Cans be imagined, if the data table to enable compression, then at query time, each data should be checked first unpack again, that's not slow to die.

Open/close data compression, exactly how high is the optimization of query performance?

CodePudding user response:

Relative to the speed of the disk I/o to put a large amount of compressed data into the memory consumption, CPU much faster

CodePudding user response:

Have you really checked?

IO fast decompression or memory fast?