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Type:
Task
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Resolution: Unresolved
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Priority:
Normal
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None
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Affects Version/s: None
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Component/s: Schema Change
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None
Postgres 9.2+ supports index-only scans. This means that it can be useful to have indexes with additional columns that aren't used as predicates, if that allows using an index-only scan for some join. We should go through the potentially affected queries and check whether extending an index might improve performance.