<returnvalue>anyelement</returnvalue>
       </para>
       <para>
        Replaces fields in the left operand (which must be a composite type)
        with matching values from <type>hstore</type>.
       </para>
       <para>
        <literal>ROW(1,3) #= 'f1=>11'::hstore</literal>
        <returnvalue>(11,3)</returnvalue>
       </para></entry>
      </row>

      <row>
       <entry role="func_table_entry"><para role="func_signature">
        <literal>%%</literal> <type>hstore</type>
        <returnvalue>text[]</returnvalue>
       </para>
       <para>
        Converts <type>hstore</type> to an array of alternating keys and
        values.
       </para>
       <para>
        <literal>%% 'a=&gt;foo, b=&gt;bar'::hstore</literal>
        <returnvalue>{a,foo,b,bar}</returnvalue>
       </para></entry>
      </row>

      <row>
       <entry role="func_table_entry"><para role="func_signature">
        <literal>%#</literal> <type>hstore</type>
        <returnvalue>text[]</returnvalue>
       </para>
       <para>
        Converts <type>hstore</type> to a two-dimensional key/value array.
       </para>
       <para>
        <literal>%# 'a=&gt;foo, b=&gt;bar'::hstore</literal>
        <returnvalue>{{a,foo},{b,bar}}</returnvalue>
       </para></entry>
      </row>
     </tbody>
    </tgroup>
  </table>

  <table id="hstore-func-table">
   <title><type>hstore</type> Functions</title>
    <tgroup cols="1">
     <thead>
      <row>
       <entry role="func_table_entry"><para role="func_signature">
        Function
       </para>
       <para>
        Description
       </para>
       <para>
        Example(s)
       </para></entry>
      </row>
     </thead>

     <tbody>
      <row>
       <entry role="func_table_entry"><para role="func_signature">
        <indexterm><primary>hstore</primary></indexterm>
        <function>hstore</function> ( <type>record</type> )
        <returnvalue>hstore</returnvalue>
       </para>
       <para>
        Constructs an <type>hstore</type> from a record or row.
       </para>
       <para>
        <literal>hstore(ROW(1,2))</literal>
        <returnvalue>"f1"=&gt;"1", "f2"=&gt;"2"</returnvalue>
       </para></entry>
      </row>

      <row>
       <entry role="func_table_entry"><para role="func_signature">
        <function>hstore</function> ( <type>text[]</type> )
        <returnvalue>hstore</returnvalue>
       </para>
       <para>
        Constructs an <type>hstore</type> from an array, which may be either
        a key/value array, or a two-dimensional array.
       </para>
       <para>
        <literal>hstore(ARRAY['a','1','b','2'])</literal>
        <returnvalue>"a"=&gt;"1", "b"=&gt;"2"</returnvalue>
       </para>
       <para>
        <literal>hstore(ARRAY[['c','3'],['d','4']])</literal>
        <returnvalue>"c"=&gt;"3", "d"=&gt;"4"</returnvalue>
       </para></entry>
      </row>

      <row>
       <entry role="func_table_entry"><para role="func_signature">
        <function>hstore</function> ( <type>text[]</type>, <type>text[]</type> )
        <returnvalue>hstore</returnvalue>
       </para>
       <para>
        Constructs an <type>hstore</type> from separate key and value arrays.
       </para>
       <para>
        <literal>hstore(ARRAY['a','b'], ARRAY['1','2'])</literal>
        <returnvalue>"a"=&gt;"1", "b"=&gt;"2"</returnvalue>
       </para></entry>
      </row>

      <row>
       <entry role="func_table_entry"><para role="func_signature">
        <function>hstore</function> ( <type>text</type>, <type>text</type> )
        <returnvalue>hstore</returnvalue>
       </para>
       <para>
        Makes a single-item <type>hstore</type>.
       </para>
       <para>
        <literal>hstore('a', 'b')</literal>
        <returnvalue>"a"=&gt;"b"</returnvalue>
       </para></entry>
      </row>

      <row>
       <entry role="func_table_entry"><para role="func_signature">
        <indexterm><primary>akeys</primary></indexterm>
        <function>akeys</function> ( <type>hstore</type>