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Documentation cleanup for the possible values of the datatype 'boolean'.

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This commit is contained in:
Bruce Momjian 2011-05-09 23:25:16 -04:00
parent 832c095d68
commit a9cc9df021
1 changed files with 3 additions and 3 deletions
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6
doc/src/sgml/datatype.sgml
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@ -2784,9 +2784,9 @@ P <optional> <replaceable>years</>-<replaceable>months</>-<replaceable>days</> <
<productname>PostgreSQL</productname> provides the <productname>PostgreSQL</productname> provides the
standard <acronym>SQL</acronym> type <type>boolean</type>; standard <acronym>SQL</acronym> type <type>boolean</type>;
see <xref linkend="datatype-boolean-table">. see <xref linkend="datatype-boolean-table">.
The <type>boolean</type> type can have one of only two states: The <type>boolean</type> type can have several states:
<quote>true</quote> or <quote>false</quote>. A third state, <quote>true</quote>, <quote>false</quote>, and a third state,
<quote>unknown</quote>, is represented by the <quote>unknown</quote>, which is represented by the
<acronym>SQL</acronym> null value. <acronym>SQL</acronym> null value.
</para> </para>