Mindaugas Riauba kirjutas K, 10.09.2003 kell 13:21:
>
> router_db=# explain analyze update ifdata set ifspeed=256000,
> ifreason='12121', iflastupdate=CURRENT_TIMESTAMP WHERE clientid='#0003904#';
> QUERY PLAN
> ----------------------------------------------------------------------------
> ------------------------------------------------
> Index Scan using ifdata_clientid_key on ifdata (cost=0.00..5.64 rows=1
> width=116) (actual time=0.17..0.36 rows=1 loops=1)
> Index Cond: (clientid = '#0003904#'::character varying)
> Total runtime: 1.70 msec
> (3 rows)
could you try the same query on similar table, where clientid is int4 ?
is it faster ?
does the performance degrade at a slower rate?
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Hannu