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Last round of reference page editing.
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Peter Eisentraut
@@ -1,5 +1,5 @@
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<!--
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$Header: /cvsroot/pgsql/doc/src/sgml/ref/drop_operator.sgml,v 1.18 2002/07/29 22:14:10 tgl Exp $
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$Header: /cvsroot/pgsql/doc/src/sgml/ref/drop_operator.sgml,v 1.19 2003/05/04 02:23:16 petere Exp $
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PostgreSQL documentation
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-->
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@@ -8,216 +8,169 @@ PostgreSQL documentation
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<refentrytitle id="SQL-DROPOPERATOR-TITLE">DROP OPERATOR</refentrytitle>
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<refmiscinfo>SQL - Language Statements</refmiscinfo>
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</refmeta>
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<refnamediv>
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<refname>
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DROP OPERATOR
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</refname>
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<refpurpose>
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remove a user-defined operator
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</refpurpose>
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<refname>DROP OPERATOR</refname>
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<refpurpose>remove a user-defined operator</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<refsynopsisdivinfo>
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<date>1999-07-20</date>
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</refsynopsisdivinfo>
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<synopsis>
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DROP OPERATOR <replaceable class="PARAMETER">id</replaceable> ( <replaceable class="PARAMETER">lefttype</replaceable> | NONE , <replaceable class="PARAMETER">righttype</replaceable> | NONE ) [ CASCADE | RESTRICT ]
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</synopsis>
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<refsect2 id="R2-SQL-DROPOPERATOR-1">
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<refsect2info>
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<date>1998-09-22</date>
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</refsect2info>
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<title>
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Inputs
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</title>
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<para>
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<variablelist>
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<varlistentry>
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<term><replaceable class="parameter">id</replaceable></term>
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<listitem>
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<para>
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The identifier (optionally schema-qualified) of an existing operator.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><replaceable class="parameter">lefttype</replaceable></term>
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<listitem>
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<para>
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The type of the operator's left argument; write <literal>NONE</literal> if the
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operator has no left argument.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><replaceable class="parameter">righttype</replaceable></term>
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<listitem>
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<para>
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The type of the operator's right argument; write <literal>NONE</literal> if the
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operator has no right argument.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>CASCADE</term>
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<listitem>
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<para>
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Automatically drop objects that depend on the operator.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>RESTRICT</term>
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<listitem>
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<para>
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Refuse to drop the operator if there are any dependent objects.
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This is the default.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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</refsect2>
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<refsect2 id="R2-SQL-DROPOPERATOR-2">
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<refsect2info>
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<date>1998-09-22</date>
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</refsect2info>
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<title>
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Outputs
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</title>
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<para>
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<variablelist>
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<varlistentry>
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<term><computeroutput>
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DROP OPERATOR
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</computeroutput></term>
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<listitem>
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<para>
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The message returned if the command is successful.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><computeroutput>
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ERROR: RemoveOperator: binary operator '<replaceable class="PARAMETER">oper</replaceable>' taking '<replaceable class="PARAMETER">lefttype</replaceable>' and '<replaceable class="PARAMETER">righttype</replaceable>' does not exist
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</computeroutput></term>
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<listitem>
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<para>
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This message occurs if the specified binary operator does not exist.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><computeroutput>
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ERROR: RemoveOperator: left unary operator '<replaceable class="PARAMETER">oper</replaceable>' taking '<replaceable class="PARAMETER">lefttype</replaceable>' does not exist
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</computeroutput></term>
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<listitem>
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<para>
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This message occurs if the left unary operator
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specified does not exist.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><computeroutput>
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ERROR: RemoveOperator: right unary operator '<replaceable class="PARAMETER">oper</replaceable>' taking '<replaceable class="PARAMETER">righttype</replaceable>' does not exist
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</computeroutput></term>
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<listitem>
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<para>
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This message occurs if the right unary operator
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specified does not exist.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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</refsect2>
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<synopsis>
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DROP OPERATOR <replaceable class="PARAMETER">name</replaceable> ( <replaceable class="PARAMETER">lefttype</replaceable> | NONE , <replaceable class="PARAMETER">righttype</replaceable> | NONE ) [ CASCADE | RESTRICT ]
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</synopsis>
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</refsynopsisdiv>
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<refsect1 id="R1-SQL-DROPOPERATOR-1">
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<refsect1info>
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<date>1998-09-22</date>
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</refsect1info>
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<title>
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Description
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</title>
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<para>
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<command>DROP OPERATOR</command> drops an existing operator from the
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database.
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To execute this command you must be the owner of the operator.
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</para>
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<para>
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The left or right type of a left or right unary
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operator, respectively, must be specified as <literal>NONE</literal>.
