Log Message:
-----------
Fix rounding problem in interval_div by using rint(), and improve
interval_mul function.
Modified Files:
--------------
pgsql/src/backend/utils/adt:
timestamp.c (r1.145 -> r1.146)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/adt/timestamp.c.diff?r1=1.145&r2=1.146)
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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
