UNCOMPRESSED_LENGTH

Return length of uncompressed string. This function returns the length of a compressed string before it was compressed.

Syntax

UNCOMPRESSED_LENGTH(compressed_string)

Description

Returns the length that the compressed string had before being compressed with COMPRESS().

UNCOMPRESSED_LENGTH() returns NULL or an incorrect result if the string is not compressed.

Returns MYSQL_TYPE_LONG, or int(10), if the result fits within 32-bits.

Examples

SELECT UNCOMPRESSED_LENGTH(COMPRESS(REPEAT('a',30)));
+-----------------------------------------------+
| UNCOMPRESSED_LENGTH(COMPRESS(REPEAT('a',30))) |
+-----------------------------------------------+
|                                            30 |
+-----------------------------------------------+

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