This user-defined function takes an input string and converts it to upper and lower case (or proper case) format. It can handle names like O'Brian and McMurray. It also standardizes P.O. Boxes.
Create FUNCTION UpperLowerCase
(@name varchar(100))
RETURNS varchar(100)
AS
BEGIN
declare @cnt smallint
select @cnt = 2
select @name = ltrim(rtrim(@name))
if @name is null or len(@name) = 0
goto finish
select @name = upper(substring(@name,1,1)) + lower(substring(@name,2,len(@name)-1))
WHILE @cnt < len(@name)
BEGIN
select @name = substring(@name,1, @cnt) +
upper(substring(@name,@cnt+1,1)) +
substring(@name,@cnt+2,len(@name)-(@cnt+1))
where @name is not null
and @name <> ' '
and (substring(@name,@cnt,1) in (' ', '-', '/')
or (substring(@name,@cnt,1) between '0' and '9'
and substring(@name,@cnt+1,1) between 'a' and 'z'
and substring(@name,@cnt+1,1) not in ('n','t','s','r'))
or (substring(@name,@cnt,1) in ('.')
and substring(@name,@cnt+1,1) not in (' ',','))
or substring(@name,@cnt-1,2) = 'mc'
or (substring(@name,@cnt-1,1) = 'O'
and substring(@name,@cnt,1) = ''''))
select @cnt = @cnt + 1
END
select @name = 'P.O. Box ' + substring(@name,8,len(@name)-7)
where @name like 'Po Box%' and len(@name) > 7
select @name = 'P.O. Box ' + substring(@name,9,len(@name)-8)
where @name like 'P O Box%' and len(@name) > 8
select @name = 'P.O. Box ' + substring(@name,17,len(@name)-16)
where @name like 'Post Office Box%' and len(@name) > 16
finish:
RETURN @name
END
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