granicus.if.org Git - postgresql/blob - doc/src/sgml/ref/reset.sgml

   1 <refentry id="SQL-RESET">
   2  <refmeta>
   3   <refentrytitle>
   4    RESET
   5   </refentrytitle>
   6   <refmiscinfo>SQL - Language Statements</refmiscinfo>
   7  </refmeta>
   8  <refnamediv>
   9   <refname>
  10    RESET
  11   </refname>
  12   <refpurpose>
  13    Restores run-time parameters for session to default values
  14   </refpurpose>
  15  </refnamediv>
  16  <refsynopsisdiv>
  17   <refsynopsisdivinfo>
  18    <date>1998-09-24</date>
  19   </refsynopsisdivinfo>
  20   <synopsis>
  21 RESET <replaceable class="PARAMETER">variable</replaceable>
  22   </synopsis>
  23
  24   <refsect2 id="R2-SQL-RESET-1">
  25    <refsect2info>
  26     <date>1998-09-24</date>
  27    </refsect2info>
  28    <title>
  29     Inputs
  30    </title>
  31    <para>
  32     <variablelist>
  33      <varlistentry>
  34       <term>
  35        <replaceable class="PARAMETER">variable</replaceable>
  36       </term>
  37       <listitem>
  38        <para>
  39         Refer to the SET statement for more information on available
  40         variables.
  41        </para>
  42       </listitem>
  43      </varlistentry>
  44     </variablelist>
  45    </para>
  46   </refsect2>
  47
  48   <refsect2 id="R2-SQL-RESET-2">
  49    <refsect2info>
  50     <date>1998-09-24</date>
  51    </refsect2info>
  52    <title>
  53     Outputs
  54    </title>
  55    <para>
  56
  57     <variablelist>
  58      <varlistentry>
  59       <term>
  60        RESET VARIABLE
  61       </term>
  62       <listitem>
  63        <para>
  64         Message returned if
  65         <replaceable class="PARAMETER">variable</replaceable> is successfully reset
  66         to its default value..
  67        </para>
  68       </listitem>
  69      </varlistentry>
  70     </variablelist>
  71    </para>
  72   </refsect2>
  73  </refsynopsisdiv>
  74
  75  <refsect1 id="R1-SQL-RESET-1">
  76   <refsect1info>
  77    <date>1998-09-24</date>
  78   </refsect1info>
  79   <title>
  80    Description
  81   </title>
  82   <para>
  83    <command>RESET</command> restores variables to the
  84    default values.
  85    Refer to the <command>SET</command> command for details on
  86    allowed values and defaults.
  87    <command>RESET</command> is an alternate form for
  88    <command>SET <replaceable class="parameter">variable</replaceable> = DEFAULT</command>
  89   </para>
  90
  91   <refsect2 id="R2-SQL-RESET-3">
  92    <refsect2info>
  93     <date>1998-09-24</date>
  94    </refsect2info>
  95    <title>
  96     Notes
  97    </title>
  98    <para>
  99     The RESET statement is a <productname>Postgres</productname>
 100     language extension.
 101    </para>
 102    <para>
 103     Refer to SET/SHOW statements to set/show variable values.
 104    </para>
 105   </refsect2>
 106  </refsect1>
 107
 108  <refsect1 id="R1-SQL-RESET-2">
 109   <title>
 110    Usage
 111   </title>
 112   <para>
 113    <programlisting>
 114 -- reset DateStyle to its default;
 115 RESET DateStyle;
 116    </programlisting>
 117    <programlisting>
 118 -- reset Geqo to its default;
 119 RESET GEQO;
 120    </programlisting>
 121   </para>
 122  </refsect1>
 123
 124  <refsect1 id="R1-SQL-RESET-3">
 125   <title>
 126    Compatibility
 127   </title>
 128
 129   <refsect2 id="R2-SQL-RESET-4">
 130    <refsect2info>
 131     <date>1998-09-24</date>
 132    </refsect2info>
 133    <title>
 134     SQL92
 135    </title>
 136    <para>
 137     There is no <command>RESET</command> in <acronym>SQL92</acronym>.
 138    </para>
 139   </refsect2>
 140  </refsect1>
 141 </refentry>
 142
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