CREATE EXTENSION IF NOT EXISTS pg_plan_tree_dot; CREATE TABLE employee ( ID int, name varchar(10), salary real, start_date date, city varchar(10), region char(1)); INSERT INTO employee VALUES (1, 'Jason', 40420, '94/02/01', 'New York', 'W'); INSERT INTO employee VALUES (2, 'Robert',14420, '95/01/02', 'Vancouver','N'); INSERT INTO employee VALUES (3, 'Celia', 24020, '96/12/03', 'Toronto', 'W'); INSERT INTO employee VALUES (4, 'Linda', 40620, '87/11/04', 'New York', 'N'); INSERT INTO employee VALUES (5, 'David', 80026, '98/10/05', 'Vancouver','W'); INSERT INTO employee VALUES (6, 'James', 70060, '99/09/06', 'Toronto', 'N'); INSERT INTO employee VALUES (7, 'Alison',90620, '00/08/07', 'New York', 'W'); INSERT INTO employee VALUES (8, 'Chris', 26020, '01/07/08', 'Vancouver','N'); INSERT INTO employee VALUES (9, 'Mary', 60020, '02/06/09', 'Toronto', 'W'); CREATE INDEX idx ON employee (name, city, region); SET enable_seqscan = off; --- SELECT * FROM employee WHERE ID > 2 AND (name, city, region) IN (('Robert', 'New York', 'W'), ('Linda', 'New York', 'N'), ('Mary', 'Toronto', 'W')); SELECT generate_plan_tree_dot('SELECT * FROM employee WHERE ID > 2 AND (name, city, region) IN ((''Robert'', ''New York'', ''W''), (''Linda'', ''New York'', ''N''), (''Mary'', ''Toronto'', ''W''));', 'sample-bitmapor.dot'); DROP TABLE employee;