git.postgresql.org Git - postgresql.git/commit

git projects / postgresql.git / commit

Skip eval_const_expressions when the query is such that the expression

author Tom Lane <tgl@sss.pgh.pa.us>

2005年5月30日 01:04:44 +0000 (01:04 +0000)

committer Tom Lane <tgl@sss.pgh.pa.us>

2005年5月30日 01:04:44 +0000 (01:04 +0000)

commit c8f81df41b1269714c08a508ccecc0adc8ef96bd

tree 46cad8f3f407e2e8c9871e78a7f76c4da2704ebd tree

parent 03a542ba630fe800afc98dc08a6f0d2b93b0addf commit | diff

Skip eval_const_expressions when the query is such that the expression
would be evaluated only once anyway (ie, it's just a SELECT with no
FROM or an INSERT ... VALUES). The planner can't do it any faster than
the executor, so no point in an extra copying of the expression tree.

src/backend/optimizer/plan/planner.c diff | blob | blame | history

This is the main PostgreSQL git repository.

RSS Atom