Your name : Patrick=20
Your email address : Valsecchi
System Configuration
---------------------
Architecture (example: Intel Pentium) : Intel Pentium
Operating System (example: Linux 2.0.26 ELF) : Linux 2.4.20
PostgreSQL version (example: PostgreSQL-7.3.3): PostgreSQL-7.3.3
Compiler used (example: gcc 2.95.2) : gcc 3.2
Please enter a FULL description of your problem:
------------------------------------------------
When doing the following query, it's obvious that postgres should use
the index:
stats=3D# explain select min(time) from call;
QUERY PLAN
------------------------------------------------------------------------
Aggregate (cost=3D49779.82..49779.82 rows=3D1 width=3D8)
-> Seq Scan on stb_call (cost=3D0.00..44622.06 rows=3D2063106 width=3D=
8)
(2 rows)
stats=3D# \d call
Table "public.call"
Column | Type | Modifiers
---------+--------------------------+-----------
a | integer | not null
b | integer | not null
time | timestamp with time zone | not null
d | character varying(4) |
e | character varying(4) |
f | character varying(4) |
g | character varying(15) | not null
h | character varying(7) |
i | smallint | not null
Indexes: call_time btree ("time")
stats=3D# select count(*) from call;
count
---------
2063106
(1 row)
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