Re: cannot get stable function to use index

On 12/30/2015 9:53 AM, Tom Lane wrote:
> Andy Colson <andy(at)squeakycode(dot)net> writes:
>> Here are my results, if there are any others you'd like to see please
>> let me know. Thanks Tom.
>
> For comparison, could we see the results for the non-partial case, ie
>
> explain analyze
> select *
> from search
> where search_vec @@ to_tsquery('213 & E & 13 & ST & N');
>
> regards, tom lane
>

QUERY PLAN

-------------------------------------------------------------------------------------------------------------------
Bitmap Heap Scan on search (cost=6.00..7.02 rows=1 width=100) (actual
time=0.029..0.029 rows=0 loops=1)
Recheck Cond: (search_vec @@ to_tsquery('213 & E & 13 & ST & N'::text))
-> Bitmap Index Scan on search_key (cost=0.00..6.00 rows=1
width=0) (actual time=0.025..0.025 rows=0 loops=1)
Index Cond: (search_vec @@ to_tsquery('213 & E & 13 & ST &
N'::text))
Total runtime: 0.060 ms
(5 rows)