UNCOMPRESSED_LENGTH
Sintassi
UNCOMPRESSED_LENGTH(stringa_compressa)
Spiegazione
Restituisce la lunghezza che la stringa compressa aveva prima di essere compressa con COMPRESS().
UNCOMPRESSED_LENGTH() restituisce NULL o un risultato imprevedibile se la stringa non è compressa.
Esempi
MariaDB [(none)]> SELECT UNCOMPRESSED_LENGTH(COMPRESS(REPEAT('a',30)));
+-----------------------------------------------+
| UNCOMPRESSED_LENGTH(COMPRESS(REPEAT('a',30))) |
+-----------------------------------------------+
| 30 |
+-----------------------------------------------+
1 row in set (0.00 sec)
MariaDB [(none)]>
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