Put back example of using Result node to execute an INSERT.

tglsfdc · tglsfdc · commit 24475a7618d3 · 2005-04-24T15:32:07.000Z
diff --git a/src/backend/executor/nodeResult.c b/src/backend/executor/nodeResult.c
@@ -10,6 +10,11 @@
  *
  *				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:
@@ -20,7 +25,7 @@
  *
  *						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
@@ -33,7 +38,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/executor/nodeResult.c,v 1.30 2005/04/24 11:46:21 neilc Exp $
+ *	  $PostgreSQL: pgsql/src/backend/executor/nodeResult.c,v 1.31 2005/04/24 15:32:07 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */

Original file line number	Diff line number	Diff line change
`@@ -10,6 +10,11 @@`
`10`	`10`	`*`
`11`	`11`	`* select 1 * 2`
`12`	`12`	`*`
	`13`	`+ * insert into emp values ('mike', 15000)`
	`14`	`+ *`
	`15`	`+ * (Remember that in an INSERT or UPDATE, we need a plan tree that`
	`16`	`+ * generates the new rows.)`
	`17`	`+ *`
`13`	`18`	`* Result nodes are also used to optimise queries with constant`
`14`	`19`	`* qualifications (ie, quals that do not depend on the scanned data),`
`15`	`20`	`* such as:`
`@@ -20,7 +25,7 @@`
`20`	`25`	`*`
`21`	`26`	`* Result (with 2 > 1 qual)`
`22`	`27`	`* /`
`23`		`- * SeqScan (emp.all)`
	`28`	`+ * SeqScan (emp.*)`
`24`	`29`	`*`
`25`	`30`	`* At runtime, the Result node evaluates the constant qual once,`
`26`	`31`	`* which is shown by EXPLAIN as a One-Time Filter. If it's`
`@@ -33,7 +38,7 @@`
`33`	`38`	`* Portions Copyright (c) 1994, Regents of the University of California`
`34`	`39`	`*`
`35`	`40`	`* IDENTIFICATION`
`36`		`- * $PostgreSQL: pgsql/src/backend/executor/nodeResult.c,v 1.30 2005/04/24 11:46:21 neilc Exp $`
	`41`	`+ * $PostgreSQL: pgsql/src/backend/executor/nodeResult.c,v 1.31 2005/04/24 15:32:07 tgl Exp $`
`37`	`42`	`*`
`38`	`43`	`*-------------------------------------------------------------------------`
`39`	`44`	`*/`