checking for table relation respects temporary tables

Author: Nathan Gabrielson

core/relations.go

@@ -60,14 +60,21 @@ func GetRelationType(ctx *sql.Context, schema string, relation string) (Relation
 // GetRelationTypeFromRoot performs the same function as GetRelationType, except that it uses the given root rather than
 // the working session's root.
 func GetRelationTypeFromRoot(ctx *sql.Context, schema string, relation string, root *RootValue) (RelationType, error) {
-	// Check tables first
+	// Check tables and temporary tables first
 	ok, err := root.HasTable(ctx, doltdb.TableName{Schema: schema, Name: relation})
 	if err != nil {
 		return RelationType_DoesNotExist, err
 	}
 	if ok {
 		return RelationType_Table, nil
 	}
+
+	doltSession := dsess.DSessFromSess(ctx.Session)
+	dbName := ctx.GetCurrentDatabase()
+	if _, ok := doltSession.GetTemporaryTable(ctx, dbName, relation); ok {
+		return RelationType_Table, nil
+	}
+
 	// Check sequences next
 	collection, err := sequences.LoadSequences(ctx, root)
 	if err != nil {

testing/go/create_table_test.go

@@ -450,3 +450,21 @@ func TestCreateTableInherit(t *testing.T) {
 		},
 	})
 }
+
+func TestCreateTemporaryTable(t *testing.T) {
+	RunScripts(t, []ScriptTest{
+		{
+			Name: "Create temporary table with serial column",
+			Assertions: []ScriptTestAssertion{
+				{
+					Query:    "CREATE TEMP TABLE temp (id serial primary key)",
+					Expected: []sql.Row{},
+				},
+				{
+					Query:    "CREATE TEMP TABLE temp2 (id serial)",
+					Expected: []sql.Row{},
+				},
+			},
+		},
+	})
+}