Question

I have two tables like :

Docs {#DocId, SomeData}
KeyValues {#RowId, DocId, Name, Value}

and it have values like :

Docs

D1 | This is content of doc 1

D2 | This is content of doc 2

Key-values

1 | D1 | Firstname | David

2 | D1 | Lastname  | Andersson

3 | D2 | Firstname | Anders

4 | D2 | Lastname  | Andersson

I would like to get Doc.SomeData and order by the value of Firstname

How-would you do it? Pivot? Joins?

EDITED
I might have simplified to much. The KeyValue table has the value divided into several columns, but the actual column to get the value is defined in C# code where the SQL is generated on the fly:

KeyValues {#RowId, DocId, Name, StringValue, IntegerNumericValue, FractalNumericValue, BoolValue, GuidValue, DateTimeValue}

Using Left Joins would need me to issue one left join for each sorting expression otherwise the set might get duplication of docs in the result.

Answer 1

Look in the comments to the Gist for the solution. Any tweaks are highly appreciated.

https://gist.github.com/1343449#comments