Log Message:
-----------
Make set_function_size_estimates() marginally smarter: per original
comment, it can at least test whether the expression returns set.
Modified Files:
--------------
pgsql/src/backend/optimizer/path:
costsize.c (r1.147 -> r1.148)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/optimizer/path/costsize.c.diff?r1=1.147&r2=1.148)
---------------------------(end of broadcast)---------------------------
TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
match
