Count to 100

Question

I have a stored procedure that currently works fine.  The procedure counts to 25 and returns a number when a "1" is present in that place value.  My problem is that I need to change the procedure to count to 100 and return a number when
a "1" is present in that place value, with a "1" in the 100 place it should return "00".
Here is my current procedure:
DECLARE 
@alias char(6),
@wfrs varchar(256),
@numbers varchar(300),
            @list varchar(300),
            @i int
SET @i = 0
SET @numbers = ''
SET @list = '' 
SET @wfrs = 1111000000000001110000001
SET @alias = 'WP'
WHILE(@i <= 25) BEGIN
            IF(SUBSTRING(@wfrs,@i,1) = 1) BEGIN
                  IF(@i < 10) BEGIN
                        SET @numbers  = '0' + LTRIM(STR(@i))
                        SET @list  = @list + @alias + '-' + @numbers + ' '
                   END ELSE BEGIN
                        SET @numbers  = '' + LTRIM(STR(@i))
                        SET @list  = @list + @alias + '-' + @numbers + ' '
                  END
            END 
            SET @i = @i + 1
      END
      PRINT @list
And this is the return from @list:  WP    -01 WP    -02 WP    -03 WP    -04 WP    -16 WP    -17 WP    -18 WP    -25
When I change to 100 characters:
DECLARE 
@alias char(6),
@wfrs varchar(256),
@numbers varchar(300),
            @list varchar(300),
            @i int
SET @i = 0
SET @numbers = ''
SET @list = '' 
SET @wfrs = 1111000000000001110000000000000000010000000000000000000000111000000000000000000000000000000001110001
SET @alias = 'WP'
WHILE(@i <= 100) BEGIN
            IF(SUBSTRING(@wfrs,@i,1) = 1) BEGIN
                  IF(@i < 10) BEGIN
                        SET @numbers  = '0' + LTRIM(STR(@i))
                        SET @list  = @list + @alias + '-' + @numbers + ' '
                   END ELSE BEGIN
                        SET @numbers  = '' + LTRIM(STR(@i))
                        SET @list  = @list + @alias + '-' + @numbers + ' '
                  END
            END 
            SET @i = @i + 1
      END
      PRINT @list
I get this error: 
The number '1111000000000001110000000000000000010000000000000000000000111000000000000000000000000000000001110001' is out of the range for numeric representation (maximum precision 38).
Where is the "Maximum Precision" classified?

Answer 1

Below should work:-
Since wrfs is a varchar, it should be set between ''
DECLARE 
@alias char(6),
@wfrs varchar(256),
@numbers varchar(300),
            @list varchar(max),
            @i int
SET @i = 0
SET @numbers = ''
SET @list = '' 
SET @wfrs = '1111000000000001110000000000000000010000000000000000000000111000000000000000000000000000000001110001'
SET @alias = 'WP'
WHILE(@i <= 100) BEGIN
            IF(SUBSTRING(@wfrs,@i,1) = 1) BEGIN
                  IF(@i < 10) BEGIN
                        SET @numbers  = '0' + LTRIM(STR(@i))
                        SET @list  = @list + @alias + '-' + @numbers + ' '
                   END ELSE BEGIN
                        SET @numbers  = '' + LTRIM(STR(@i))
                        SET @list  = @list + @alias + '-' + @numbers + ' '
                  END
            END 
            SET @i = @i + 1
      END
      PRINT @list
Please mark the answer as helpful if i have answered your query. Thanks and Regards, Kartar Rana