# name: test/sql/upsert/postgres/composite_key.test
# group: [postgres]

statement ok
pragma enable_verification;

# insert...on conflict do unique index inference

statement ok
create table insertconflicttest(
	key int4,
	fruit text,
	other int4,
	unique (key, fruit)
);

# fails

statement error
insert into insertconflicttest values(0, 'Crowberry', 0) on conflict (key) do nothing;
----

statement error
insert into insertconflicttest values(0, 'Crowberry', 0) on conflict (fruit) do nothing;
----

# succeeds

statement ok
insert into insertconflicttest values(0, 'Crowberry', 0) on conflict (key, fruit) do nothing;

statement ok
insert into insertconflicttest values(0, 'Crowberry', 0) on conflict (fruit, key, fruit, key) do nothing;

## -- We explicitly don't support a subquery in the WHERE clause currently -- ##
statement error
insert into insertconflicttest
values (0, 'Crowberry', 0) on conflict (key, fruit) do update set other = 1 where exists (select 1 from insertconflicttest ii where ii.key = excluded.key);
----
DO UPDATE SET clause cannot contain a subquery

# inference succeeds:

statement ok
insert into insertconflicttest values (7, 'Raspberry', 0) on conflict (key, fruit) do update set other = 1

statement ok
insert into insertconflicttest values (8, 'Lime', 0) on conflict (fruit, key) do update set other = 1

# inference fails:

statement error
insert into insertconflicttest values (9, 'Banana', 0) on conflict (key) do update set other = 1
----

statement error
insert into insertconflicttest values (10, 'Blueberry', 0) on conflict (key, key, key) do update set other = 1
----

## -- This fails on postgres for some reason? -- ##
statement ok
insert into insertconflicttest values (11, 'Cherry', 0) on conflict (key, fruit) do update set other = 1

## -- This fails on postgres for some reason? -- ##
statement ok
insert into insertconflicttest values (12, 'Date', 0) on conflict (fruit, key) do update set other = 1

# Partial index tests, no inference predicate specified
statement error
create unique index part_comp_key_index on insertconflicttest(key, fruit) where key < 5;
----
Creating partial indexes is not supported currently

statement error
create unique index expr_part_comp_key_index on insertconflicttest(key, fruit) where key < 5;
----
Creating partial indexes is not supported currently

# Expression index tests
statement ok
create unique index expr_key_index on insertconflicttest(fruit);

# inference succeeds:

statement ok
insert into insertconflicttest values (20, 'Quince', 0) on conflict (fruit) do update set other = 1

statement ok
insert into insertconflicttest values (21, 'Pomegranate', 0) on conflict (fruit, fruit) do update set other = 1


# Expression index tests (with regular column)
statement ok
create unique index expr_comp_key_index on insertconflicttest(key, fruit);

statement ok
create unique index tricky_expr_comp_key_index on insertconflicttest(key, fruit, fruit);

# inference succeeds:

statement ok
insert into insertconflicttest values (24, 'Plum', 0) on conflict (key, fruit) do update set other = 1

statement ok
insert into insertconflicttest values (25, 'Peach', 0) on conflict (fruit, key) do update set other = 1
# Should not infer "tricky_expr_comp_key_index" index:

statement ok
insert into insertconflicttest values (26, 'Fig', 0) on conflict (fruit, key, fruit, key) do update set other = 1