From 8ad58279fa75636b776e4c648e1ffc7079a2c7d9 Mon Sep 17 00:00:00 2001
From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Fri, 8 Apr 2011 10:54:03 -0400
Subject: [PATCH] Add an example of WITH (UPDATE RETURNING) INSERT to the
INSERT ref page.
Per a discussion with Gavin Flower. This barely scratches the surface
of potential WITH (something RETURNING) use cases, of course, but it's
one of the simplest compelling examples I can think of.
---
doc/src/sgml/ref/insert.sgml | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/doc/src/sgml/ref/insert.sgml b/doc/src/sgml/ref/insert.sgml
index 629cc7ea558..a5c0d5a0a68 100644
--- a/doc/src/sgml/ref/insert.sgml
+++ b/doc/src/sgml/ref/insert.sgml
@@ -298,6 +298,20 @@ INSERT INTO tictactoe (game, board)
<programlisting>
INSERT INTO distributors (did, dname) VALUES (DEFAULT, 'XYZ Widgets')
RETURNING did;
+</programlisting>
+ </para>
+
+ <para>
+ Increment the sales count of the salesperson who manages the
+ account for Acme Corporation, and record the whole updated row
+ along with current time in a log table:
+<programlisting>
+WITH upd AS (
+ UPDATE employees SET sales_count = sales_count + 1 WHERE id =
+ (SELECT sales_person FROM accounts WHERE name = 'Acme Corporation')
+ RETURNING *
+)
+INSERT INTO employees_log SELECT *, current_timestamp FROM upd;
</programlisting>
</para>
</refsect1>
--
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