github.com/cockroachdb/cockroach@v20.2.0-alpha.1+incompatible/pkg/sql/logictest/testdata/logic_test/sequences

# LogicTest: !3node-tenant
# see also files `drop_sequence`, `alter_sequence`, `rename_sequence`

# USING THE `lastval` FUNCTION
# (at the top because it requires a session in which `lastval` has never been called)

statement ok
SET DATABASE = test

statement ok
CREATE SEQUENCE lastval_test

statement ok
CREATE SEQUENCE lastval_test_2 START WITH 10

statement error pgcode 55000 pq: lastval\(\): lastval is not yet defined in this session
SELECT lastval()

query I
SELECT nextval('lastval_test')
----
1

query I
SELECT lastval()
----
1

query I
SELECT nextval('lastval_test_2')
----
10

query I
SELECT lastval()
----
10

query I
SELECT nextval('lastval_test')
----
2

query I
SELECT lastval()
----
2

query I
SELECT nextval('lastval_test_2')
----
11

query I
SELECT lastval()
----
11

# SEQUENCE CREATION

statement ok
CREATE SEQUENCE foo

# A sequence with the same name can't be created again.
statement error pgcode 42P07 relation "foo" already exists
CREATE SEQUENCE foo

statement ok
CREATE SEQUENCE IF NOT EXISTS foo

statement error pgcode 42601 conflicting or redundant options
CREATE SEQUENCE bar INCREMENT 5 MAXVALUE 1000 INCREMENT 2

# Sequences are in the same namespace as tables.
statement error pgcode 42P07 relation "foo" already exists
CREATE TABLE foo (k BYTES PRIMARY KEY, v BYTES)

# You can't create with 0 increment.
statement error pgcode 22023 INCREMENT must not be zero
CREATE SEQUENCE zero_test INCREMENT 0

statement ok
CREATE SEQUENCE high_minvalue_test MINVALUE 5

# Test unimplemented syntax.
statement error at or near "EOF": syntax error: unimplemented
CREATE SEQUENCE err_test AS INT2

# Verify validation of START vs MINVALUE/MAXVALUE.

statement error pgcode 22023 START value \(11\) cannot be greater than MAXVALUE \(10\)
CREATE SEQUENCE limit_test MAXVALUE 10 START WITH 11

statement error pgcode 22023 START value \(5\) cannot be less than MINVALUE \(10\)
CREATE SEQUENCE limit_test MINVALUE 10 START WITH 5

statement error pgcode 22023 CACHE \(-1\) must be greater than zero
CREATE SEQUENCE cache_test CACHE -1

statement error pgcode 22023 CACHE \(0\) must be greater than zero
CREATE SEQUENCE cache_test CACHE 0

statement error pgcode 0A000 CACHE values larger than 1 are not supported, found 5
CREATE SEQUENCE cache_test CACHE 5

statement error pgcode 0A000 CYCLE option is not supported
CREATE SEQUENCE cycle_test CYCLE

statement ok
CREATE SEQUENCE ignored_options_test CACHE 1 NO CYCLE

# Verify presence in crdb_internal.create_statements.

statement ok
CREATE SEQUENCE show_create_test

query ITTITTTTTTTB colnames
SELECT * FROM crdb_internal.create_statements WHERE descriptor_name = 'show_create_test'
----
database_id  database_name  schema_name  descriptor_id  descriptor_type  descriptor_name   create_statement                                                                              state   create_nofks                                                                                  alter_statements  validate_statements  has_partitions
52           test           public       66             sequence         show_create_test  CREATE SEQUENCE show_create_test MINVALUE 1 MAXVALUE 9223372036854775807 INCREMENT 1 START 1  PUBLIC  CREATE SEQUENCE show_create_test MINVALUE 1 MAXVALUE 9223372036854775807 INCREMENT 1 START 1  {}                {}                  false

query TT colnames
SHOW CREATE SEQUENCE show_create_test
----
table_name        create_statement
show_create_test  CREATE SEQUENCE show_create_test MINVALUE 1 MAXVALUE 9223372036854775807 INCREMENT 1 START 1

# DML ERRORS

statement error pgcode 42809 "foo" is not a table
INSERT INTO foo VALUES (1, 2, 3)

statement error pgcode 42809 "foo" is not a table
UPDATE foo SET value = 5

statement error pgcode 42809 "foo" is not a table
DELETE FROM foo

statement error pgcode 42809 "foo" is not a table
TRUNCATE foo

# Drop table on sequences doesn't work; you have to use DROP SEQUENCE.
statement error pgcode 42809 "foo" is not a table
DROP TABLE foo

