CREATE EXTENSION rum;

CREATE TABLE tst (i int4, t tsvector);
INSERT INTO tst SELECT i%10, to_tsvector('simple', substr(md5(i::text), 1, 1)) FROM generate_series(1,100000) i;
CREATE INDEX tstidx ON tst USING rum (t rum_tsvector_ops);

DELETE FROM tst WHERE i = 1;
VACUUM tst;
INSERT INTO tst SELECT i%10, to_tsvector('simple', substr(md5(i::text), 1, 1)) FROM generate_series(10001,11000) i;

DELETE FROM tst WHERE i = 2;
VACUUM tst;
INSERT INTO tst SELECT i%10, to_tsvector('simple', substr(md5(i::text), 1, 1)) FROM generate_series(11001,12000) i;

DELETE FROM tst WHERE i = 3;
VACUUM tst;
INSERT INTO tst SELECT i%10, to_tsvector('simple', substr(md5(i::text), 1, 1)) FROM generate_series(12001,13000) i;

DELETE FROM tst WHERE i = 4;
VACUUM tst;
INSERT INTO tst SELECT i%10, to_tsvector('simple', substr(md5(i::text), 1, 1)) FROM generate_series(13001,14000) i;

DELETE FROM tst WHERE i = 5;
VACUUM tst;
INSERT INTO tst SELECT i%10, to_tsvector('simple', substr(md5(i::text), 1, 1)) FROM generate_series(14001,15000) i;

DELETE FROM tst WHERE i = 6;
VACUUM tst;
INSERT INTO tst SELECT i%10, to_tsvector('simple', substr(md5(i::text), 1, 1)) FROM generate_series(15001,16000) i;

DELETE FROM tst WHERE i = 7;
VACUUM tst;
INSERT INTO tst SELECT i%10, to_tsvector('simple', substr(md5(i::text), 1, 1)) FROM generate_series(16001,17000) i;

DELETE FROM tst WHERE i = 8;
VACUUM tst;
INSERT INTO tst SELECT i%10, to_tsvector('simple', substr(md5(i::text), 1, 1)) FROM generate_series(17001,18000) i;

DELETE FROM tst WHERE i = 9;
VACUUM tst;
INSERT INTO tst SELECT i%10, to_tsvector('simple', substr(md5(i::text), 1, 1)) FROM generate_series(18001,19000) i;

DROP TABLE tst;
DROP EXTENSION rum;