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Remove extra word from src/backend/optimizer/README

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Etsuro Fujita 2018-08-31 16:42:30 +09:00
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src/backend/optimizer/README
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@ -1109,7 +1109,7 @@ of joining relations.
Partitionwise aggregates/grouping
---------------------------------
If the GROUP BY clause has contains all of the partition keys, all the rows
If the GROUP BY clause contains all of the partition keys, all the rows
that belong to a given group must come from a single partition; therefore,
aggregation can be done completely separately for each partition. Otherwise,
partial aggregates can be computed for each partition, and then finalized