The Ultimate Guide to High Availability with MariaDB

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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