How to achieve count instead of case statement in SQL?

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Hi all,
i need some solution about my sql query.
my xml is:

HTML

<main>
    <data>
        <counter>A</counter> 
    </data>
</main>

my query is :

C#

CREATE TABLE #temp
(
   
    COUNTER VARCHAR(1)
);
 
INSERT #temp
SELECT    
    Data.value('(/COUNTER/text())[1]','VARCHAR(100)') AS COUNTER,

FROM
    @XML.nodes('/main/Data') AS AdviceData (Data);

INSERT INTO SECONDTABLE(COUNTER)
SELECT CASE T.COUNTER WHEN 'A' THEN 1 END AS COUNTER
FROM #temp T

The above query is working fine.
but i don't want to use case statement. why because sometimes counter is Z then i should show 26.
without case statement how can i achieve this.

thanks in advance

What I have tried:

how to achieve count instead of case statement in sql?

Posted 15-Jun-16 1:05am

stellus

Updated 15-Jun-16 3:07am

OriginalGriff

v3

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Richard Deeming 15-Jun-16 9:22am

NB: XML is case-sensitive. Data won't match a node called data, and COUNTER won't match a code called counter.

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Ben J. Boyle · Answer 1 · 2016-06-15T03:07:00

You can make use of the ASCII function and convert it that way.

SQL

declare @counter as nvarchar
set @counter = 'A'

select ascii (@counter) -64 as Counter

The acsii value for uppercase A is 65, so simply knock 64 off the result. Bear in mind that lowercase values are different so you may want to force it to upper unless you're confident that the value in the xml is always uppercase.

In your case

SQL

INSERT INTO SECONDTABLE(COUNTER)
select ascii (t.COUNTER) -64 as Counter
FROM #temp T