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There is what may actually be a mistake in our markup. The problem is in a situation like <para> <command>FOO</command> is ... there is strictly speaking a line break before "FOO". In the HTML output, this does not appear to be a problem, but in the man page output, this shows up, so you get double blank lines at odd places. So far, we have attempted to work around this with an XSL hack, but that causes other problems, such as creating run-ins in places like <acronym>SQL</acronym> <command>COPY</command> So fix the problem properly by removing the extra whitespace. I only fixed the problems that affect the man page output, not all the places.
115 lines
2.5 KiB
Plaintext
115 lines
2.5 KiB
Plaintext
<!-- doc/src/sgml/ref/drop_cast.sgml -->
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<refentry id="SQL-DROPCAST">
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<refmeta>
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<refentrytitle>DROP CAST</refentrytitle>
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<manvolnum>7</manvolnum>
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<refmiscinfo>SQL - Language Statements</refmiscinfo>
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</refmeta>
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<refnamediv>
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<refname>DROP CAST</refname>
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<refpurpose>remove a cast</refpurpose>
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</refnamediv>
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<indexterm zone="sql-dropcast">
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<primary>DROP CAST</primary>
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</indexterm>
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<refsynopsisdiv>
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<synopsis>
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DROP CAST [ IF EXISTS ] (<replaceable>source_type</replaceable> AS <replaceable>target_type</replaceable>) [ CASCADE | RESTRICT ]
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</synopsis>
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</refsynopsisdiv>
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<refsect1 id="sql-dropcast-description">
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<title>Description</title>
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<para>
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<command>DROP CAST</command> removes a previously defined cast.
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</para>
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<para>
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To be able to drop a cast, you must own the source or the target
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data type. These are the same privileges that are required to
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create a cast.
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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><literal>IF EXISTS</literal></term>
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<listitem>
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<para>
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Do not throw an error if the cast does not exist. A notice is issued
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in this case.
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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>source_type</replaceable></term>
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<listitem>
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<para>
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The name of the source data type of the cast.
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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>target_type</replaceable></term>
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<listitem>
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<para>
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The name of the target data type of the cast.
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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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<term><literal>RESTRICT</literal></term>
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<listitem>
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<para>
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These key words do not have any effect, since there are no
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dependencies on casts.
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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="sql-dropcast-examples">
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<title>Examples</title>
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<para>
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To drop the cast from type <type>text</type> to type <type>int</type>:
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<programlisting>
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DROP CAST (text AS int);
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</programlisting></para>
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</refsect1>
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<refsect1 id="sql-dropcast-compat">
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<title>Compatibility</title>
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<para>
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The <command>DROP CAST</command> command conforms to 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-createcast"></member>
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</simplelist>
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</refsect1>
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</refentry>
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