Re: expression (functional) index use in joins

On Wednesday 26 November 2003 16:38, Roger Ging wrote:
> I just installed v7.4 and restored a database from v7.3.4.
[snip]

Hmm - you seem to be getting different row estimates in the plan. Can you
re-analyse both versions and post EXPLAIN ANALYSE rather than just EXPLAIN?

>                 ->  Seq Scan on program p  (cost=0.00..15192.35
> rows=4335 width=20)
>
> planner results on 7.3.4:
>
>           ->  Index Scan using idx_program_mri_id_no_program on program
> p  (cost=0.00..3209.16 rows=870 width=20)

--
  Richard Huxton
  Archonet Ltd