Testing raw columns in Select().

main.go

@@ -186,7 +186,7 @@ type Result interface {
 	Sort(...string) Result
 
 	// Defines specific fields to be returned on results on this result set.
-	Select(...string) Result
+	Select(...interface{}) Result
 
 	// Sets conditions.
 	Where(...interface{}) Result

postgresql/database_test.go

@@ -745,7 +745,7 @@ func TestRawRelations(t *testing.T) {
 	).Select(
 		"p.id",
 		"p.title as publication_title",
-		"a.name AS artist_name",
+		db.Raw{"a.name AS artist_name"},
 	)
 
 	type artistPublication_t struct {

postgresql/result.go

@@ -112,12 +112,17 @@ func (self *Result) Sort(fields ...string) db.Result {
 }
 
 // Retrieves only the given fields.
-func (self *Result) Select(fields ...string) db.Result {
+func (self *Result) Select(fields ...interface{}) db.Result {
 	self.columns = make(sqlgen.Columns, 0, len(fields))
 
 	l := len(fields)
 	for i := 0; i < l; i++ {
-		self.columns = append(self.columns, sqlgen.Column{fields[i]})
+		switch value := fields[i].(type) {
+		case db.Raw:
+			self.columns = append(self.columns, sqlgen.Column{value.Value})
+		default:
+			self.columns = append(self.columns, sqlgen.Column{value})
+		}
 	}
 
 	return self