Rename hstore => text[] operator to %

This is not yet in any released version, so we still have the option to
change the name.  We may want to reserve the token => in a future release.

contrib/hstore/expected/hstore.out

@@ -757,39 +757,39 @@ select pg_column_size('a=>g, b=>c'::hstore || ('b'=>'gf'))
  t
 (1 row)
 
--- => arrays
-select hstore 'aa=>1, b=>2, c=>3' => ARRAY['g','h','i'];
+-- %
+select hstore 'aa=>1, b=>2, c=>3' % ARRAY['g','h','i'];
  ?column? 
 ----------
  
 (1 row)
 
-select hstore 'aa=>1, b=>2, c=>3' => ARRAY['c','b'];
+select hstore 'aa=>1, b=>2, c=>3' % ARRAY['c','b'];
       ?column?      
 --------------------
  "b"=>"2", "c"=>"3"
 (1 row)
 
-select hstore 'aa=>1, b=>2, c=>3' => ARRAY['aa','b'];
+select hstore 'aa=>1, b=>2, c=>3' % ARRAY['aa','b'];
       ?column?       
 ---------------------
  "b"=>"2", "aa"=>"1"
 (1 row)
 
-select hstore 'aa=>1, b=>2, c=>3' => ARRAY['c','b','aa'];
+select hstore 'aa=>1, b=>2, c=>3' % ARRAY['c','b','aa'];
            ?column?            
 -------------------------------
  "b"=>"2", "c"=>"3", "aa"=>"1"
 (1 row)
 
-select pg_column_size(hstore 'aa=>1, b=>2, c=>3' => ARRAY['c','b'])
+select pg_column_size(hstore 'aa=>1, b=>2, c=>3' % ARRAY['c','b'])
          = pg_column_size('b=>2, c=>3'::hstore);
  ?column? 
 ----------
  t
 (1 row)
 
-select pg_column_size(hstore 'aa=>1, b=>2, c=>3' => ARRAY['c','b','aa'])
+select pg_column_size(hstore 'aa=>1, b=>2, c=>3' % ARRAY['c','b','aa'])
          = pg_column_size('aa=>1, b=>2, c=>3'::hstore);
  ?column? 
 ----------

contrib/hstore/hstore.sql.in

-/* $PostgreSQL: pgsql/contrib/hstore/hstore.sql.in,v 1.13 2010/06/15 19:48:30 rhaas Exp $ */
+/* $PostgreSQL: pgsql/contrib/hstore/hstore.sql.in,v 1.14 2010/06/18 03:52:02 rhaas Exp $ */
 
 -- Adjust this setting to control where the objects get created.
 SET search_path = public;
@@ -66,7 +66,7 @@ RETURNS hstore
 AS 'MODULE_PATHNAME','hstore_slice_to_hstore'
 LANGUAGE C STRICT IMMUTABLE;
 
-CREATE OPERATOR => (
+CREATE OPERATOR % (
 	LEFTARG = hstore,
 	RIGHTARG = text[],
 	PROCEDURE = slice_hstore

contrib/hstore/sql/hstore.sql

@@ -171,14 +171,14 @@ select pg_column_size(('b'=>'gf'))
 select pg_column_size('a=>g, b=>c'::hstore || ('b'=>'gf'))
          = pg_column_size('a=>g, b=>gf'::hstore);
 
--- => arrays
-select hstore 'aa=>1, b=>2, c=>3' => ARRAY['g','h','i'];
-select hstore 'aa=>1, b=>2, c=>3' => ARRAY['c','b'];
-select hstore 'aa=>1, b=>2, c=>3' => ARRAY['aa','b'];
-select hstore 'aa=>1, b=>2, c=>3' => ARRAY['c','b','aa'];
-select pg_column_size(hstore 'aa=>1, b=>2, c=>3' => ARRAY['c','b'])
+-- %
+select hstore 'aa=>1, b=>2, c=>3' % ARRAY['g','h','i'];
+select hstore 'aa=>1, b=>2, c=>3' % ARRAY['c','b'];
+select hstore 'aa=>1, b=>2, c=>3' % ARRAY['aa','b'];
+select hstore 'aa=>1, b=>2, c=>3' % ARRAY['c','b','aa'];
+select pg_column_size(hstore 'aa=>1, b=>2, c=>3' % ARRAY['c','b'])
          = pg_column_size('b=>2, c=>3'::hstore);
-select pg_column_size(hstore 'aa=>1, b=>2, c=>3' => ARRAY['c','b','aa'])
+select pg_column_size(hstore 'aa=>1, b=>2, c=>3' % ARRAY['c','b','aa'])
          = pg_column_size('aa=>1, b=>2, c=>3'::hstore);
 
 -- array input

contrib/hstore/uninstall_hstore.sql

-/* $PostgreSQL: pgsql/contrib/hstore/uninstall_hstore.sql,v 1.9 2009/09/30 19:50:22 tgl Exp $ */
+/* $PostgreSQL: pgsql/contrib/hstore/uninstall_hstore.sql,v 1.10 2010/06/18 03:52:02 rhaas Exp $ */
 
 -- Adjust this setting to control where the objects get dropped.
 SET search_path = public;
@@ -22,8 +22,7 @@ DROP OPERATOR <@ ( hstore, hstore );
 DROP OPERATOR @  ( hstore, hstore );
 DROP OPERATOR ~  ( hstore, hstore );
 DROP OPERATOR => ( text, text );
-DROP OPERATOR => ( text[], text[] );
-DROP OPERATOR => ( hstore, text[] );
+DROP OPERATOR % ( hstore, text[] );
 DROP OPERATOR #= ( anyelement, hstore );
 DROP OPERATOR %% ( NONE, hstore );
 DROP OPERATOR %# ( NONE, hstore );

doc/src/sgml/hstore.sgml

-<!-- $PostgreSQL: pgsql/doc/src/sgml/hstore.sgml,v 1.9 2010/06/15 19:48:30 rhaas Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/hstore.sgml,v 1.10 2010/06/18 03:52:03 rhaas Exp $ -->
 
 <sect1 id="hstore">
  <title>hstore</title>
@@ -121,9 +121,9 @@
      </row>
 
      <row>
-      <entry><type>hstore</> <literal>=&gt;</> <type>text[]</></entry>
+      <entry><type>hstore</> <literal>%</> <type>text[]</></entry>
       <entry>extract a subset of an <type>hstore</></entry>
-      <entry><literal>'a=&gt;1,b=&gt;2,c=&gt;3'::hstore =&gt; ARRAY['b','c','x']</literal></entry>
+      <entry><literal>'a=&gt;1,b=&gt;2,c=&gt;3'::hstore % ARRAY['b','c','x']</literal></entry>
       <entry><literal>"b"=&gt;"2", "c"=&gt;"3"</literal></entry>
      </row>