# List sequences with SHOW

query T
SHOW SEQUENCES
----
foo
high_minvalue_test
ignored_options_test
lastval_test
lastval_test_2
show_create_test

statement ok
CREATE DATABASE seqdb; USE seqdb; CREATE SEQUENCE otherseq; USE test

query T
SHOW SEQUENCES FROM seqdb
----
otherseq

# You can select from a sequence to get its value.

statement ok
CREATE SEQUENCE select_test

query IIB colnames
SELECT * FROM select_test
----
last_value log_cnt is_called
0          0       true

# Test selecting just last_value.
query I
SELECT last_value FROM select_test
----
0

statement ok
SELECT nextval('select_test')

query I
SELECT last_value FROM select_test
----
1

# Since this is a custom plan node, verify that column validation works.
statement error pq: column "foo" does not exist
SELECT foo from select_test

# USING THE `nextval` AND `currval` FUNCTIONS

statement error pgcode 55000 pq: currval\(\): currval of sequence "foo" is not yet defined in this session
SELECT currval('foo')

query I
SELECT nextval('foo')
----
1

query I
SELECT nextval('foo')
----
2

query I
SELECT currval('foo')
----
2

query T
SELECT pg_sequence_parameters('foo'::regclass::oid)
----
(1,1,9223372036854775807,1,f,1,20)

# You can create a sequence with different increment.

statement ok
CREATE SEQUENCE bar INCREMENT 5

query I
SELECT nextval('bar')
----
1

query I
SELECT nextval('bar')
----
6

query T
SELECT pg_sequence_parameters('bar'::regclass::oid)
----
(1,1,9223372036854775807,5,f,1,20)

# You can create a sequence with different start and increment.

statement ok
CREATE SEQUENCE baz START 2 INCREMENT 5

query I
SELECT nextval('baz')
----
2

query I
SELECT nextval('baz')
----
7

query T
SELECT pg_sequence_parameters('baz'::regclass::oid)
----
(2,1,9223372036854775807,5,f,1,20)

# You can create a sequence that goes down.

statement ok
CREATE SEQUENCE down_test INCREMENT BY -1 START -5

query I
SELECT nextval('down_test')
----
-5

query I
SELECT nextval('down_test')
----
-6

query T
SELECT pg_sequence_parameters('down_test'::regclass::oid)
----
(-5,-9223372036854775808,-1,-1,f,1,20)


# You can create and use a sequence with special characters.

statement ok
CREATE SEQUENCE spécial

query I
SELECT nextval('spécial')
----
1

# You can't call nextval on a table.

statement ok
CREATE TABLE kv (k bytes primary key, v bytes)

statement error pgcode 42809 "kv" is not a sequence
SELECT nextval('kv')

# Parse errors in the argument to nextval are handled.
statement error pq: nextval\(\): at or near "@": syntax error
SELECT nextval('@#%@!324234')

# You can create and find sequences from other databases.

statement ok
CREATE DATABASE other_db

statement ok
SET DATABASE = other_db

statement ok
CREATE SEQUENCE other_db_test

statement ok
SET DATABASE = test

# Sequence names are resolved based on the search path.

statement ok
CREATE DATABASE foo

statement ok
CREATE DATABASE bar

statement ok
CREATE SEQUENCE foo.x

statement ok
SET DATABASE = bar

query I
SELECT nextval('foo.x')
----
1

query I
SELECT nextval('other_db.other_db_test')
----
1

# USING THE `setval` FUNCTION

statement ok
SET DATABASE = test

statement ok
CREATE SEQUENCE setval_test

query I
SELECT nextval('setval_test')
----
1

query I
SELECT nextval('setval_test')
----
2

query I
SELECT setval('setval_test', 10)
----
10

# Calling setval doesn't affect currval or lastval; they return the last value obtained with nextval.
query I
SELECT currval('setval_test')
----
2

query I
SELECT lastval()
----
2

query I
SELECT nextval('setval_test')
----
11

query I
SELECT currval('setval_test')
----
11

query I
SELECT lastval()
----
11

# setval doesn't let you set values outside the bounds.

statement ok
CREATE SEQUENCE setval_bounds_test MINVALUE 5 MAXVALUE 10

query I
SELECT nextval('setval_bounds_test')
----
5

statement error pgcode 22003 pq: setval\(\): value 11 is out of bounds for sequence "setval_bounds_test" \(5\.\.10\)
SELECT setval('setval_bounds_test', 11)

statement error pgcode 22003 pq: setval\(\): value 0 is out of bounds for sequence "setval_bounds_test" \(5\.\.10\)
SELECT setval('setval_bounds_test', 0)

