First cut at making indexscan cost estimates depend on correlation
Tom Lane <tgl@sss.pgh.pa.us>
First cut at making indexscan cost estimates depend on correlation between index order and table order.
Files
| Path | Change | +/− |
|---|---|---|
| doc/src/sgml/indexcost.sgml | modified | +31 −5 |
| src/backend/optimizer/path/costsize.c | modified | +88 −33 |
| src/backend/optimizer/util/var.c | modified | +36 −21 |
| src/backend/utils/adt/selfuncs.c | modified | +118 −19 |
| src/backend/utils/cache/lsyscache.c | modified | +31 −1 |
| src/include/catalog/pg_proc.h | modified | +5 −5 |
| src/include/optimizer/var.h | modified | +3 −1 |
| src/include/utils/lsyscache.h | modified | +3 −1 |