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LENGTH

Sintassi

LENGTH(str)

Spiegazione

Restituisce la lunghezza della stringa str, misurata in byte. Per i caratteri multi-byte, vengono contati i byte piuttosto che i caratteri. Questo significa che per una stringa contenente cinque caratteri di un byte, LENGTH() restituisce 10, mentre CHAR_LENGTH() restituisce 5.

Esempi

MariaDB [test]> SELECT LENGTH('MariaDB');
+-------------------+
| LENGTH('MariaDB') |
+-------------------+
|                 7 |
+-------------------+
1 row in set (0.00 sec)

MariaDB [test]> SELECT LENGTH('un testo');
+--------------------+
| LENGTH('un testo') |
+--------------------+
|                  8 |
+--------------------+
1 row in set (0.00 sec)
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