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# name: test/sql/catalog/case_insensitive_using.test
# description: Test case insensitivity in USING clauses and NATURAL joins
# group: [catalog]
statement ok
create table A as select 1 as "X", 2 as "Y";
statement ok
create table B as select 1 as "X", 3 as "Z";
query III
select * from A join B using(X);
----
1 2 3
query III
select * from A join B using("X");
----
1 2 3
# case mismatch in using clause
statement ok
DROP TABLE "A"
statement ok
DROP TABLE "B"
statement ok
create table A as select 1 as "X", 2 as "Y";
statement ok
create table B as select 1 as X, 3 as "Z";
query III
select * from A join B using(X);
----
1 2 3
query III
select * from A join B using(X);
----
1 2 3
# using clause with many different case variations on the same name
statement ok
DROP TABLE "A"
statement ok
DROP TABLE "B"
statement ok
create table A as select 1 as "hello", 2 as x;
statement ok
create table B as select 1 as "HELLO", 3 as x2;
statement ok
create table C as select 1 as "hEllO", 4 as x3;
statement ok
create table D as select 1 as "HElLo", 5 as x4;
statement ok
create table E as select 1 as "heLLo", 6 as x5;
query III
SELECT * FROM a JOIN b USING (hello)
----
1 2 3
query III
SELECT * FROM a JOIN b USING (hello, "HELLO");
----
1 2 3
query IIII
SELECT * FROM a JOIN b USING (hello) JOIN c USING (hello)
----
1 2 3 4
query IIII
SELECT * FROM a JOIN b USING (hello) JOIN c USING ("HELLO")
----
1 2 3 4
query IIIII
SELECT * FROM a JOIN b USING (hello) JOIN c USING (hello) JOIN d USING (hello)
----
1 2 3 4 5
query IIIII
SELECT * FROM a JOIN b USING ("HELLO") JOIN c USING ("HeLLo") JOIN d USING (hello)
----
1 2 3 4 5
# full outer join
query IIIIII
SELECT * FROM a JOIN b USING (hello) JOIN c USING (hello) JOIN d USING (hello) JOIN e USING (hello)
----
1 2 3 4 5 6
query III
SELECT * FROM a FULL OUTER JOIN b USING (hello)
----
1 2 3
query IIII
SELECT * FROM a FULL OUTER JOIN b USING (hello) FULL OUTER JOIN c USING (hello)
----
1 2 3 4
query IIIII
SELECT * FROM a FULL OUTER JOIN b USING (hello) FULL OUTER JOIN c USING (hello) FULL OUTER JOIN d USING (hello)
----
1 2 3 4 5
query IIIIII
SELECT * FROM a FULL OUTER JOIN b USING (hello) FULL OUTER JOIN c USING (hello) FULL OUTER JOIN d USING (hello) FULL OUTER JOIN e USING (hello)
----
1 2 3 4 5 6
# natural join
query III
SELECT * FROM a NATURAL JOIN b
----
1 2 3
query IIII
SELECT * FROM a NATURAL JOIN b NATURAL JOIN c
----
1 2 3 4
query IIIII
SELECT * FROM a NATURAL JOIN b NATURAL JOIN c NATURAL JOIN d
----
1 2 3 4 5
query IIIIII
SELECT * FROM a NATURAL JOIN b NATURAL JOIN c NATURAL JOIN d NATURAL JOIN e
----
1 2 3 4 5 6
query IIIIII
SELECT * FROM (a NATURAL JOIN b NATURAL JOIN c) NATURAL JOIN (d NATURAL JOIN e)
----
1 2 3 4 5 6
# natural full outer join
query III
SELECT * FROM a NATURAL FULL OUTER JOIN b
----
1 2 3
query IIII
SELECT * FROM a NATURAL FULL OUTER JOIN b NATURAL FULL OUTER JOIN c
----
1 2 3 4
query IIIII
SELECT * FROM a NATURAL FULL OUTER JOIN b NATURAL FULL OUTER JOIN c NATURAL FULL OUTER JOIN d
----
1 2 3 4 5
query IIIIII
SELECT * FROM a NATURAL FULL OUTER JOIN b NATURAL FULL OUTER JOIN c NATURAL FULL OUTER JOIN d NATURAL FULL OUTER JOIN e
----
1 2 3 4 5 6
query IIIIII
SELECT * FROM (a NATURAL FULL OUTER JOIN b NATURAL FULL OUTER JOIN c) NATURAL FULL OUTER JOIN (d NATURAL FULL OUTER JOIN e)
----
1 2 3 4 5 6
# natural join with ambiguity
query II
SELECT * FROM (SELECT 1 "hello", 2 "hello") NATURAL JOIN (SELECT 1 "hello", 2 "hello")
----
1 2
query II
SELECT * FROM (SELECT 1 "hello", 2 "HeLlO") NATURAL JOIN (SELECT 1 "hello", 2 "HeLlO")
----
1 2
query IIII
SELECT * FROM (SELECT 1 "hello", 2 "hello") t1, (SELECT 1 "hello", 2 "hello") t2
----
1 2 1 2
# using join with ambiguity
query III
SELECT * FROM (SELECT 1 "hello", 2 "hello") t1 JOIN (SELECT 1 "hello", 2 "hello") t2 USING (hello);
----
1 2 2
query III
SELECT * FROM (SELECT 1 "hello", 2 "HeLlO") t1 JOIN (SELECT 1 "hello", 2 "HeLlO") t2 USING (hello);
----
1 2 2
# ambiguous using column reference
statement error
SELECT hello FROM (a JOIN b USING (hello)), (d JOIN e USING (hello))
----
<REGEX>:.*Binder Error: Ambiguous column reference.*
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