pgsql: Tweak nodeBitmapAnd to stop evaluating sub-plan scans if it finds

Started by Tom Lanealmost 21 years ago1 messagescomitters

tgl@sss.pgh.pa.us

almost 21 years ago

Log Message:
-----------
Tweak nodeBitmapAnd to stop evaluating sub-plan scans if it finds it's
got an empty bitmap after any step; the remaining subplans can no longer
affect the result. Per a suggestion from Ilia Kantor.

Modified Files:
--------------
pgsql/src/backend/executor:
nodeBitmapAnd.c (r1.2 -> r1.3)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/executor/nodeBitmapAnd.c.diff?r1=1.2&r2=1.3)
pgsql/src/backend/nodes:
tidbitmap.c (r1.5 -> r1.6)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/nodes/tidbitmap.c.diff?r1=1.5&r2=1.6)
pgsql/src/backend/optimizer/path:
indxpath.c (r1.187 -> r1.188)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/optimizer/path/indxpath.c.diff?r1=1.187&r2=1.188)
pgsql/src/include/nodes:
tidbitmap.h (r1.1 -> r1.2)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/nodes/tidbitmap.h.diff?r1=1.1&r2=1.2)