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LOWER

Sintassi

LOWER(str)

Spiegazione

Restituisce la stringa str con tutti i caratteri minuscoli, secondo la mappatura del set di caratteri corrente. Quello predefinito è latin1 (cp1252 West European).

mysql> SELECT LOWER('QUADRATICALLY');
        -> 'quadratically'

LOWER() (e UPPER()) non fa nulla quando viene usato con stringhe binarie (BINARY, VARBINARY e BLOB). Per sostituire le lettere maiuscole con le minuscole, occorre convertire la stringa binaria in una non binaria:

MariaDB [(none)]> SET @str = BINARY 'North Carolina';
Query OK, 0 rows affected (0.00 sec)

MariaDB [(none)]> SELECT LOWER(@str), LOWER(CONVERT(@str USING latin1));
+----------------+-----------------------------------+
| LOWER(@str)    | LOWER(CONVERT(@str USING latin1)) |
+----------------+-----------------------------------+
| North Carolina | north carolina                    |
+----------------+-----------------------------------+
1 row in set (0.00 sec)
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