should be it

external/duckdb/test/sql/upsert/upsert_set_expressions.test

@@ -0,0 +1,56 @@
+# name: test/sql/upsert/upsert_set_expressions.test
+# group: [upsert]
+
+statement ok
+pragma enable_verification;
+
+# Create a table with only 1 non-indexed column
+statement ok
+create or replace table tbl(
+	i integer PRIMARY KEY,
+	j integer UNIQUE,
+	k integer
+);
+
+# Add 3 rows
+statement ok
+insert into tbl VALUES
+	(1, 10, 1),
+	(2, 20, 1),
+	(3, 30, 2);
+
+# the 'i' column is indexed on and 3 already exists, causes a conflict
+# this updates 'k' to 5
+statement ok
+insert into tbl VALUES (3,5,1) ON CONFLICT (i) DO UPDATE SET k = 5;
+
+query III
+select * from tbl;
+----
+1	10	1
+2	20	1
+3	30	5
+
+# the 'i' column is indexed on and 3 already exists, causes a conflict
+# this updates 'k' to 1 + excluded.k
+statement ok
+insert into tbl VALUES (3,5,1) ON CONFLICT (i) DO UPDATE SET k = 1 + excluded.k;
+
+query III
+select * from tbl;
+----
+1	10	1
+2	20	1
+3	30	2
+
+# the 'i' column is indexed on and 3 already exists, causes a conflict
+# this updates 'k' to k + excluded.k
+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