# nextval fails with nonexistent sequences.

statement error pgcode 42P01 relation "nonexistent_seq" does not exist
SELECT nextval('nonexistent_seq')

# The three-argument variant of setval lets you set the next value to be retrieved from nextval().

statement ok
CREATE SEQUENCE setval_is_called_test

query I
SELECT setval('setval_is_called_test', 10, false)
----
10

query I
SELECT nextval('setval_is_called_test')
----
10

query I
SELECT nextval('setval_is_called_test')
----
11

query I
SELECT setval('setval_is_called_test', 20, true)
----
20

query I
SELECT nextval('setval_is_called_test')
----
21

query I
SELECT nextval('setval_is_called_test')
----
22

# You can use setval to reset to minvalue.

statement ok
CREATE SEQUENCE setval_minval_test MINVALUE 10

query I
SELECT nextval('setval_minval_test')
----
10

query I
SELECT nextval('setval_minval_test')
----
11

query I
SELECT setval('setval_minval_test', 10, false)
----
10

query I
SELECT nextval('setval_minval_test')
----
10

query I
SELECT setval('setval_minval_test', 10, true)
----
10

query I
SELECT nextval('setval_minval_test')
----
11

# BEHAVIOR UPON HITTING LIMITS (minvalue, maxvalue)

statement ok
CREATE SEQUENCE limit_test MAXVALUE 10 START WITH 9

query I
SELECT nextval('limit_test')
----
9

query I
SELECT nextval('limit_test')
----
10

statement error pgcode 2200H pq: nextval\(\): reached maximum value of sequence "limit_test" \(10\)
SELECT nextval('limit_test')

query I
SELECT currval('limit_test')
----
10

statement ok
CREATE SEQUENCE downward_limit_test INCREMENT BY -1 MINVALUE -10 START WITH -10

query I
SELECT nextval('downward_limit_test')
----
-10

statement error pgcode 2200H pq: nextval\(\): reached minimum value of sequence "downward_limit_test" \(-10\)
SELECT nextval('downward_limit_test')

# Verify that it still works with integer overflows and underflows.

statement ok
CREATE SEQUENCE overflow_test START WITH 9223372036854775807

query I
SELECT nextval('overflow_test')
----
9223372036854775807

statement error pgcode 2200H pq: nextval\(\): reached maximum value of sequence "overflow_test" \(9223372036854775807\)
SELECT nextval('overflow_test')

statement ok
CREATE SEQUENCE underflow_test MINVALUE -9223372036854775808 START WITH -9223372036854775808 INCREMENT -1

query I
SELECT nextval('underflow_test')
----
-9223372036854775808

statement error pgcode 2200H pq: nextval\(\): reached minimum value of sequence "underflow_test" \(-9223372036854775808\)
SELECT nextval('underflow_test')

# USE WITH TABLES

# You can use a sequence in a DEFAULT expression to create an auto-incrementing primary key.

statement ok
CREATE SEQUENCE blog_posts_id_seq

statement ok
CREATE TABLE blog_posts (id INT PRIMARY KEY DEFAULT nextval('blog_posts_id_seq'), title text)

statement ok
INSERT INTO blog_posts (title) values ('foo')

statement ok
INSERT INTO blog_posts (title) values ('bar')

query I
SELECT id FROM blog_posts ORDER BY id
----
1
2

# USE WITH (DEPRECATED) PARALLEL STATEMENTS

# Both accesses to the sequence value in the KV layer and the sequenceState struct in
# the Session are serialized, so after the last parallel statement you'll get the last value.

