extracting column3 value from 2 existing columns in sql 2008

Hello, newbie to SQL (SQL server 2008).

I need to extract the value in a column using the concatenation of 2 existing values in 2 different columns. for example:

Column 1 Column 2  Column3
Valuea       Valueb       Extract Val

Need to pull the value "extract val" by reading the key of concat of "valuea" and "valueb"

Is that possible via query?


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Jim HornMicrosoft SQL Server Data DudeCommented:
Give this a whirl and let us know if it works...
SELECT Column3
FROM YourTable
WHERE Column1 = 'Valuea' AND Column2 = 'Valueb'

Open in new window

PortletPaulEE Topic AdvisorCommented:
yep, probably no need for "concat" if the data is in those 3 columns as shown, and your use of "extract" is probably just "select" in SQL

SELECT id, Column1, Column2, Column3
FROM yourtable
WHERE Column1 = 'Valuea' AND Column2 = 'Valueb'

would produce something like this

id     Column1 Column2  Column3
1       Valuea      Valueb     Extract Val
2       Valuea      Valueb     another Wanted value

If you just want Column3 then just adjust the SELECT clause

SELECT Column3
FROM yourtable
WHERE Column1 = 'Valuea' AND Column2 = 'Valueb'

Extract Val
another Wanted value

Note If you specifically just want that one column AND a single row (for 'Extract Val') then you may need more than just Valuea and Valueb as conditions in the WHERE clause. This totally depends on the data in your table, in my example I would need to also use id=1

SELECT Column3
FROM yourtable
WHERE Column1 = 'Valuea' AND Column2 = 'Valueb' AND id = 1

Extract Val

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Microsoft SQL Server 2008

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