tx.Error = nil
		} else {
			db.Error = tx.Error
		}
	}
}

func CommitOrRollbackTransaction(db *gorm.DB) {
	if !db.Config.SkipDefaultTransaction {
		if _, ok := db.InstanceGet("gorm:started_transaction"); ok {
			if db.Error != nil {
				db.Rollback()
			} else {
				db.Commit()
			}

			db.Statement.ConnPool = db.ConnPool
		}
	}

		default:
			rv := reflect.ValueOf(v)
			if v == nil || !rv.IsValid() || rv.Kind() == reflect.Ptr && rv.IsNil() {
				vars[idx] = nullStr
			} else if valuer, ok := v.(driver.Valuer); ok {
				v, _ = valuer.Value()
				convertParams(v, idx)
			} else if rv.Kind() == reflect.Ptr && !rv.IsZero() {
				convertParams(reflect.Indirect(rv).Interface(), idx)
			} else if isNumeric(rv.Kind()) {

		t.Fatalf("failed to get columns, got error %v", err)
	}

	hasLogID := false
	for _, column := range columns {
		if column.Name() == "log_id" {
			hasLogID = true
			autoIncrement, ok := column.AutoIncrement()
			if !ok || !autoIncrement {
				t.Fatalf("column log_id should be auto incrementment")
			}
		}
	}

	if !hasLogID {
		t.Fatalf("failed to found column log_id")
	}
}

	if sqldb, ok := db.ConnPool.(*sql.DB); ok {
		return sqldb, nil
	}

	if dbConnector, ok := db.ConnPool.(GetDBConnector); ok && dbConnector != nil {
		return dbConnector.GetDBConn()
	}

	return nil, ErrInvalidDB
}

func (db *PreparedStmtDB) Close() {
	db.Mux.Lock()
	defer db.Mux.Unlock()

	for _, query := range db.PreparedSQL {
		if stmt, ok := db.Stmts[query]; ok {

			elem := reflectValue.Index(i)
			elemKey := elem.Interface()
			if elem.Kind() != reflect.Ptr && elem.CanAddr() {
				elemKey = elem.Addr().Interface()
			}

			if _, ok := loaded[elemKey]; ok {
				continue
			}
			loaded[elemKey] = true

			fieldValues := make([]interface{}, len(fields))
			notZero = false
			for idx, field := range fields {

			}
			builder.WriteQuoted(column)
		}
	} else {
		builder.WriteByte('*')
	}
}

func (s Select) MergeClause(clause *Clause) {
	if s.Expression != nil {
		if s.Distinct {
			if expr, ok := s.Expression.(Expr); ok {
				expr.SQL = "DISTINCT " + expr.SQL
				clause.Expression = expr
				return
			}
		}

		clause.Expression = s.Expression
	} else {
		clause.Expression = s
	}
}

}

type EncryptedData []byte

func (data *EncryptedData) Scan(value interface{}) error {
	if b, ok := value.([]byte); ok {
		if len(b) < 3 || b[0] != '*' || b[1] != '*' || b[2] != '*' {
			return errors.New("Too short")
		}

		*data = append((*data)[0:], b[3:]...)
		return nil
	} else if s, ok := value.(string); ok {
		*data = []byte(s[3:])
		return nil
	}

	return errors.New("Bytes expected")
}

			},
		},
	}, indices)
}

func CheckIndices(t *testing.T, expected, actual map[string]schema.Index) {
	for k, ei := range expected {
		t.Run(k, func(t *testing.T) {
			ai, ok := actual[k]
			if !ok {
				t.Errorf("expected index %q but actual missing", k)
				return
			}
			tests.AssertObjEqual(t, ai, ei, "Name", "Class", "Type", "Where", "Comment", "Option")
			if len(ei.Fields) != len(ai.Fields) {

	}

	if err := tx.First(&User{}, "name = ?", user1.Name).Error; err != nil {
		t.Fatalf("Should find saved record, but got %v", err)
	}

	if sqlTx, ok := tx.Statement.ConnPool.(gorm.TxCommitter); !ok || sqlTx == nil {
		t.Fatalf("Should return the underlying sql.Tx")
	}

	tx.Rollback()

	if err := DB.First(&User{}, "name = ?", "transaction").Error; err == nil {

							assignValue(field, value[k])
						}
					} else if v, ok := selectColumns[field.Name]; (ok && v) || (!ok && !restricted) {
						assignValue(field, value[k])
					}
					continue
				}
			}

			if v, ok := selectColumns[k]; (ok && v) || (!ok && !restricted) {
				set = append(set, clause.Assignment{Column: clause.Column{Name: k}, Value: kv})
			}
		}

		if !stmt.SkipHooks && stmt.Schema != nil {