git.postgresql.org Git - postgresql.git/commit
2007年2月20日 17:32:18 +0000 (17:32 +0000)
2007年2月20日 17:32:18 +0000 (17:32 +0000)
commit 9cbd0c155d1602aad879f510256b626c58942080
Remove the Query structure from the executor's API. This allows us to stop
storing mostly-redundant Query trees in prepared statements, portals, etc.
To replace Query, a new node type called PlannedStmt is inserted by the
planner at the top of a completed plan tree; this carries just the fields of
Query that are still needed at runtime. The statement lists kept in portals
etc. now consist of intermixed PlannedStmt and bare utility-statement nodes
--- no Query. This incidentally allows us to remove some fields from Query
and Plan nodes that shouldn't have been there in the first place.
Still to do: simplify the execution-time range table; at the moment the
range table passed to the executor still contains Query trees for subqueries.
initdb forced due to change of stored rules.
39 files changed:
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