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> Actually, if you submit a patch that says either "SCROLL is the

2006年2月12日 19:02:15 +0000 (19:02 +0000)

committer Bruce Momjian <bruce@momjian.us>

2006年2月12日 19:02:15 +0000 (19:02 +0000)

default"
> or "NO SCROLL is the default", it will be rejected as incorrect. The
> reason is that the default behavior is different from either of these,
> as is explained in the NOTES section.

Ok, so *that's* where the bit about the query plan being simple enough.
Based on that, ISTM that it should be premissable for us to decide that
a cursor requiring a sort isn't "simple enough" to support SCROLL.

In any case, here's a patch that makes the non-standard behavior easier
for people to find.

Jim C. Nasby

doc/src/sgml/ref/declare.sgml patch | blob | blame | history

diff --git a/doc/src/sgml/ref/declare.sgml b/doc/src/sgml/ref/declare.sgml

index f43e08f970df4390e922137805de3dd39aad2ce1..40e25f99add07ff855ac45ef619c8010c1b9e045 100644 (file)

--- a/doc/src/sgml/ref/declare.sgml

+++ b/doc/src/sgml/ref/declare.sgml

@@ -1,5 +1,5 @@

<!--

-$PostgreSQL: pgsql/doc/src/sgml/ref/declare.sgml,v 1.34 2006年01月18日 06:49:26 neilc Exp $

+$PostgreSQL: pgsql/doc/src/sgml/ref/declare.sgml,v 1.35 2006年02月12日 19:02:15 momjian Exp $

PostgreSQL documentation

-->

@@ -129,7 +129,9 @@ DECLARE <replaceable class="parameter">name</replaceable> [ BINARY ] [ INSENSITI

execution plan, specifying <literal>SCROLL</literal> may impose

a performance penalty on the query's execution time.

<literal>NO SCROLL</literal> specifies that the cursor cannot be

- used to retrieve rows in a nonsequential fashion.

+ used to retrieve rows in a nonsequential fashion. The default is to

+ allow scrolling, but this is not the same as specifying

+ <literal>SCROLL</literal>. See <xref linkend="notes"> for more details.

</para>

</listitem>

</varlistentry>

@@ -198,7 +200,7 @@ DECLARE <replaceable class="parameter">name</replaceable> [ BINARY ] [ INSENSITI

</para>

</refsect1>

- <refsect1>

+ <refsect1 id="notes">

<title>Notes</title>

<para>

This is the main PostgreSQL git repository.

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