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</para>
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<refsect1>
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<title>Description</title>
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<refsect2 id="R2-SQL-DROPOPERATOR-3">
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<refsect2info>
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<date>1998-09-22</date>
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</refsect2info>
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<title>
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Notes
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</title>
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<para>
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The <command>DROP OPERATOR</command> statement is a
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<productname>PostgreSQL</productname>
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language extension.
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</para>
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<para>
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Refer to
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<xref linkend="sql-createoperator" endterm="sql-createoperator-title">
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for information on how to create operators.
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</para>
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</refsect2>
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<para>
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<command>DROP OPERATOR</command> drops an existing operator from
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the database system. To execute this command you must be the owner
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of the operator.
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</para>
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</refsect1>
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<refsect1>
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<title>Parameters</title>
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<variablelist>
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<varlistentry>
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<term><replaceable class="parameter">name</replaceable></term>
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<listitem>
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<para>
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The name (optionally schema-qualified) of an existing operator.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><replaceable class="parameter">lefttype</replaceable></term>
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<listitem>
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<para>
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The data type of the operator's left operand; write
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<literal>NONE</literal> if the operator has no left operand.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><replaceable class="parameter">righttype</replaceable></term>
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<listitem>
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<para>
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The data type of the operator's right operand; write
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<literal>NONE</literal> if the operator has no right operand.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><literal>CASCADE</literal></term>
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<listitem>
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<para>
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Automatically drop objects that depend on the operator.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><literal>RESTRICT</literal></term>
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<listitem>
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<para>
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Refuse to drop the operator if any objects depend on it. This
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is the default.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1 id="R1-SQL-DROPOPERATOR-2">
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<title>
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Usage
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</title>
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<para>
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Remove power operator <literal>a^n</literal> for <literal>int4</literal>:
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<refsect1>
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<title>Diagnostics</title>
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<variablelist>
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<varlistentry>
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<term><computeroutput>DROP OPERATOR</computeroutput></term>
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<listitem>
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<para>
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Message returned if the command was successful.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><computeroutput>ERROR: RemoveOperator: binary operator '<replaceable class="PARAMETER">name</replaceable>' taking '<replaceable class="PARAMETER">lefttype</replaceable>' and '<replaceable class="PARAMETER">righttype</replaceable>' does not exist</computeroutput></term>
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<listitem>
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<para>
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This message is returned if the specified binary operator does not exist.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><computeroutput>ERROR: RemoveOperator: left unary operator '<replaceable class="PARAMETER">name</replaceable>' taking '<replaceable class="PARAMETER">lefttype</replaceable>' does not exist</computeroutput></term>
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<listitem>
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<para>
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This message is returned if the specified left unary operator
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does not exist.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><computeroutput>ERROR: RemoveOperator: right unary operator '<replaceable class="PARAMETER">name</replaceable>' taking '<replaceable class="PARAMETER">righttype</replaceable>' does not exist</computeroutput></term>
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<listitem>
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<para>
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This message is returned if the specified right unary operator
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does not exist.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1>
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<title>Examples</title>
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<programlisting>
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DROP OPERATOR ^ (int4, int4);
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</programlisting>
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</para>
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<para>
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Remove left unary negation operator (<literal>! b</literal>) for <type>boolean</type>:
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<programlisting>
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DROP OPERATOR ! (none, bool);
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</programlisting>
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Remove the power operator <literal>a^b</literal> for type <type>integer</type>:
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<programlisting>
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DROP OPERATOR ^ (integer, integer);
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</programlisting>
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</para>
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<para>
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Remove right unary factorial operator (<literal>i !</literal>) for
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<literal>int4</literal>:
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<programlisting>
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DROP OPERATOR ! (int4, none);
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</programlisting>
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Remove the left unary bitwise complement operator
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<literal>~b</literal> for type <type>bit</type>:
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<programlisting>
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DROP OPERATOR ~ (none, bit);
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</programlisting>
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</para>
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<para>
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Remove the right unary factorial operator <literal>x!</literal>
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for type <type>integer</type>:
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<programlisting>
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DROP OPERATOR ! (integer, none);
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</programlisting>
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</para>
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</refsect1>
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<refsect1 id="R1-SQL-DROPOPERATOR-3">
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<title>
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Compatibility
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</title>
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<refsect1>
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<title>Compatibility</title>
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<refsect2 id="R2-SQL-DROPOPERATOR-4">
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<refsect2info>
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<date>1998-09-22</date>
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</refsect2info>
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<title>
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SQL92
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</title>
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<para>
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There is no <command>DROP OPERATOR</command> in <acronym>SQL92</acronym>.
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</para>
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</refsect2>
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<para>
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There is no <command>DROP OPERATOR</command> statement in the SQL standard.
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</para>
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</refsect1>
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<refsect1>
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<title>See Also</title>
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<simplelist type="inline">
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<member><xref linkend="sql-createoperator" endterm="sql-createoperator-title"></member>
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</simplelist>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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