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diff --git a/doc/src/sgml/array.sgml b/doc/src/sgml/array.sgml
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--- a/doc/src/sgml/array.sgml
+++ b/doc/src/sgml/array.sgml
@@ -573,6 +573,20 @@ SELECT * FROM
This function is described in <xref linkend="functions-srf-subscripts">.
</para>
+ <para>
+ You can also search an array using the <literal>&amp;&amp;</> operator,
+ which checks whether the left operand overlaps with the right operand.
+ For instance:
+
+<programlisting>
+SELECT * FROM sal_emp WHERE pay_by_quarter && ARRAY[10000];
+</programlisting>
+
+ This and other array operators are further described in
+ <xref linkend="functions-array">. It can be accelerated by an appropriate
+ index, as described in <xref linkend="indexes-types">.
+ </para>
+
<tip>
<para>
Arrays are not sets; searching for specific array elements