MySQL Tutorial/String Functions/CHAR

CHAR() returns a string consisting of the characters given by the code values of those integers

CHAR(N,... [USING charset_name])

CHAR() interprets each argument N as an integer.

NULL values are skipped.

By default, CHAR() returns a binary string.

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mysql> mysql> SELECT CHAR(7,2,3,4,5); +-----------------+ | CHAR(7,2,3,4,5) | +-----------------+ | | +-----------------+ 1 row in set (0.00 sec)</source>