About string functions Functions in this section deal with the manipulation, evaluation, and creation of string values. Functions • “At” • “Concat” • “Decode” • “Encode” • “Format” • “Left” • “Len” • “Lower” • “Ltrim” • “Parse” • “Replace” • “Right” • “Rtrim” • “Space” • “Str” • “Stuff” • “Substr” • “Uuid” • “Upper” • “WordNum”