Scalar. Returns the characters responding to one or more Unicode code points, or the UTF-8 code points if the -U server option is specified.
char ( expression [,...] )
expression | One or more Unicode code points. The arguments must be integers. |
An invalid code point, 0, or NULL returns NULL. The function returns a string.
char (68) returns 'D'.
char(68, 68, 68) returns 'DDD'.