pgsql-server/src backend/catalog/dependency.c ...

CVSROOT: /cvsroot
Module name: pgsql-server
Changes by: tgl(at)postgresql(dot)org 02/09/11 10:48:55

Modified files:
src/backend/catalog: dependency.c
src/backend/optimizer/util: clauses.c var.c
src/backend/rewrite: rewriteDefine.c rewriteHandler.c
rewriteManip.c
src/include/optimizer: clauses.h
src/backend/optimizer/prep: prepunion.c

Log message:
Tweak querytree-dependency-extraction code so that columns of tables
that are explicitly JOINed are not considered dependencies unless they
are actually used in the query: mere presence in the joinaliasvars
list of a JOIN RTE doesn't count as being used. The patch touches
a number of files because I needed to generalize the API of
query_tree_walker to support an additional flag bit, but the changes
are otherwise quite small.