## Proper case

### from the Artful Common Queries page

 The basic idea is... lower-case the string upper-case the first character if it is a-z, and any other a-z character that follows a punctuation character Here is the function. To make it work with strings long than 128 characters, change its input and return declarations accordingly: ```DROP FUNCTION IF EXISTS proper; SET GLOBAL log_bin_trust_function_creators=TRUE; DELIMITER | CREATE FUNCTION proper( str VARCHAR(128) ) RETURNS VARCHAR(128) BEGIN DECLARE c CHAR(1); DECLARE s VARCHAR(128); DECLARE i INT DEFAULT 1; DECLARE bool INT DEFAULT 1; DECLARE punct CHAR(18) DEFAULT ' ()[]{},.-_\'!@;:?/'; -- David Rabby & Lenny Erickson added \' SET s = LCASE( str ); WHILE i <= LENGTH( str ) DO -- Jesse Palmer corrected from < to <= for last char BEGIN SET c = SUBSTRING( s, i, 1 ); IF LOCATE( c, punct ) > 0 THEN SET bool = 1; ELSEIF bool=1 THEN BEGIN IF c >= 'a' AND c <= 'z' THEN BEGIN SET s = CONCAT(LEFT(s,i-1),UCASE(c),SUBSTRING(s,i+1)); SET bool = 0; END; ELSEIF c >= '0' AND c <= '9' THEN SET bool = 0; END IF; END; END IF; SET i = i+1; END; END WHILE; RETURN s; END; | DELIMITER ; select proper("d'arcy"); +------------------+ | proper("d'arcy") | +------------------+ | D'Arcy | +------------------+ ``` But there are always exceptions, for example some guy with that name will want it spelled d'Arcy.Last updated 20 Jun 2012