CREATE PROCEDURE sp_LPAD @RefString char(10) OUTPUT, @PadChar char(1) = '0' AS
	DECLARE @stringLen int, @newstring char(10)

	SET @stringLen = LEN(@RefString)
	SET @newstring = REPLICATE(@PadChar, DATALENGTH(@RefString) - @stringLen) + @RefString
	SET @RefString = @newstring