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Fix typos.

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Jim Nasby
This commit is contained in:
Robert Haas 2016-03-17 07:26:20 -04:00
parent fc201dfd95
commit 0218e8b3fa
1 changed files with 3 additions and 3 deletions
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src/backend/optimizer/README
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@ -900,8 +900,8 @@ above, plus a relids set, which allows there to be more than one upperrel
of the same kind. We use NULL for the relids if there's no need for more
than one upperrel of the same kind. Currently, in fact, the relids set
is vestigial because it's always NULL, but that's expected to change in
future. For example, in planning set operations, we might need the relids
to denote which subset of the leaf SELECTs has been combined in a
the future. For example, in planning set operations, we might need the
relids to denote which subset of the leaf SELECTs has been combined in a
particular group of Paths that are competing with each other.
The result of subquery_planner() is always returned as a set of Paths
@ -974,5 +974,5 @@ One of the keys to making parallel query effective is to run as much of
the query in parallel as possible. Therefore, we expect it to generally
be desirable to postpone the Gather stage until as near to the top of the
plan as possible. Expanding the range of cases in which more work can be
pushed below the Gather (and costly them accurately) is likely to keep us
pushed below the Gather (and costing them accurately) is likely to keep us
busy for a long time to come.