fix: count() when use group by and only find one record

finisher_api.go

@@ -422,6 +422,11 @@ func (db *DB) Count(count *int64) (tx *DB) {
 	if tx.RowsAffected != 1 {
 		*count = tx.RowsAffected
 	}
+
+	if _, ok := db.Statement.Clauses["GROUP BY"]; ok && tx.RowsAffected == 1 {
+		*count = tx.RowsAffected
+	}
+
 	return
 }
 

tests/count_test.go

@@ -134,4 +134,14 @@ func TestCount(t *testing.T) {
 		t.Fatalf("Count should be 3, but got count: %v err %v", count10, err)
 	}
 
+	var count11 int64
+	sameUsers := make([]*User, 0)
+	for i := 0; i < 3; i++ {
+		sameUsers = append(sameUsers, GetUser("count-4", Config{}))
+	}
+	DB.Create(sameUsers)
+
+	if err := DB.Model(&User{}).Where("name = ?", "count-4").Group("name").Count(&count11).Error; err != nil || count11 != 1 {
+		t.Fatalf("Count should be 3, but got count: %v err %v", count11, err)
+	}
 }