hstore_90.patch

diff --git a/doc/src/sgml/hstore.sgml b/doc/src/sgml/hstore.sgml
index 76d876b..78c2e81 100644
--- a/doc/src/sgml/hstore.sgml
+++ b/doc/src/sgml/hstore.sgml
@@ -225,6 +225,14 @@
    </para>
   </note>
 
+  <note>
+  <para>
+   The <literal>=&gt;</> operator is deprecated and may be removed in a
+   future release.  The use of the <literal>hstore(text, text)</literal>
+   function is recommended as an alternative.
+   </para>
+  </note>
+
   <table id="hstore-func-table">
    <title><type>hstore</> Functions</title>
 
@@ -266,6 +274,14 @@
      </row>
 
      <row>
+      <entry><function>hstore(text, text)</function></entry>
+      <entry><type>hstore</type></entry>
+      <entry>make single-item <type>hstore</></entry>
+      <entry><literal>hstore('a', 'b')</literal></entry>
+      <entry><literal>"a"=&gt;"b"</literal></entry>
+     </row>
+
+     <row>
       <entry><function>akeys(hstore)</function></entry>
       <entry><type>text[]</type></entry>
       <entry>get <type>hstore</>'s keys as an array</entry>
diff --git a/src/backend/commands/operatorcmds.c b/src/backend/commands/operatorcmds.c
index 9c07cf3..c0dc7a2 100644
--- a/src/backend/commands/operatorcmds.c
+++ b/src/backend/commands/operatorcmds.c
@@ -88,6 +88,16 @@ DefineOperator(List *names, List *parameters)
 	/* Convert list of names to a name and namespace */
 	oprNamespace = QualifiedNameGetCreationNamespace(names, &oprName);
 
+	/*
+	 * The SQL standard committee has decided that => should be used for
+	 * named parameters; therefore, a future release of PostgreSQL may
+	 * disallow it as the name of a user-defined operator.
+	 */
+	if (strcmp(oprName, "=>") == 0)
+		ereport(WARNING,
+				(errmsg("=> is deprecated as an operator name"),
+				 errdetail("This name may be disallowed altogether in future versions of PostgreSQL.")));
+
 	/* Check we have creation rights in target namespace */
 	aclresult = pg_namespace_aclcheck(oprNamespace, GetUserId(), ACL_CREATE);
 	if (aclresult != ACLCHECK_OK)