Avatar of PeterBaileyUk
PeterBaileyUk
 asked on

sql server query

I am not sure how to make a query to take a field called word from tblwords and to add up the combined ascii code numbers.

so if the string in field word is:
'My word'
then the field AsciiEncode is populated with 674

i did find this on the ms website but not sure how to amalgamate that process into a query.

SET TEXTSIZE 0;  
SET NOCOUNT ON;  
-- Create the variables for the current character string position   
-- and for the character string.  
DECLARE @position int, @string char(15);  
-- Initialize the variables.  
SET @position = 1;  
SET @string = 'Du monde entier';  
WHILE @position <= DATALENGTH(@string)  
   BEGIN  
   SELECT ASCII(SUBSTRING(@string, @position, 1)),  
      CHAR(ASCII(SUBSTRING(@string, @position, 1)))  
    SET @position = @position + 1  
   END;  
SET NOCOUNT OFF;  
GO  

Open in new window

I am just experimenting with an idea, i may at some stage need to store those codes in a field 77-121-32-119-111-114-100 but i am not sure yet.
Microsoft SQL Server

Avatar of undefined
Last Comment
Nakul Vachhrajani

8/22/2022 - Mon
ASKER CERTIFIED SOLUTION
Nakul Vachhrajani

THIS SOLUTION ONLY AVAILABLE TO MEMBERS.
View this solution by signing up for a free trial.
Members can start a 7-Day free trial and enjoy unlimited access to the platform.
See Pricing Options
Start Free Trial
GET A PERSONALIZED SOLUTION
Ask your own question & get feedback from real experts
Find out why thousands trust the EE community with their toughest problems.
Pawan Kumar

Use below simple query to get this..

DECLARE @intValue AS VARCHAR(100) = 'My word'

SELECT SUM( ASCII(SUBSTRING(@intValue,number,1)) ) ASCIICounts FROM
( 
  SELECT DISTINCT number FROM
  MASTER..SPT_VALUES WHERE number > 0 AND number <= DATALENGTH(@intValue) 
) x

Open in new window

Nakul Vachhrajani

The problem with master..spt_values is that the executing user needs permissions to the master database - something that would not be the case in production environments.

A good alternate would be to use a similar tally table that exists in the user database itself.
PeterBaileyUk

ASKER
Do I have to create the function first and run the sql to have the function stored in the db? I am having trouble understanding that bit as in ID: 41792646

then after that I can
 select word, @sampleInput (word)
from tblwords
Experts Exchange is like having an extremely knowledgeable team sitting and waiting for your call. Couldn't do my job half as well as I do without it!
James Murphy
PeterBaileyUk

ASKER
i ran following with successful execution
--Safety Check
IF OBJECT_ID('dbo.func_ASCIIEncodeString','FN') IS NOT NULL
BEGIN
    DROP FUNCTION dbo.func_ASCIIEncodeString
END
GO

--Create the function
CREATE FUNCTION dbo.func_ASCIIEncodeString (@inputString VARCHAR(15))
    RETURNS INT
AS
BEGIN
    -- Create the variables for the current character string position
    DECLARE @position INT = 1;  
    DECLARE @ASCIIEncodedValue INT = 0;

    -- Initialize the variables.  
    SET @position = 1;
    WHILE @position <= DATALENGTH(@inputString)  
       BEGIN  
          --Debug Point
          --SELECT ASCII(SUBSTRING(@inputString, @position, 1)) AS ASCIIValue,  
             --    CHAR(ASCII(SUBSTRING(@inputString, @position, 1))) AS CharacterValue

          --Add the ASCII value of the currently read character into the return variable
          SELECT @ASCIIEncodedValue += ASCII(SUBSTRING(@inputString, @position, 1));
          SET @position = @position + 1;
       END

    --Finally return to caller
    RETURN @ASCIIEncodedValue;
END

Open in new window

PeterBaileyUk

ASKER
I am upto here

its not quite right I am stuck in vb function mentality

use Dictionary

insert into TblWords(AsciiEncode)
selectdbo.func_ASCIIEncodeString(Word)
from TblWords

Open in new window

PeterBaileyUk

ASKER
I am doing this it should be an update so calling like this:
use Dictionary

UPDATE tblwords
SET AsciiEncode = (
select dbo.func_ASCIIEncodeString(Word)
from TblWords)

Open in new window


it got partially thru and now halted with error:
I am just seeing what happened if i can find it

Msg 512, Level 16, State 1, Line 3
Subquery returned more than 1 value. This is not permitted when the subquery follows =, !=, <, <= , >, >= or when the subquery is used as an expression.
⚡ FREE TRIAL OFFER
Try out a week of full access for free.
Find out why thousands trust the EE community with their toughest problems.
PeterBaileyUk

ASKER
thank you Nakul
Nakul Vachhrajani

You're welcome! To fix the sub-query error in your update statement, you can change it to the following:

UPDATE tblw
SET tblw.AsciiEncode = dbo.func_ASCIIEncodeString(tblw.Word)
FROM dbo.tblWords AS tblw

Open in new window