statement ok
BEGIN

statement ok
INSERT INTO blog_posts (title) VALUES ('par_test_1') RETURNING NOTHING

statement ok
INSERT INTO blog_posts (title) VALUES ('par_test_2') RETURNING NOTHING

statement ok
INSERT INTO blog_posts (title) VALUES ('par_test_3') RETURNING NOTHING

query I
SELECT lastval()
----
5

statement ok
COMMIT

# BEHAVIOR WITH TRANSACTIONS

# Verify that sequence updates are not rolled back with their corresponding transactions, leaving a gap.

statement ok
CREATE SEQUENCE txn_test_seq;

statement ok
CREATE TABLE txn_test (id INT PRIMARY KEY DEFAULT nextval('txn_test_seq'), something text)

statement ok
INSERT INTO txn_test (something) VALUES ('foo')

statement ok
BEGIN

statement ok
INSERT INTO txn_test (something) VALUES ('bar')

statement ok
ROLLBACK

statement ok
INSERT INTO txn_test (something) VALUES ('baz')

query IT rowsort
SELECT * FROM txn_test
----
1 foo
3 baz

# PREVENTION OF DROPPING A SEQUENCE WHICH IS BEING USED

statement ok
CREATE SEQUENCE drop_prevention_test

statement ok
CREATE TABLE drop_prevention_test_tbl (id INT PRIMARY KEY DEFAULT nextval('drop_prevention_test'))

statement error pq: cannot drop sequence drop_prevention_test because other objects depend on it
DROP SEQUENCE drop_prevention_test

# Giving a nonexistent function doesn't mess up the nextval-detection algorithm.

statement error pq: unknown function: nxtvl()
CREATE TABLE seq_using_table (id INT PRIMARY KEY DEFAULT nxtvl('foo'))

# Sequence deletion is allowed once the sequence-using column is removed.

statement ok
CREATE SEQUENCE drop_col_test_seq

statement ok
CREATE TABLE drop_col_test_tbl (id INT PRIMARY KEY, foo INT DEFAULT nextval('drop_col_test_seq'))

statement ok
ALTER TABLE drop_col_test_tbl DROP COLUMN foo

statement ok
DROP SEQUENCE drop_col_test_seq

# Sequence deletion is prevented when a sequence-using column is added to a table.

statement ok
CREATE TABLE add_col_test_tbl (id INT PRIMARY KEY)

statement ok
CREATE SEQUENCE add_col_test_seq

statement ok
ALTER TABLE add_col_test_tbl ADD COLUMN foo INT DEFAULT nextval('add_col_test_seq')

statement error pq: cannot drop sequence add_col_test_seq because other objects depend on it
DROP SEQUENCE add_col_test_seq

# Sequence deletion is prevented when a column is altered to depend on the sequence.

statement ok
CREATE TABLE set_default_test_tbl (id INT PRIMARY KEY, foo INT)

statement ok
CREATE SEQUENCE set_default_test_seq

statement ok
ALTER TABLE set_default_test_tbl ALTER COLUMN foo SET DEFAULT nextval('set_default_test_seq')

statement error pq: cannot drop sequence set_default_test_seq because other objects depend on it
DROP SEQUENCE set_default_test_seq

# When a column's DEFAULT is altered from using seq A to using seq B,
# A can now be dropped, and B can't.

statement ok
CREATE SEQUENCE initial_seq

statement ok
CREATE SEQUENCE changed_to_seq

statement ok
CREATE TABLE set_default_test (id INT PRIMARY KEY DEFAULT nextval('initial_seq'))

statement error pq: cannot drop sequence initial_seq because other objects depend on it
DROP SEQUENCE initial_seq

statement ok
ALTER TABLE set_default_test ALTER COLUMN id SET DEFAULT nextval('changed_to_seq')

statement ok
DROP SEQUENCE initial_seq

statement error pq: cannot drop sequence changed_to_seq because other objects depend on it
DROP SEQUENCE changed_to_seq

# Sequence deletion is allowed after a column's usage of a sequence is dropped with DROP DEFAULT.

statement ok
CREATE SEQUENCE drop_default_test_seq

statement ok
CREATE TABLE drop_default_test_tbl (id INT PRIMARY KEY DEFAULT nextval('drop_default_test_seq'))

statement ok
ALTER TABLE drop_default_test_tbl ALTER COLUMN id DROP DEFAULT

statement ok
DROP SEQUENCE drop_default_test_seq

# Verify that a new default can be added.

statement ok
CREATE SEQUENCE drop_default_test_seq_2

statement ok
ALTER TABLE drop_default_test_tbl ALTER COLUMN id SET DEFAULT nextval('drop_default_test_seq_2')

# Test that dependencies are recorded correctly when a column uses multiple sequences.

statement ok
CREATE SEQUENCE multiple_seq_test1

statement ok
CREATE SEQUENCE multiple_seq_test2

statement ok
CREATE TABLE multiple_seq_test_tbl (
  id INT PRIMARY KEY DEFAULT nextval('multiple_seq_test1') + nextval('multiple_seq_test2')
)

statement error pq: cannot drop sequence multiple_seq_test1 because other objects depend on it
DROP SEQUENCE multiple_seq_test1

statement error pq: cannot drop sequence multiple_seq_test2 because other objects depend on it
DROP SEQUENCE multiple_seq_test2

