chore: import upstream snapshot with attribution

testing/go/set_operations_test.go

@@ -0,0 +1,114 @@
+// Copyright 2024 Dolthub, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package _go
+
+import (
+	"testing"
+
+	"github.com/dolthub/go-mysql-server/sql"
+)
+
+func TestSetOperations(t *testing.T) {
+	RunScripts(t, []ScriptTest{
+		{
+			Name: "Test intersect",
+			SetUpScript: []string{
+				"create table b (m int, n int);",
+				"insert into b values (1,2), (1,3), (3,4);",
+				"create table c (m int, n int);",
+				"insert into c values (1,3), (1,3), (3,4);",
+			},
+			Assertions: []ScriptTestAssertion{
+				{
+					Query: "select * from b intersect select * from c order by 1,2;",
+					Expected: []sql.Row{
+						{1, 3},
+						{3, 4},
+					},
+				},
+				{
+					Query: "(table b order by m limit 1 offset 1) intersect (table c order by m limit 1);",
+					Expected: []sql.Row{
+						{1, 3},
+					},
+				},
+			},
+		},
+		{
+			Name: "Test union",
+			SetUpScript: []string{
+				"create table b (m int, n int);",
+				"insert into b values (1,2), (1,3), (3,4);",
+				"create table c (m int, n int);",
+				"insert into c values (1,3), (1,3), (3,4);",
+			},
+			Assertions: []ScriptTestAssertion{
+				{
+					Query: "select * from b union select * from c order by 1,2;",
+					Expected: []sql.Row{
+						{1, 2},
+						{1, 3},
+						{3, 4},
+					},
+				},
+				{
+					Query: "select * from b union all select * from c order by 1,2;",
+					Expected: []sql.Row{
+						{1, 2},
+						{1, 3},
+						{1, 3},
+						{1, 3},
+						{3, 4},
+						{3, 4},
+					},
+				},
+				{
+					Query: "(table b order by m limit 1 offset 1) union (table c order by m limit 1);",
+					Expected: []sql.Row{
+						{1, 3},
+					},
+				},
+				{
+					Query: "(table b order by m limit 1 offset 1) union all (table c order by m limit 1);",
+					Expected: []sql.Row{
+						{1, 3},
+						{1, 3},
+					},
+				},
+			},
+		},
+		{
+			Name: "Test except",
+			SetUpScript: []string{
+				"create table b (m int, n int);",
+				"insert into b values (1,2), (1,3), (3,4);",
+				"create table c (m int, n int);",
+				"insert into c values (1,3), (1,3), (3,4);",
+			},
+			Assertions: []ScriptTestAssertion{
+				{
+					Query: "select * from b except select * from c order by 1,2;",
+					Expected: []sql.Row{
+						{1, 2},
+					},
+				},
+				{
+					Query:    "(table b order by m limit 1 offset 1) except (table c order by m limit 1);",
+					Expected: []sql.Row{},
+				},
+			},
+		},
+	})
+}