Check the below sample function execution and expected output to get the given string data in InitCap format.

Sample function execution:

SELECT [dbo].[fn_GetInitCap]('HI I AM ANVESH PATEL OWNER OF dbrnd.com') AS Result

Expected Output:

Result
-------------------------------------------
Hi I Am Anvesh Patel Owner Of Dbrnd.Com

Solution:

CREATE FUNCTION [dbo].[fn_GetInitCap] (@InputString varchar(200)) 
RETURNS VARCHAR(200)
AS
BEGIN

DECLARE @i INT
DECLARE @Char CHAR(1)
DECLARE @PrevChar CHAR(1)
DECLARE @OutputString VARCHAR(255)

SET @OutputString = LOWER(@InputString)
SET @i = 1

WHILE @i <= LEN(@InputString)
BEGIN
    SET @Char = SUBSTRING(@InputString, @i, 1)
    SET @PrevChar = CASE WHEN @i = 1 THEN ' '
                         ELSE SUBSTRING(@InputString, @i - 1, 1)
                    END
    IF @PrevChar IN (' ', ';', ':', '!', '?', ',', '.', '_', '-', '/', '&', '''', '(')
    BEGIN
        IF @PrevChar != '''' OR UPPER(@Char) != 'S'
			SET @OutputString = STUFF(@OutputString, @i, 1, UPPER(@Char))
    END
    SET @i = @i + 1
END
RETURN @OutputString

END
GO

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