# name: test/sql/upsert/upsert_basic.test
# group: [upsert]

statement ok
PRAGMA enable_verification;

statement ok
CREATE TABLE tbl(
	i INT PRIMARY KEY,
	j INT UNIQUE,
	k INT
);

statement ok
INSERT INTO tbl VALUES (1, 10, 1), (2, 20, 1), (3, 30, 2);

# Update the on-conflict column.
statement ok
INSERT INTO tbl VALUES (3, 5, 1)
ON CONFLICT (i) DO UPDATE SET i = i + 1;

query III
SELECT i, j, k FROM tbl ORDER BY ALL;
----
1	10	1
2	20	1
4	30	2

query III
SELECT i, j, k FROM tbl WHERE i = 4;
----
4	30	2

# Update the on-conflict column again.
statement ok
INSERT INTO tbl VALUES (4, 30, 2)
ON CONFLICT (i) DO UPDATE SET i = i - 1;

query III
SELECT i, j, k FROM tbl ORDER BY ALL;
----
1	10	1
2	20	1
3	30	2

# Cannot update to the same PK value as another column.
statement error
INSERT INTO tbl VALUES (3, 30, 2)
ON CONFLICT (i) DO UPDATE SET i = i - 2;
----
<REGEX>:Constraint Error.*violates primary key constraint.*

# 'excluded' refers to the VALUES list, turning this into:
# (k)2 + (k.excluded)1 = 3
statement ok
insert into tbl VALUES
	(3,5,1)
ON CONFLICT (i) DO UPDATE SET k = k + excluded.k;

query III
select * from tbl;
----
1	10	1
2	20	1
3	30	3

# The ON CONFLICT does not refer to a column that's indexed on, so it's never true
statement error
insert into tbl VALUES
	(3,5,1)
ON CONFLICT (k) DO UPDATE SET k = excluded.k;
----
Binder Error: The specified columns as conflict target are not referenced by a UNIQUE/PRIMARY KEY CONSTRAINT

# Overwrite the existing value with the new value
statement ok
insert into tbl VALUES
	(3,5,1)
ON CONFLICT (i) DO UPDATE SET k = excluded.k;

query III
select * from tbl;
----
1	10	1
2	20	1
3	30	1

# Don't alter the existing row, but still insert the non-conflicting row
statement ok
insert into tbl VALUES
	(4,2,3),
	(3,5,10)
ON CONFLICT (i) DO NOTHING;

query III
select * from tbl;
----
1	10	1
2	20	1
3	30	1
4	2	3

# Two rows cause a conflict, on the same existing row
# only the last one is used
statement ok
insert into tbl VALUES
	(3,3,10),
	(3,3,10)
ON CONFLICT (i) DO UPDATE SET
	k = excluded.k;

query III
select * from tbl order by all
----
1	10	1
2	20	1
3	30	10
4	2	3

# condition is not matched - no updates have happened
query I
insert into tbl VALUES (3,5,1) ON CONFLICT (i) DO UPDATE SET k = 1 WHERE k < 5;
----
0

query III
select * from tbl;
----
1	10	1
2	20	1
3	30	10
4	2	3

# When the condition is met, the DO is performed
query I
insert into tbl VALUES (3,5,1) ON CONFLICT (i) DO UPDATE SET k = 1 WHERE k >= 5;
----
1

# 'k' in row_id:3 is updated to 1
query III
select * from tbl;
----
1	10	1
2	20	1
3	30	1
4	2	3

# When the condition is on the DO UPDATE part,
# it will always succeed, but turn into a DO NOTHING for the conflicts that don't meet the condition

statement ok
insert into tbl VALUES (3,5,3) on conflict (i) do update set k = 10 WHERE k != 1;

# Unchanged, because the where clause is not met
query III
select * from tbl;
----
1	10	1
2	20	1
3	30	1
4	2	3

statement ok
insert into tbl VALUES (3,5,3) on conflict (i) do update set k = 10 WHERE k == 1;

# Changed, because the where clause is met
query III
select * from tbl;
----
1	10	1
2	20	1
3	30	10
4	2	3

# When we don't specify a conflict target, all unique/primary key constraints are used as the conflict target
statement ok
insert into tbl VALUES (5,1,0), (3,5,20) ON CONFLICT DO NOTHING;

query III
select * from tbl;
----
1	10	1
2	20	1
3	30	10
4	2	3
5	1	0

# Not supported because:
# > It's because one insert row could violate multiple different unique constraints,
#   with it being a different row for each of the constraints that's causing the violation,
#   and the upsert is only intended to update a single row.
# https://sqlite.org/forum/info/45cf84d3e89d590d
statement error
insert into tbl VALUES (5,1,0), (3,5,20) ON CONFLICT DO UPDATE set k = excluded.k;
----
Binder Error: Conflict target has to be provided for a DO UPDATE operation when the table has multiple UNIQUE/PRIMARY KEY constraints

statement ok
create or replace table single_constraint (
	i integer PRIMARY KEY,
	j integer,
	k varchar,
);

statement ok
insert into single_constraint values (5,1,'hello'), (1,10,'test');

# This is however accepted if only a single constraint exists on the table
statement ok
insert into single_constraint values (1,5,'bye'), (3,10,'quack') on conflict do update set j = excluded.j, k = concat(k, excluded.k);

query III
select * from single_constraint
----
5	1	hello
1	5	testbye
3	10	quack