Add support for range operators (#938)

test/fixtures/data.sql

@@ -246,8 +246,8 @@ INSERT INTO nullable_integer VALUES (NULL);
 --
 
 TRUNCATE TABLE tsearch CASCADE;
-INSERT INTO tsearch VALUES ('''bar'':2 ''foo'':1');
-INSERT INTO tsearch VALUES ('''baz'':1 ''qux'':2');
+INSERT INTO tsearch VALUES (to_tsvector('It''s kind of fun to do the impossible'));
+INSERT INTO tsearch VALUES (to_tsvector('But also fun to do what is possible'));
 
 
 --
@@ -315,6 +315,12 @@ INSERT INTO grandchild_entities VALUES (3, 'grandchild entity 3', 2, null, null,
 INSERT INTO grandchild_entities VALUES (4, '(grandchild,entity,4)', 2, null, null, '{"a": {"b":"foo"}}');
 INSERT INTO grandchild_entities VALUES (5, '(grandchild,entity,5)', 2, null, null, '{"b":"bar"}');
 
+TRUNCATE TABLE ranges CASCADE;
+INSERT INTO ranges VALUES (1, '[1,3]');
+INSERT INTO ranges VALUES (2, '[3,6]');
+INSERT INTO ranges VALUES (3, '[6,9]');
+INSERT INTO ranges VALUES (4, '[9,12]');
+
 --
 -- PostgreSQL database dump complete
 --

test/fixtures/privileges.sql

@@ -56,6 +56,7 @@ GRANT ALL ON TABLE
     , entities
     , child_entities
     , grandchild_entities
+    , ranges
 TO postgrest_test_anonymous;
 
 GRANT INSERT ON TABLE insertonly TO postgrest_test_anonymous;

test/fixtures/schema.sql

@@ -1214,6 +1214,14 @@ create table grandchild_entities (
   jsonb_col jsonb
 );
 
+-- Table used for testing range operators
+
+create table ranges (
+    id integer primary key,
+    range numrange
+);
+
+
 -- OpenAPI description tests
 
 comment on table child_entities is 'child_entities comment';