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Results tagged with index
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user 175394
A database structure that can improve the speed of queries at the cost of disk space and slower inserts/updates. It stores a copy of one or more columns sorted but structures the data differently to allow faster access.
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Will PostgreSQL use parts of a composite index even if all parts aren't listed in the where ...
My question is, if I have an index on a table such as (colA, colB) and a query containing where colA = 'something' will Postgres use this index even though colB is not in the query? … Assume that no index containing just colA exists. It stands to reason that this index could be useful in the query execution, but I've had a hard time tracking the answer down definitively. …
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