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Convert UPPER Case and LOWER Case to Proper Case/Title Case in SQL Server.

Here I will explain how to Convert UPPER Case and LOWER Case to Proper Case/Title Case using SQL Server.

First We have to create a function for proper case.


CREATE FUNCTION [dbo].[ProperCase]
(
    @Input as varchar(8000)
)
RETURNS varchar(8000)
AS
BEGIN
    DECLARE @Reset bit,
            @Proper varchar(8000),
            @Counter int,
            @FirstChar char(1)
             
    SELECT @Reset = 1, @Counter = 1, @Proper = ''
   
    WHILE (@Counter <= LEN(@Input))
    BEGIN
        SELECT  @FirstChar = SUBSTRING(@Input, @Counter, 1),
                @Proper = @Proper + CASE WHEN @Reset = 1 THEN UPPER(@FirstChar) ELSE LOWER(@FirstChar) END,
                @Reset = CASE WHEN @FirstChar LIKE '[a-zA-Z]' THEN 0 ELSE 1 END,
                @Counter = @Counter + 1
    END
   
    SELECT @Proper = REPLACE(REPLACE(REPLACE(LTRIM(RTRIM(@Proper)),'  ',' '+ CHAR(7)) , CHAR(7)+' ',''), CHAR(7),'')
    WHERE CHARINDEX('  ', @Proper) > 0
   
    RETURN @Proper
   
END

Then after write a query for test.

SELECT dbo.ProperCase('NIKHILSANGANI')

OUTPUT : Nikhilsangani
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Location: Surat, Gujarat, India

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