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Remove obsolete tip about casting bool to int, per Taiki Yamaguchi.

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This commit is contained in:
Tom Lane 2006-08-21 16:23:46 +00:00
parent 35af5422f6
commit 548237fc84
1 changed files with 1 additions and 14 deletions
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15
doc/src/sgml/datatype.sgml
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@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/datatype.sgml,v 1.170 2006/08/21 00:57:23 tgl Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/datatype.sgml,v 1.171 2006/08/21 16:23:46 tgl Exp $ -->
<chapter id="datatype">
<title id="datatype-title">Data Types</title>
@ -2294,19 +2294,6 @@ SELECT * FROM test1 WHERE a;
<literal>t</literal> and <literal>f</literal>.
</para>
<tip>
<para>
Values of the <type>boolean</type> type cannot be cast directly
to other types (e.g., <literal>CAST
(<replaceable>boolval</replaceable> AS integer)</literal> does
not work). This can be accomplished using the
<literal>CASE</literal> expression: <literal>CASE WHEN
<replaceable>boolval</replaceable> THEN 'value if true' ELSE
'value if false' END</literal>. See <xref
linkend="functions-conditional">.
</para>
</tip>
<para>
<type>boolean</type> uses 1 byte of storage.
</para>