Markus Schaber <[EMAIL PROTECTED]> writes:
> But as it fetches all the rows through the index, why doesn't it
> recognize that, fetching this way, the rows are already sorted by
> l_postcode?

Tell it to "ORDER BY cd, l_postcode".

> Is Postgresql 8 more intelligend in this case?

No.

                        regards, tom lane

---------------------------(end of broadcast)---------------------------
TIP 9: the planner will ignore your desire to choose an index scan if your
      joining column's datatypes do not match

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