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Include new cidr and inet data types.

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This commit is contained in:
Thomas G. Lockhart
1998-10-27 06:14:41 +00:00
parent 866104b3df
commit e9f10b22f4
3 changed files with 391 additions and 25 deletions
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171
doc/src/sgml/oper.sgml
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@@ -32,6 +32,25 @@ oprleft|oprright|oprresult|oprcode
</ProgramListing>
</Para>
<Para>
Users may invoke operators using the operator name, as in:
<ProgramListing>
select * from emp where salary < 40000;
</ProgramListing>
Alternatively, users may call the functions that implement the
operators directly. In this case, the query above would be expressed
as:
<ProgramListing>
select * from emp where int4lt(salary, 40000);
</ProgramListing>
<Para>
<Application>psql</Application>
has a command (<Command>\dd</Command>) to show these operators.
<sect1>
<title>Lexical Precedence</title>
@@ -633,23 +652,149 @@ are several operators for this type.
</TABLE>
</Para>
<Sect1>
<title id="cidr-opers">IP V4 Operators</title>
<Para>
Users may invoke operators using the operator name, as in:
<TABLE TOCENTRY="1">
<TITLE><ProductName>Postgres</ProductName>IP V4 Operators</TITLE>
<TITLEABBREV>Operators</TITLEABBREV>
<TGROUP COLS="3">
<THEAD>
<ROW>
<ENTRY>Operator</ENTRY>
<ENTRY>Description</ENTRY>
<ENTRY>Usage</ENTRY>
</ROW>
</THEAD>
<TBODY>
<ROW>
<ENTRY> &lt; </ENTRY>
<ENTRY>Less than</ENTRY>
<ENTRY>'192.168.1.5'::cidr &lt; '192.168.1.6'::cidr</ENTRY>
</ROW>
<ROW>
<ENTRY> &lt;= </ENTRY>
<ENTRY>Less than or equal</ENTRY>
<ENTRY>'192.168.1.5'::cidr &lt;= '192.168.1.5'::cidr</ENTRY>
</ROW>
<ROW>
<ENTRY> = </ENTRY>
<ENTRY>Equals</ENTRY>
<ENTRY>'192.168.1.5'::cidr = '192.168.1.5'::cidr</ENTRY>
</ROW>
<ROW>
<ENTRY> %gt;= </ENTRY>
<ENTRY>Greater or equal</ENTRY>
<ENTRY>'192.168.1.5'::cidr &gt;= '192.168.1.5'::cidr</ENTRY>
</ROW>
<ROW>
<ENTRY> %gt; </ENTRY>
<ENTRY>Greater</ENTRY>
<ENTRY>'192.168.1.5'::cidr %gt; '192.168.1.4'::cidr</ENTRY>
</ROW>
<ROW>
<ENTRY> &lt;&gt; </ENTRY>
<ENTRY>Not equal</ENTRY>
<ENTRY>'192.168.1.5'::cidr &lt;&gt; '192.168.1.4'::cidr</ENTRY>
</ROW>
<ROW>
<ENTRY> &lt;&lt; </ENTRY>
<ENTRY>is contained within</ENTRY>
<ENTRY>'192.168.1.5'::cidr &lt;&lt; '192.168.1/24'::cidr</ENTRY>
</ROW>
<ROW>
<ENTRY> &lt;&lt;= </ENTRY>
<ENTRY>is contained within or equals</ENTRY>
<ENTRY>'192.168.1/24'::cidr &lt;&lt;= '192.168.1/24'::cidr</ENTRY>
</ROW>
<ROW>
<ENTRY> &gt;&gt; </ENTRY>
<ENTRY>contains</ENTRY>
<ENTRY>'192.168.1/24'::cidr &gt;&gt; '192.168.1.5'::cidr</ENTRY>
</ROW>
<ROW>
<ENTRY> &gt;&gt;= </ENTRY>
<ENTRY>contains or equals</ENTRY>
<ENTRY>'192.168.1/24'::cidr &gt;&gt;= '192.168.1/24'::cidr</ENTRY>
</ROW>
</TBODY>
</TGROUP>
</TABLE>
</Para>
</Sect1>
<ProgramListing>
select * from emp where salary < 40000;
</ProgramListing>
Alternatively, users may call the functions that implement the
operators directly. In this case, the query above would be expressed
as:
<ProgramListing>
select * from emp where int4lt(salary, 40000);
</ProgramListing>
<Sect1>
<title id="inet-opers">IP V4 Operators</title>
<Para>
<Application>psql</Application>
has a command (<Command>\dd</Command>) to show these operators.
<TABLE TOCENTRY="1">
<TITLE><ProductName>Postgres</ProductName>IP V4 Operators</TITLE>
<TITLEABBREV>Operators</TITLEABBREV>
<TGROUP COLS="3">
<THEAD>
<ROW>
<ENTRY>Operator</ENTRY>
<ENTRY>Description</ENTRY>
<ENTRY>Usage</ENTRY>
</ROW>
</THEAD>
<TBODY>
<ROW>
<ENTRY> &lt; </ENTRY>
<ENTRY>Less than</ENTRY>
<ENTRY>'192.168.1.5'::inet &lt; '192.168.1.6'::inet</ENTRY>
</ROW>
<ROW>
<ENTRY> &lt;= </ENTRY>
<ENTRY>Less than or equal</ENTRY>
<ENTRY>'192.168.1.5'::inet &lt;= '192.168.1.5'::inet</ENTRY>
</ROW>
<ROW>
<ENTRY> = </ENTRY>
<ENTRY>Equals</ENTRY>
<ENTRY>'192.168.1.5'::inet = '192.168.1.5'::inet</ENTRY>
</ROW>
<ROW>
<ENTRY> %gt;= </ENTRY>
<ENTRY>Greater or equal</ENTRY>
<ENTRY>'192.168.1.5'::inet &gt;= '192.168.1.5'::inet</ENTRY>
</ROW>
<ROW>
<ENTRY> %gt; </ENTRY>
<ENTRY>Greater</ENTRY>
<ENTRY>'192.168.1.5'::inet %gt; '192.168.1.4'::inet</ENTRY>
</ROW>
<ROW>
<ENTRY> &lt;&gt; </ENTRY>
<ENTRY>Not equal</ENTRY>
<ENTRY>'192.168.1.5'::inet &lt;&gt; '192.168.1.4'::inet</ENTRY>
</ROW>
<ROW>
<ENTRY> &lt;&lt; </ENTRY>
<ENTRY>is contained within</ENTRY>
<ENTRY>'192.168.1.5'::inet &lt;&lt; '192.168.1/24'::inet</ENTRY>
</ROW>
<ROW>
<ENTRY> &lt;&lt;= </ENTRY>
<ENTRY>is contained within or equals</ENTRY>
<ENTRY>'192.168.1/24'::inet &lt;&lt;= '192.168.1/24'::inet</ENTRY>
</ROW>
<ROW>
<ENTRY> &gt;&gt; </ENTRY>
<ENTRY>contains</ENTRY>
<ENTRY>'192.168.1/24'::inet &gt;&gt; '192.168.1.5'::inet</ENTRY>
</ROW>
<ROW>
<ENTRY> &gt;&gt;= </ENTRY>
<ENTRY>contains or equals</ENTRY>
<ENTRY>'192.168.1/24'::inet &gt;&gt;= '192.168.1/24'::inet</ENTRY>
</ROW>
</TBODY>
</TGROUP>
</TABLE>
</Para>
</Sect1>
</Chapter>