# Copyright 2015 - 2019 The Cockroach Authors. All rights reserved.
# Copyright Materialize, Inc. and contributors. All rights reserved.
#
# Use of this software is governed by the Business Source License
# included in the LICENSE file at the root of this repository.
#
# As of the Change Date specified in that file, in accordance with
# the Business Source License, use of this software will be governed
# by the Apache License, Version 2.0.
#
# This file is derived from the logic test suite in CockroachDB. The
# original file was retrieved on June 10, 2019 from:
#
#     https://github.com/cockroachdb/cockroach/blob/d2f7fbf5dd1fc1a099bbad790a2e1f7c60a66cc3/pkg/sql/logictest/testdata/logic_test/as_of
#
# The original source code is subject to the terms of the Apache
# 2.0 license, a copy of which can be found in the LICENSE file at the
# root of this repository.

# not supported yet
halt

mode cockroach

# Unlikely to support the SELECT ... AS OF SYSTEM TIME syntax exactly.
halt

statement ok
CREATE TABLE t (i INT)

statement ok
INSERT INTO t VALUES (2)

# Verify strings can be parsed as intervals.
query I
SELECT * FROM t AS OF SYSTEM TIME '-1us'
----
2

# Verify a forced interval type works.
query I
SELECT * FROM t AS OF SYSTEM TIME INTERVAL '-1us'
----
2

# Verify that we can use computed expressions.
query I
SELECT * FROM t AS OF SYSTEM TIME -( ('1000' || 'us')::INTERVAL )
----
2

statement error pq: AS OF SYSTEM TIME: only constant expressions or experimental_follower_read_timestamp are allowed
SELECT * FROM t AS OF SYSTEM TIME cluster_logical_timestamp()

statement error pq: subqueries are not allowed in AS OF SYSTEM TIME
SELECT * FROM t AS OF SYSTEM TIME (SELECT '-1h'::INTERVAL)

statement error pq: relation "t" does not exist
SELECT * FROM t AS OF SYSTEM TIME '-1h'

statement error pq: experimental_follower_read_timestamp\(\): experimental_follower_read_timestamp is only available in ccl distribution
SELECT * FROM t AS OF SYSTEM TIME experimental_follower_read_timestamp()

statement error pq: unknown signature: experimental_follower_read_timestamp\(string\) \(desired <timestamptz>\)
SELECT * FROM t AS OF SYSTEM TIME experimental_follower_read_timestamp('boom')

statement error pq: AS OF SYSTEM TIME: only constant expressions or experimental_follower_read_timestamp are allowed
SELECT * FROM t AS OF SYSTEM TIME now()

statement error cannot specify timestamp in the future
SELECT * FROM t AS OF SYSTEM TIME '10s'

# Verify that the TxnTimestamp used to generate now() and current_timestamp() is
# set to the historical timestamp.

query T
SELECT * FROM (SELECT now()) AS OF SYSTEM TIME '2018-01-01'
----
2018-01-01 00:00:00 +0000 UTC

# Verify that zero intervals indistinguishable from zero cause an error.

statement error pq: AS OF SYSTEM TIME: interval value '0.1us' too small, must be <= -1µs
SELECT * FROM t AS OF SYSTEM TIME '0.1us'

statement error pq: AS OF SYSTEM TIME: interval value '0,0' too small, must be <= -1µs
SELECT * FROM t AS OF SYSTEM TIME '0,0'

statement error pq: AS OF SYSTEM TIME: interval value '0.000000000,0' too small, must be <= -1µs
SELECT * FROM t AS OF SYSTEM TIME '0.000000000,0'

statement error pq: AS OF SYSTEM TIME: interval value '-0.1us' too small, must be <= -1µs
SELECT * FROM t AS OF SYSTEM TIME '-0.1us'

statement error pq: AS OF SYSTEM TIME: zero timestamp is invalid
SELECT * FROM t AS OF SYSTEM TIME '0'