HEX

suggest change

Convert the argument to hexadecimal. This is used for strings.

HEX('fööbar') -- 66F6F6626172 -- in "CHARACTER SET latin1" because "F6" is hex for ö
HEX('fööbar') -- 66C3B6C3B6626172  -- in "CHARACTER SET utf8 or utf8mb4" because "C3B6" is hex for ö

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