> Now, I'd like to make a JOIN-ed query of that table with itself, so that
> I'd get rows paiwise: every row containing data from *two* rows of the
> original TEST table so, that those data come from rows of consequtive
> ID's - not neceserly (depending on the TEST table contents) continuesly
> consequtive. Like:
>
> SELECT * from view_of_test;
> id | id+X | thread | thread+X | info | info+X
> ----+------+--------+----------+-------+---------
> 2 | 3 | 763 | 764 | A | B
> 3 | 6 | 764 | 5 | B | C
> 6 | 8 | 5 | 88946 | C | Cats
> 8 | 9 | 88946 | 69315 | Cats | Eifel
> 9 | 10 | 69315 | 96379 | Eifel | G
> -------------------------------------------------
> Is there an SQL construct to get it?
I would use a plpgsql procedure, select all the rows ORDER BY id, keep
the current and last row in a variable, and that's it.