# This should remove both sequence dependencies.
statement ok
ALTER TABLE multiple_seq_test_tbl ALTER COLUMN id SET DEFAULT unique_rowid()

statement ok
DROP SEQUENCE multiple_seq_test1

statement ok
DROP SEQUENCE multiple_seq_test2

# Test that dependencies are recorded when multiple columns in a table use sequences.

statement ok
CREATE SEQUENCE multiple_usage_test_1

statement ok
CREATE SEQUENCE multiple_usage_test_2

statement ok
CREATE TABLE multiple_usage_test_tbl (
  id INT PRIMARY KEY DEFAULT nextval('multiple_usage_test_1'),
  other_id INT DEFAULT nextval('multiple_usage_test_2')
)

# We're prevented from dropping the first sequence until the dep is removed.

statement error pq: cannot drop sequence multiple_usage_test_1 because other objects depend on it
DROP SEQUENCE multiple_usage_test_1

statement ok
ALTER TABLE multiple_usage_test_tbl ALTER COLUMN id DROP DEFAULT

statement ok
DROP SEQUENCE multiple_usage_test_1

# We're prevented from dropping the second sequence until the dep is removed.

statement error pq: cannot drop sequence multiple_usage_test_2 because other objects depend on it
DROP SEQUENCE multiple_usage_test_2

statement ok
ALTER TABLE multiple_usage_test_tbl ALTER COLUMN other_id DROP DEFAULT

statement ok
DROP SEQUENCE multiple_usage_test_2

# Verify that deps are removed when a sequence-using table is dropped.

statement ok
CREATE SEQUENCE drop_test

statement ok
CREATE TABLE drop_test_tbl (id INT PRIMARY KEY DEFAULT nextval('drop_test'))

statement error pq: cannot drop sequence drop_test because other objects depend on it
DROP SEQUENCE drop_test

statement ok
DROP TABLE drop_test_tbl

statement ok
DROP SEQUENCE drop_test

# Test that sequences can only be modified with the UPDATE permission
# and read with the SELECT permission.

statement ok
CREATE SEQUENCE priv_test

user testuser

statement error pq: user testuser does not have SELECT privilege on relation priv_test
SELECT * FROM priv_test

statement error pq: nextval\(\): user testuser does not have UPDATE privilege on relation priv_test
SELECT nextval('priv_test')

statement error pq: setval\(\): user testuser does not have UPDATE privilege on relation priv_test
SELECT setval('priv_test', 5)

user root

# Verify that the value hasn't been changed.
query I
SELECT last_value FROM priv_test
----
0

statement ok
GRANT UPDATE, SELECT ON priv_test TO testuser

user testuser

# After the grant, testuser can select, increment, and set.

statement ok
SELECT nextval('priv_test')

statement ok
SELECT setval('priv_test', 5)

query I
SELECT last_value FROM priv_test
----
5

user root

subtest virtual_sequences

statement ok
CREATE SEQUENCE sv VIRTUAL

query T
SELECT create_statement FROM [SHOW CREATE SEQUENCE sv]
----
CREATE SEQUENCE sv MINVALUE 1 MAXVALUE 9223372036854775807 INCREMENT 1 START 1 VIRTUAL

statement ok
CREATE TABLE svals(x INT)

statement ok
BEGIN;
  INSERT INTO svals VALUES(nextval('sv'));
  INSERT INTO svals VALUES(lastval());
  INSERT INTO svals VALUES(currval('sv'));
END

# Check that lastval returns the last auto-generated virtual value.
query I
SELECT count(DISTINCT x) FROM svals
----
1

# Check that the KV trace is empty.
statement ok
BEGIN;
  SELECT nextval('sv'); -- acquire the lease, so that doesn't go to the KV trace
  SET tracing = on; SELECT nextval('sv'); SET tracing = off;
  COMMIT

query T
SELECT message FROM [SHOW KV TRACE FOR SESSION]
----
rows affected: 1

statement ok
DROP SEQUENCE sv

# Check that generators can be interrupted by statement timeouts.
subtest generator_timeout

statement ok
SET statement_timeout = 1

statement error pq: query execution canceled due to statement timeout
select * from generate_series(1,10000000) where generate_series = 0;

