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# Partial Index test
#
# Make sure that an update which moves a row out of a partial index
# is handled correctly. In early versions, an attempt at optimization
# broke this behavior, allowing anomalies.
#
# Any overlap between the transactions must cause a serialization failure.
setup
{
create table test_t (id integer, val1 text, val2 integer);
create index test_idx on test_t(id) where val2 = 1;
insert into test_t (select generate_series(0, 10000), 'a', 2);
insert into test_t (select generate_series(0, 10), 'a', 1);
}
teardown
{
DROP TABLE test_t;
}
session "s1"
setup { BEGIN ISOLATION LEVEL SERIALIZABLE; }
step "rxy1" { select * from test_t where val2 = 1; }
step "wx1" { update test_t set val2 = 2 where val2 = 1 and id = 10; }
step "c1" { COMMIT; }
session "s2"
setup { BEGIN ISOLATION LEVEL SERIALIZABLE; }
step "wy2" { update test_t set val2 = 2 where val2 = 1 and id = 9; }
step "rxy2" { select * from test_t where val2 = 1; }
step "c2" { COMMIT; }
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