From: | "Janek Sendrowski" <janek12(at)web(dot)de> |
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To: | pgsql-general(at)postgresql(dot)org |
Subject: | Suitable Index for my Table |
Date: | 2013-11-04 18:21:11 |
Message-ID: | trinity-6bfe7367-9b0a-4433-99f6-daf2927003ba-1383589270880@3capp-webde-bs15 |
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Lists: | pgsql-general |
Hi,
I've got a table with many Values of the Type REAL.
These are my metric distances or my pivots to my sentences.
The table looks like this:
ID INTEGER, distance1 REAL, distance2 REAL, distance3 REAL, distance4 REAL, ..., distance24 REAL
The range of the Value is in between 0 and 1. So it looks like this 0.196 or 0.891
That my query
WHERE value BETWEEN (distance1 - radius) AND (distance1 + radius)
WHERE value BETWEEN (distance2 - radius) AND (distance2 + radius)
WHERE value BETWEEN (distance3 - radius) AND (distance3 + radius)
WHERE value BETWEEN (distance4 - radius) AND (distance4 + radius)
...
Now I'm searching for a suitable index.
Does any of you have an idea?
TX very much for any support!
Janek Sendrowski
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