diff --git a/engine.go b/engine.go
index a45771a2..126b3e37 100644
--- a/engine.go
+++ b/engine.go
@@ -451,12 +451,45 @@ func formatColumnValue(dbLocation *time.Location, dstDialect dialects.Dialect, d
 		return "NULL"
 	}
 
-	if dq, ok := d.(bool); ok && (dstDialect.URI().DBType == schemas.SQLITE ||
-		dstDialect.URI().DBType == schemas.MSSQL) {
-		if dq {
-			return "1"
+	switch t := d.(type) {
+	case *sql.NullInt64:
+		if t.Valid {
+			return fmt.Sprintf("%d", t.Int64)
+		}
+		return "NULL"
+	case *sql.NullTime:
+		if t.Valid {
+			return fmt.Sprintf("'%s'", t.Time.Format("2006-1-02 15:04:05"))
+		}
+		return "NULL"
+	case *sql.NullString:
+		if t.Valid {
+			return "'" + strings.Replace(t.String, "'", "''", -1) + "'"
+		}
+		return "NULL"
+	case *sql.NullInt32:
+		if t.Valid {
+			return fmt.Sprintf("%d", t.Int32)
+		}
+		return "NULL"
+	case *sql.NullFloat64:
+		if t.Valid {
+			return fmt.Sprintf("%f", t.Float64)
+		}
+		return "NULL"
+	case *sql.NullBool:
+		if t.Valid {
+			return strconv.FormatBool(t.Bool)
+		}
+		return "NULL"
+	case bool:
+		if dstDialect.URI().DBType == schemas.SQLITE ||
+			dstDialect.URI().DBType == schemas.MSSQL {
+			if t {
+				return "1"
+			}
+			return "0"
 		}
-		return "0"
 	}
 
 	if col.SQLType.IsText() {
@@ -487,7 +520,7 @@ func formatColumnValue(dbLocation *time.Location, dstDialect dialects.Dialect, d
 		return "'" + strings.Replace(v, "'", "''", -1) + "'"
 	} else if col.SQLType.IsBlob() {
 		if reflect.TypeOf(d).Kind() == reflect.Slice {
-			return fmt.Sprintf("%s", dstDialect.FormatBytes(d.([]byte)))
+			return dstDialect.FormatBytes(d.([]byte))
 		} else if reflect.TypeOf(d).Kind() == reflect.String {
 			return fmt.Sprintf("'%s'", d.(string))
 		}
@@ -497,7 +530,7 @@ func formatColumnValue(dbLocation *time.Location, dstDialect dialects.Dialect, d
 			if col.SQLType.Name == schemas.Bool {
 				return fmt.Sprintf("%v", strconv.FormatBool(d.([]byte)[0] != byte('0')))
 			}
-			return fmt.Sprintf("%s", string(d.([]byte)))
+			return string(d.([]byte))
 		case reflect.Int16, reflect.Int8, reflect.Int32, reflect.Int64, reflect.Int:
 			if col.SQLType.Name == schemas.Bool {
 				v := reflect.ValueOf(d).Int() > 0
@@ -609,6 +642,7 @@ func (engine *Engine) dumpTables(tables []*schemas.Table, w io.Writer, tp ...sch
 
 		cols := table.ColumnsSeq()
 		dstCols := dstTable.ColumnsSeq()
+		dstColumns := dstTable.Columns()
 
 		colNames := engine.dialect.Quoter().Join(cols, ", ")
 		destColNames := dstDialect.Quoter().Join(dstCols, ", ")
@@ -619,73 +653,37 @@ func (engine *Engine) dumpTables(tables []*schemas.Table, w io.Writer, tp ...sch
 		}
 		defer rows.Close()
 
