pgsql-server/src/backend/utils/adt selfuncs.c

CVSROOT: /cvsroot
Module name: pgsql-server
Changes by: tgl@svr1.postgresql.org 04/01/17 16:09:35

Modified files:
src/backend/utils/adt: selfuncs.c

Log message:
Repair misestimation of indexscan CPU costs. When an indexqual contains
a run-time key (that is, a nonconstant expression compared to the index
variable), the key is evaluated just once per scan, but we were charging
costs as though it were evaluated once per visited index entry.