Znakové (textové) funkce Name ASCII() BIN() BIT_LENGTH() CHAR() CHAR_LENGTH() CHARACTER_LENGTH() CONCAT() CONCAT_WS() ELT() EXPORT_SET() FIELD() FIND_IN_SET() HEX() INSERT() INSTR() LCASE() LOWER() LEFT() LENGTH() LIKE LOCATE() LPAD() LTRIM() MATCH MID() NOT LIKE NOT REGEXP OCT() ORD() POSITION() REGEXP REPEAT() REPLACE() REVERSE() RIGHT() RLIKE RPAD() RTRIM() SOUNDEX() SOUNDS LIKE SPACE() STRCMP() SUBSTR()SUBSTRING() SUBSTRING_INDEX() TRIM() UCASE() UPPER() UNHEX() Syntaxe CONCAT_WS (separator, string1, string2, ...) ELT(index number, string1, string2, string3,…) FIELD(search string, string1, string2, string3…..) FIND_IN_SET (search string, string list) INSERT (ori_string, in_pos, length, new_string) INSTR (ori str, substr) LPAD(str, len, padstr) MID (str, pos, len) POSITION (substr IN str) REPEAT (str, count) REPLACE (str, find_string, replace_with) STRCMP (expr1, expr2) SUBSTR (str, pos, len)