Constraint exclusion oddity with composite index - Mailing list pgsql-hackers

From Joshua D. Drake
Subject Constraint exclusion oddity with composite index
Date
Msg-id 46607C83.4050604@commandprompt.com
Whole thread Raw
Responses Re: Constraint exclusion oddity with composite index
List pgsql-hackers
Hello,

Assume the following:

index on: (id, adate)

constraint CHECK(adate > '01-01-2007' AND adate < '04-01-2007');

The planner will not use the index listed above. It does work if we have 
an index on just timehit in addition to the above. (of course)

Is this expected?

Joshua D. Drake

P.S. 8.1.9

-- 
      === The PostgreSQL Company: Command Prompt, Inc. ===
Sales/Support: +1.503.667.4564 || 24x7/Emergency: +1.800.492.2240
Providing the most comprehensive  PostgreSQL solutions since 1997             http://www.commandprompt.com/

Donate to the PostgreSQL Project: http://www.postgresql.org/about/donate
PostgreSQL Replication: http://www.commandprompt.com/products/



pgsql-hackers by date:

Previous
From: Andrew Dunstan
Date:
Subject: Re: Command tags in create/drop scripts
Next
From: Tom Lane
Date:
Subject: Re: Command tags in create/drop scripts