
+--------------------+
1 row in set (0.00 sec)We can also use these functions with the columns of a table. For example, suppose we want to change the character case of the values in a column in the output then following query on table ‘Student’ can demonstrate it −
mysql> Select Name, UCASE(Name) from student; +---------+-------------+ | Name | UCASE(Name) | +---------+-------------+ | Gaurav | GAURAV | | Aarav | AARAV | | Harshit | HARSHIT | | Gaurav | GAURAV | | Yashraj | YASHRAJ | +---------+-------------+ 5 rows in set (0.00 sec) mysql> Select Name, LCASE(Name) from student; +---------+-------------+ | Name | LCASE(Name) | +---------+-------------+ | Gaurav | gaurav | | Aarav | aarav | | Harshit | harshit | | Gaurav | gaurav | | Yashraj | yashraj | +---------+-------------+ 5 rows in set (0.00 sec) mysql> Select Name, UPPER(Name) from student; +---------+-------------+ | Name | UPPER(Name) | +---------+-------------+ | Gaurav | GAURAV | | Aarav | AARAV | | Harshit | HARSHIT | | Gaurav | GAURAV | | Yashraj | YASHRAJ | +---------+-------------+ 5 rows in set (0.00 sec) mysql> Select Name, LOWER(Name) from student; +---------+-------------+ | Name | LOWER(Name) | +---------+-------------+ | Gaurav | gaurav | | Aarav | aarav | | Harshit | harshit | | Gaurav | gaurav | | Yashraj | yashraj | +---------+-------------+ 5 rows in set (0.00 sec)
Updated on: 04-Feb-2020
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