In MySQL, once we use the COMPRESS method to compress a particular text, the LENGTH of the resultant text is not the same as that of the original text.

However, using UNCOMPRESSED_LENGTH method on the compressed text results in the exact length of the original text, even though the text is currently compressed.


SELECT UNCOMPRESSED_LENGTH(COMPRESS('MyName'))+-----------------------------------------+| UNCOMPRESSED_LENGTH(COMPRESS('MyName')) |+-----------------------------------------+|                                      6  | +-----------------------------------------+

Now, use the below query

SELECT LENGTH(COMPRESS('MyName'))+----------------------------+| LENGTH(COMPRESS('MyName')) |+----------------------------+|                         18 | +----------------------------+

This indicates the different values in length using the two different LENGTH methods.

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