Showing posts with label numericalposition. Show all posts
Showing posts with label numericalposition. Show all posts

Friday, February 24, 2012

Convert letter to integer based on order in alphabet

Is there any way I can convert a letter of the alphabet to its numerical
position in the alphabet.
So if I select a field with 'A' I want to return 1, 'B' = 2, ... 'Z' = 26
I'd prefer not to join to a seperate reference table if possible.Terri wrote:
> Is there any way I can convert a letter of the alphabet to its numerical
> position in the alphabet.
> So if I select a field with 'A' I want to return 1, 'B' = 2, ... 'Z' = 26
> I'd prefer not to join to a seperate reference table if possible.
How about this?
SELECT ASCII(YourOneCharColumn) - ASCII('A') + 1 FROM YourTable|||CREATE TABLE alpha (alpha_char CHAR(1) NOT NULL PRIMARY KEY, alpha_num
INTEGER NOT NULL) ;
SELECT alpha_num
FROM some_table AS T
JOIN alpha AS A
ON T.col = A.alpha_char ;
David Portas
SQL Server MVP
--
"Terri" <terri@.cybernets.com> wrote in message
news:di6qca$357$1@.reader2.nmix.net...
> Is there any way I can convert a letter of the alphabet to its numerical
> position in the alphabet.
> So if I select a field with 'A' I want to return 1, 'B' = 2, ... 'Z' = 26
> I'd prefer not to join to a seperate reference table if possible.
>