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.
15 years ago · 832c095d68
parent 7886cc73ad
commit 832c095d68
1 changed files with 3 additions and 2 deletions
--- 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">