Fix Select with AS, close #3581, #3567

chainable_api.go

@@ -97,7 +97,7 @@ func (db *DB) Select(query interface{}, args ...interface{}) (tx *DB) {
 
 		// normal field names
 		if len(fields) == 1 || (len(fields) == 3 && strings.ToUpper(fields[1]) == "AS") {
-			tx.Statement.Selects = fields
+			tx.Statement.Selects = []string{v}
 
 			for _, arg := range args {
 				switch arg := arg.(type) {

tests/go.mod

@@ -6,7 +6,7 @@ require (
 	github.com/google/uuid v1.1.1
 	github.com/jinzhu/now v1.1.1
 	github.com/lib/pq v1.6.0
-	gorm.io/driver/mysql v1.0.1
+	gorm.io/driver/mysql v1.0.2
 	gorm.io/driver/postgres v1.0.2
 	gorm.io/driver/sqlite v1.1.3
 	gorm.io/driver/sqlserver v1.0.4

tests/query_test.go

@@ -475,6 +475,16 @@ func TestSelect(t *testing.T) {
 		t.Errorf("Should have user Name when selected it")
 	}
 
+	var result2 User
+	DB.Where("name = ?", user.Name).Select("name as name").Find(&result2)
+	if result2.ID != 0 {
+		t.Errorf("Should not have ID because only selected name, %+v", result2.ID)
+	}
+
+	if user.Name != result2.Name {
+		t.Errorf("Should have user Name when selected it")
+	}
+
 	dryDB := DB.Session(&gorm.Session{DryRun: true})
 	r := dryDB.Select("name", "age").Find(&User{})
 	if !regexp.MustCompile("SELECT .*name.*,.*age.* FROM .*users.*").MatchString(r.Statement.SQL.String()) {