// updateDBInfo clones a new DBInfo from old DBInfo, and update on the new one. func (b *Builder) updateDBInfo(roDBInfo *model.DBInfo, oldTableID, newTableID int64) { newDbInfo := new(model.DBInfo) *newDbInfo = *roDBInfo newDbInfo.Tables = make([]*model.TableInfo, 0, len(roDBInfo.Tables)) if newTableID != 0 { // All types except DropTable. newTblInfo := b.is.tables[newTableID].Meta() newDbInfo.Tables = append(newDbInfo.Tables, newTblInfo) } for _, tblInfo := range roDBInfo.Tables { if tblInfo.ID != oldTableID && tblInfo.ID != newTableID { newDbInfo.Tables = append(newDbInfo.Tables, tblInfo) } } b.is.schemas[newDbInfo.ID] = newDbInfo }