-		if table.Type != nil {
-			sess := engine.NewSession()
-			defer sess.Close()
-			for rows.Next() {
-				beanValue := reflect.New(table.Type)
-				bean := beanValue.Interface()
-				fields, err := rows.Columns()
-				if err != nil {
-					return err
-				}
-				scanResults, err := sess.row2Slice(rows, fields, bean)
-				if err != nil {
-					return err
-				}
+		types, err := rows.ColumnTypes()
+		if err != nil {
+			return err
+		}
 
-				dataStruct := utils.ReflectValue(bean)
-				_, err = sess.slice2Bean(scanResults, fields, bean, &dataStruct, table)
-				if err != nil {
+		sess := engine.NewSession()
+		defer sess.Close()
+		for rows.Next() {
+			_, err = io.WriteString(w, "INSERT INTO "+dstDialect.Quoter().Quote(dstTableName)+" ("+destColNames+") VALUES (")
+			if err != nil {
+				return err
+			}
+
+			scanResults, err := sess.engine.scanInterfaces(rows, types)
+			if err != nil {
+				return err
+			}
+			for i, scanResult := range scanResults {
+				s := formatColumnValue(engine.DatabaseTZ, dstDialect, scanResult, dstColumns[i])
+				if _, err = io.WriteString(w, s); err != nil {
 					return err
 				}
-
-				_, err = io.WriteString(w, "INSERT INTO "+dstDialect.Quoter().Quote(dstTableName)+" ("+destColNames+") VALUES (")
-				if err != nil {
-					return err
-				}
-
-				var temp string
-				for _, d := range dstCols {
-					col := table.GetColumn(d)
-					if col == nil {
-						return errors.New("unknown column error")
+				if i < len(scanResults)-1 {
+					if _, err = io.WriteString(w, ","); err != nil {
+						return err
 					}
-
-					field := dataStruct.FieldByIndex(col.FieldIndex)
-					temp += "," + formatColumnValue(engine.DatabaseTZ, dstDialect, field.Interface(), col)
-				}
-				_, err = io.WriteString(w, temp[1:]+");\n")
-				if err != nil {
-					return err
 				}
 			}
-		} else {
-			for rows.Next() {
-				dest := make([]interface{}, len(cols))
-				err = rows.ScanSlice(&dest)
-				if err != nil {
-					return err
-				}
-
-				_, err = io.WriteString(w, "INSERT INTO "+dstDialect.Quoter().Quote(dstTableName)+" ("+destColNames+") VALUES (")
-				if err != nil {
-					return err
-				}
-
-				var temp string
-				for i, d := range dest {
-					col := table.GetColumn(cols[i])
-					if col == nil {
-						return errors.New("unknow column error")
-					}
-
-					temp += "," + formatColumnValue(engine.DatabaseTZ, dstDialect, d, col)
-				}
-				_, err = io.WriteString(w, temp[1:]+");\n")
-				if err != nil {
-					return err
-				}
+			_, err = io.WriteString(w, ");\n")
+			if err != nil {
+				return err
 			}
 		}
 
diff --git a/integrations/engine_test.go b/integrations/engine_test.go
index a06d91aa..48082ce5 100644
--- a/integrations/engine_test.go
+++ b/integrations/engine_test.go
@@ -172,8 +172,17 @@ func TestDumpTables(t *testing.T) {
 		name := fmt.Sprintf("dump_%v-table.sql", tp)
 		t.Run(name, func(t *testing.T) {
 			assert.NoError(t, testEngine.(*xorm.Engine).DumpTablesToFile([]*schemas.Table{tb}, name, tp))
+
 		})
 	}
+
+	assert.NoError(t, testEngine.DropTables(new(TestDumpTableStruct)))
+
+	importPath := fmt.Sprintf("dump_%v-table.sql", testEngine.Dialect().URI().DBType)
+	t.Run("import_"+importPath, func(t *testing.T) {
+		_, err = testEngine.ImportFile(importPath)
+		assert.NoError(t, err)
+	})
 }
 
 func TestDumpTables2(t *testing.T) {