</para></entry>
      </row>

      <row>
       <entry role="func_table_entry"><para role="func_signature">
        <type>hstore</type> <literal>?|</literal> <type>text[]</type>
        <returnvalue>boolean</returnvalue>
       </para>
       <para>
        Does <type>hstore</type> contain any of the specified keys?
       </para>
       <para>
        <literal>'a=&gt;1,b=&gt;2'::hstore ?| ARRAY['b','c']</literal>
        <returnvalue>t</returnvalue>
       </para></entry>
      </row>

      <row>
       <entry role="func_table_entry"><para role="func_signature">
        <type>hstore</type> <literal>@&gt;</literal> <type>hstore</type>
        <returnvalue>boolean</returnvalue>
       </para>
       <para>
        Does left operand contain right?
       </para>
       <para>
        <literal>'a=&gt;b, b=&gt;1, c=&gt;NULL'::hstore @&gt; 'b=&gt;1'</literal>
        <returnvalue>t</returnvalue>
       </para></entry>
      </row>

      <row>
       <entry role="func_table_entry"><para role="func_signature">
        <type>hstore</type> <literal>&lt;@</literal> <type>hstore</type>
        <returnvalue>boolean</returnvalue>
       </para>
       <para>
        Is left operand contained in right?
       </para>
       <para>
        <literal>'a=&gt;c'::hstore &lt;@ 'a=&gt;b, b=&gt;1, c=&gt;NULL'</literal>
        <returnvalue>f</returnvalue>
       </para></entry>
      </row>

      <row>
       <entry role="func_table_entry"><para role="func_signature">
        <type>hstore</type> <literal>-</literal> <type>text</type>
        <returnvalue>hstore</returnvalue>
       </para>
       <para>
        Deletes key from left operand.
       </para>
       <para>
        <literal>'a=&gt;1, b=&gt;2, c=&gt;3'::hstore - 'b'::text</literal>
        <returnvalue>"a"=&gt;"1", "c"=&gt;"3"</returnvalue>
       </para></entry>
      </row>

      <row>
       <entry role="func_table_entry"><para role="func_signature">
        <type>hstore</type> <literal>-</literal> <type>text[]</type>
        <returnvalue>hstore</returnvalue>
       </para>
       <para>
        Deletes keys from left operand.
       </para>
       <para>
        <literal>'a=&gt;1, b=&gt;2, c=&gt;3'::hstore - ARRAY['a','b']</literal>
        <returnvalue>"c"=&gt;"3"</returnvalue>
       </para></entry>
      </row>

      <row>
       <entry role="func_table_entry"><para role="func_signature">
        <type>hstore</type> <literal>-</literal> <type>hstore</type>
        <returnvalue>hstore</returnvalue>
       </para>
       <para>
        Deletes pairs from left operand that match pairs in the right operand.
       </para>
       <para>
        <literal>'a=&gt;1, b=&gt;2, c=&gt;3'::hstore - 'a=&gt;4, b=&gt;2'::hstore</literal>
        <returnvalue>"a"=&gt;"1", "c"=&gt;"3"</returnvalue>
       </para></entry>
      </row>

      <row>
       <entry role="func_table_entry"><para role="func_signature">
        <type>anyelement</type> <literal>#=</literal> <type>hstore</type>
        <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>