Convert a string to lowercase. This function returns the string with all characters converted to lowercase.
LOWER(str)
LCASE(str)Returns the string str with all characters changed to lowercase according to the current character set mapping. The default is latin1 (cp1252 West European).
LCASE is a synonym for LOWER .
LOWER() (and ()) are ineffective when applied to binary strings (, , ).
To perform letter case conversion, the string to a non-binary string:
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SELECT LOWER('QUADRATICALLY');
+------------------------+
| LOWER('QUADRATICALLY') |
+------------------------+
| quadratically |
+------------------------+SET @str = BINARY 'North Carolina';
SELECT LOWER(@str), LOWER(CONVERT(@str USING latin1));
+----------------+-----------------------------------+
| LOWER(@str) | LOWER(CONVERT(@str USING latin1)) |
+----------------+-----------------------------------+
| North Carolina | north carolina |
+----------------+-----------------------------------+