From 832c095d686e89f6390e0ff3e91b4c8015c2c3f7 Mon Sep 17 00:00:00 2001
From: Bruce Momjian <bruce@momjian.us>
Date: Mon, 9 May 2011 21:04:18 -0400
Subject: [PATCH] Update documentation to state there is three-value logic, not
three-value boolean logic.
Backpatch to 9.0.X since we just got another bug report about this
today.
---
doc/src/sgml/func.sgml | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 657835c701b..c1a34fb1698 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -82,8 +82,9 @@
<member><literal>NOT</></member>
</simplelist>
- <acronym>SQL</acronym> uses a three-valued Boolean logic where the null value represents
- <quote>unknown</quote>. Observe the following truth tables:
+ <acronym>SQL</acronym> uses a three-valued logic system with true,
+ false, and <literal>null</>, which represents <quote>unknown</quote>.
+ Observe the following truth tables:
<informaltable>
<tgroup cols="4">
--
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