pgsql: Replace has_multiple_baserels() with a bitmap test on all_basere

Replace has_multiple_baserels() with a bitmap test on all_baserels.

Since we added the PlannerInfo.all_baserels set, it's not really
necessary to grovel over the rangetable to count baserels in the
current query.  So let's drop has_multiple_baserels() in favor
of a bms_membership() test.  This might be microscopically
faster, but the main point is to remove some unnecessary code.

Richard Guo

Discussion: https://postgr.es/m/CAMbWs4_8RcSbbfs1ASZLrMuL0c0EQgXWcoLTQD8swBRY_pQQiA@mail.gmail.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/14661ba1a7a6b0f82b8451cbb51a5c2a11676635

Modified Files
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src/backend/optimizer/path/allpaths.c | 24 +-----------------------
1 file changed, 1 insertion(+), 23 deletions(-)