Re: [SQL] turning a table by 90 degrees

On 1999-12-08, Thilo Mezger mentioned:

> hi,
>
> i've got a table like this (plus a primary key and some other fields):
>
> key | value | custid
> ---------+---------+---------
> name | peter | 2
> age | 123 | 2
> foo | bar | 2
> [...] | |
> name | john | 3
> [...]
>
> you can think of a table which is turned by 90 degrees. this can be
> quite useful when you don't know in advance what key/values pairs you
> have to store.
>
> now it would be nice to find a query which returns this result for
> custid=2:
>
> name | age | foo
> ------+-----+------
> peter | 123 | bar

I don't see why a table
SELECT * FROM your_table WHERE custid = 2;
would be any different. Just switch the column and row addressing logic in
your application.

key | value | custid
---------+---------+---------
name | peter | 2
age | 123 | 2
foo | bar | 2

There's really no way to do what you suggested.

--
Peter Eisentraut Sernanders väg 10:115
peter_e(at)gmx(dot)net 75262 Uppsala
http://yi.org/peter-e/ Sweden