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| author | Bruce Momjian <bruce@momjian.us> | 2011-05-09 21:04:22 -0400 |
|---|---|---|
| committer | Bruce Momjian <bruce@momjian.us> | 2011-05-09 21:04:22 -0400 |
| commit | f71b5c77fa0015492a26838eb489293effee1723 (patch) | |
| tree | 7542889904f0028516aeab1ed0e4119363ad87ea | |
| parent | 65a7cd0e9ced21ec7ad67c11cd9a263640fe22e9 (diff) | |
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.
| -rw-r--r-- | doc/src/sgml/func.sgml | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml index 4852231141e..83adc33333b 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"> |