# 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.

reset-server

# regclass

statement OK
create schema s

statement ok
CREATE TABLE t(i int);

statement ok
CREATE TABLE s.t(i int);

statement ok
CREATE DATABASE d;

statement ok
CREATE TABLE d.public.t();

statement ok
CREATE MATERIALIZED VIEW m AS SELECT * FROM t;

statement ok
CREATE MATERIALIZED VIEW s.m AS SELECT * FROM s.t;

query T
SELECT 't'::regclass::oid::int
----
20190

query T
SELECT 's.t'::regclass::oid::int
----
20191

query T
SELECT 't'::regclass = 's.t'::regclass
----
false

query T
SELECT 'public.t'::regclass::text;
----
t

query T
SELECT 't'::regclass::text;
----
t

query T
SELECT 's.t'::regclass::text;
----
s.t

statement ok
SET search_path = s, public

query T
SELECT 's.t'::regclass::text;
----
t

query T
SELECT 't'::regclass::oid::int
----
20191

query T
SELECT 'public.t'::regclass::text;
----
public.t

statement ok
SET search_path = public

query T
SELECT 's.t'::regclass::text;
----
s.t

query T
SELECT 'public.t'::regclass::text;
----
t

query T
SELECT 'd.public.t'::regclass::text;
----
d.public.t

query T
SELECT 'm'::regclass::oid::int
----
20195

query T
SELECT 's.m'::regclass::oid::int
----
20196

query T
SELECT 'm'::regclass = 's.m'::regclass
----
false

query error db error: ERROR: relation "abs" does not exist
SELECT 'abs'::regclass

query error db error: ERROR: relation "dne" does not exist
SELECT 'dne'::regclass

statement ok
CREATE TABLE "2"()

query T
SELECT 2::regclass
----
2

query T
SELECT '2'::regclass
----
2

# PG supports this
query error db error: ERROR: string is not a valid identifier: "2"
SELECT '2'::text::regclass

query B
SELECT '"2"'::regclass != 2
----
true

query T
SELECT '"2"'::regclass::text
----
2

statement ok
CREATE TABLE "2x"()

query T
SELECT '"2x"'::regclass::text
----
2x

query error db error: ERROR: relation "dne" does not exist
SELECT 'dne'::regclass;

# Check that we handle functions and classes w/ same name
statement ok
CREATE TABLE array_length();

query T
SELECT 'array_length'::regclass::text;
----
array_length

query T
SELECT 'array_length'::regproc::text;
----
array_length

# Check that we handle types and classes w/ same name
statement ok
CREATE TABLE int4();

query T
SELECT 'int4'::regclass::text;
----
int4

query T
SELECT 'int4'::regtype::text;
----
int4

query T
SELECT 'int4'::regclass::oid = 'int4'::regtype::oid;
----
false

query T
SELECT 1::regclass
----
1

query T
SELECT 1::int4::regclass
----
1

query T
SELECT 1::oid::regclass
----
1

query T
SELECT 1::oid::regclass::oid
----
1

query T
SELECT '1'::regclass
----
1

query T
SELECT '1'::pg_catalog.regclass
----
1

query T
SELECT '1'::regclass::text
----
1

query T
SELECT 'mz_tables'::regclass::text
----
mz_tables

query B
SELECT 'mz_tables'::regclass = (SELECT oid FROM mz_objects WHERE name = 'mz_tables')
----
true

query B
SELECT 'mz_tables'::regclass::oid = (SELECT oid FROM mz_objects WHERE name = 'mz_tables')
----
true

# This shouldn't be an error but seems to be impacted by
# some evaluation order issue akin to database-issues#4972
# # Regression for 9194
# query B
# select 'mz_tables'::regclass::oid::text::regclass = (SELECT oid FROM mz_objects WHERE name = 'mz_tables')
# ----
# true

query error relation "nonexistent" does not exist
SELECT 'nonexistent'::regclass

statement ok
CREATE TABLE text_to_regclass (a text);

statement ok
INSERT INTO text_to_regclass VALUES (NULL), ('mz_tables');

# Overflows its stack in debug mode
# query T
# SELECT a::regclass::text FROM text_to_regclass ORDER BY a
# ----
# mz_tables
# NULL

# Make sure that there are no classes with duplicate OIDs
query I
select oid from (select count(*) as cnt, oid from pg_catalog.pg_class group by oid) where cnt>1
----

query T
SELECT NULL::regclass::text
----
NULL

# ensure that all existing types can be cast to their respective names
statement OK
select oid, oid::regclass::text from (select oid from pg_catalog.pg_class)

# ensure that catalog items can be resolved if the active database is invalid

statement OK
SET database TO ''

query T
SELECT 'mz_tables'::regclass = (SELECT oid FROM mz_objects WHERE name = 'mz_tables')
----
true

query T
SELECT 'mz_internal.mz_recent_activity_log'::regclass = (SELECT oid FROM mz_objects WHERE name = 'mz_recent_activity_log')
----
true

query T
SELECT 'materialize.public.t'::regclass::oid::int
----
20190

query error db error: ERROR: relation "t" does not exist
SELECT 't'::regclass::oid::int