1set enable_seqscan=off;
2
3CREATE TABLE test_char (
4	i "char"
5);
6
7INSERT INTO test_char VALUES ('a'),('b'),('c'),('d'),('e'),('f');
8
9CREATE INDEX idx_char ON test_char USING gin (i);
10
11SELECT * FROM test_char WHERE i<'d'::"char" ORDER BY i;
12SELECT * FROM test_char WHERE i<='d'::"char" ORDER BY i;
13SELECT * FROM test_char WHERE i='d'::"char" ORDER BY i;
14SELECT * FROM test_char WHERE i>='d'::"char" ORDER BY i;
15SELECT * FROM test_char WHERE i>'d'::"char" ORDER BY i;
16