Commit 8c314b9

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Finish refactoring make_foo() functions in createplan.c.

This patch removes some redundant cost calculations that I left for later cleanup in commit 3fc6e2d. There's now a uniform policy that the make_foo() convenience functions don't do any cost calculations. Most of their callers copy costs from the source Path node, and for those that don't, the calculation in the make_foo() function wasn't necessarily right anyhow. (make_result() was particularly a mess, as it was serving multiple callers using cost calcs designed for only the first one or two that had ever existed.) Aside from saving a few cycles, this ensures that what EXPLAIN prints matches the costs we used for planning purposes. It does not change any planner decisions, since the decisions are already made.

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src
- backend/optimizer
  - plan
  - util
    - pathnode.c
- include/optimizer
  - pathnode.h

5 files changed

+201

-249

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