# Clean up
statement ok
SET statement_timeout = 0

# Test that multiple columns associated with the same sequence follow correct
# dependency behavior. Regression test for #40852

statement ok
SET sql_safe_updates = false

statement ok
CREATE SEQUENCE seq;

statement ok
CREATE TABLE abc(a INT DEFAULT nextval('seq'), b INT default nextval('seq'), c int)

statement error pq: cannot drop sequence seq because other objects depend on it
DROP SEQUENCE seq;

statement ok
ALTER TABLE abc DROP COLUMN b;

statement error pq: cannot drop sequence seq because other objects depend on it
DROP SEQUENCE seq;

statement ok
ALTER TABLE abc DROP COLUMN a;

statement ok
DROP SEQUENCE seq;

# Sequence Ownership tests

# Sequence can be owned be owned by a table column

statement ok
CREATE TABLE owner(owner_col INT)

statement ok
CREATE SEQUENCE owned_seq OWNED BY owner.owner_col

query TTT
SELECT seqclass.relname AS sequence_name,
       depclass.relname AS table_name,
       attrib.attname   as column_name
FROM   pg_class AS seqclass
       JOIN pg_depend AS dep
         ON seqclass.oid = dep.objid
       JOIN pg_class AS depclass
         ON dep.refobjid = depclass.oid
       JOIN pg_attribute AS attrib
         ON attrib.attnum = dep.refobjsubid
              AND attrib.attrelid = dep.refobjid
WHERE seqclass.relkind = 'S';
----
owned_seq owner owner_col

# Sequence owner can be removed

statement ok
ALTER SEQUENCE owned_seq OWNED BY NONE

statement count 0
SELECT seqclass.relname AS sequence_name,
       depclass.relname AS table_name,
       attrib.attname   as column_name
FROM   pg_class AS seqclass
       JOIN pg_depend AS dep
         ON seqclass.oid = dep.objid
       JOIN pg_class AS depclass
         ON dep.refobjid = depclass.oid
       JOIN pg_attribute AS attrib
         ON attrib.attnum = dep.refobjsubid
              AND attrib.attrelid = dep.refobjid
WHERE seqclass.relkind = 'S';

# cleanup
statement ok
DROP TABLE owner

statement ok
DROP SEQUENCE owned_seq


# Sequence is dropped when its owner is dropped
statement ok
CREATE SEQUENCE owned_seq;

statement ok
CREATE TABLE a(a INT DEFAULT nextval('owned_seq'));

statement ok
ALTER SEQUENCE owned_seq OWNED BY a.a;

statement ok
DROP TABLE a;

statement error relation "owned_seq" does not exist
DROP SEQUENCE owned_seq;


# DROP TABLE and ALTER TABLE ... DROP COLUMN work correctly with multiple sequence dependencies
# and Ownership scenarios

statement ok
CREATE SEQUENCE owned_seq;

statement ok
CREATE TABLE ab(a INT DEFAULT nextval('owned_seq'), b INT DEFAULT nextval('owned_seq'));

statement ok
ALTER SEQUENCE owned_seq OWNED BY ab.a;

statement error cannot drop table ab because other objects depend on it
ALTER TABLE ab DROP COLUMN a;

statement ok
DROP TABLE ab

statement error relation "owned_seq" does not exist
DROP SEQUENCE owned_seq;


# Test changing owners works correctly by ensuring sequence is not dropped
# when previous owners are dropped.
statement ok
CREATE TABLE a(a INT);

statement ok
CREATE TABLE b(b INT);

statement ok
CREATE SEQUENCE seq OWNED BY a.a;

statement ok
ALTER SEQUENCE seq OWNED BY a.a;

statement ok
ALTER SEQUENCE seq OWNED BY b.b;

statement ok
DROP TABLE a;

statement ok
ALTER SEQUENCE seq OWNED BY NONE;

statement ok
DROP TABLE b;

statement ok
DROP SEQUENCE seq;


# Test a table/column can not be dropped if it owns a Sequence that is used
# by another table.

statement ok
CREATE TABLE a(a INT);

statement ok
CREATE SEQUENCE seq OWNED BY a.a;

statement ok
CREATE TABLE b(b INT DEFAULT nextval('seq'));

statement error cannot drop table a because other objects depend on it
DROP TABLE a

statement error cannot drop table a because other objects depend on it
ALTER TABLE a DROP COLUMN a;

statement ok
DROP TABLE b;

statement ok
DROP TABLE a;