git.postgresql.org Git - postgresql.git/commitdiff

diff --git a/src/backend/executor/nodeResult.c b/src/backend/executor/nodeResult.c

index ee6c91cb9dc0a79153d1008a6fd3bc9e36e22564..7c77dc0712113b87989364e6d0232a7c24a00568 100644 (file)

--- a/src/backend/executor/nodeResult.c

+++ b/src/backend/executor/nodeResult.c

*

* select 1 * 2

*

+ * insert into emp values ('mike', 15000)

+ *

+ * (Remember that in an INSERT or UPDATE, we need a plan tree that

+ * generates the new rows.)

+ *

* Result nodes are also used to optimise queries with constant

* qualifications (ie, quals that do not depend on the scanned data),

* such as:

*

* Result (with 2 > 1 qual)

* /

- * SeqScan (emp.all)

+ * SeqScan (emp.*)

*

* At runtime, the Result node evaluates the constant qual once,

* which is shown by EXPLAIN as a One-Time Filter. If it's

* Portions Copyright (c) 1994, Regents of the University of California

*

* IDENTIFICATION

- * $PostgreSQL: pgsql/src/backend/executor/nodeResult.c,v 1.30 2005年04月24日 11:46:21 neilc Exp $

+ * $PostgreSQL: pgsql/src/backend/executor/nodeResult.c,v 1.31 2005年04月24日 15:32:07 tgl Exp $

*

*-------------------------------------------------------------------------

*/