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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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