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Commit addc42c3 authored by Tom Lane's avatar Tom Lane
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Create the planner mechanism for optimizing simple MIN and MAX queries 

into indexscans on matching indexes.  For the moment, it only handles
int4 and text datatypes; next step is to add a column to pg_aggregate
so that all MIN/MAX aggregates can be handled.  Per my recent proposal.
parent c3294f1c
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