diff options
Diffstat (limited to 'doc/src/sgml/plan.sgml')
| -rw-r--r-- | doc/src/sgml/plan.sgml | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/doc/src/sgml/plan.sgml b/doc/src/sgml/plan.sgml index bc83b88891..fb82a45c35 100644 --- a/doc/src/sgml/plan.sgml +++ b/doc/src/sgml/plan.sgml @@ -1,5 +1,5 @@ <!-- -$Header: /cvsroot/pgsql/doc/src/sgml/Attic/plan.sgml,v 2.3 2000/03/31 17:45:00 tgl Exp $ +$Header: /cvsroot/pgsql/doc/src/sgml/Attic/plan.sgml,v 2.4 2000/08/29 20:02:07 momjian Exp $ --> <chapter> @@ -40,7 +40,7 @@ $Header: /cvsroot/pgsql/doc/src/sgml/Attic/plan.sgml,v 2.3 2000/03/31 17:45:00 t <itemizedlist> <listitem> <para> - Estimated startup cost (time expended before output scan can start, + Estimated start-up cost (time expended before output scan can start, eg, time to do the sorting in a SORT node). </para> </listitem> @@ -241,7 +241,7 @@ Hash Join (cost=89.60..574.10 rows=100 width=296) using ye same olde indexscan, stash them into an in-memory hash table, and then do a sequential scan of tenk2, probing into the hash table for possible matches of "t1.unique2 = t2.unique2" at each tenk2 tuple. - The cost to read tenk1 and set up the hash table is entirely startup + The cost to read tenk1 and set up the hash table is entirely start-up cost for the hash join, since we won't get any tuples out until we can start reading tenk2. The total time estimate for the join also includes a pretty hefty charge for CPU time to probe the hash table |