public async Task <int> UpdateLocation(RetailerLocation retailerLocation)
        {
            var cmd = QueriesCreatingHelper.CreateQueryUpdate(retailerLocation);
            var rs  = await DALHelper.Execute(cmd, dbTransaction : DbTransaction, connection : DbConnection);

            return(rs == 0 ? -1 : 0);
        }
        public async Task <int> AddLocation(RetailerLocation retailerLocation)
        {
            var cmd = QueriesCreatingHelper.CreateQueryInsert(retailerLocation);

            cmd += ";SELECT LAST_INSERT_ID();";
            return((await DALHelper.ExecuteQuery <int>(cmd, dbTransaction: DbTransaction, connection: DbConnection)).First());
        }
        public async Task <int> DeleteLocation(RetailerLocation retailerLocation)
        {
            var cmd = $@"UPDATE `retailer_location`
                         SET
                         `is_deleted` = 1,
                         `modified_by` = {retailerLocation.ModifiedBy},
                         `modified_date` = '{retailerLocation.ModifiedDate?.ToString("yyyyMMddHHmmss")}'
                         WHERE `id` = {retailerLocation.Id}";
            var rs  = await DALHelper.Execute(cmd, dbTransaction : DbTransaction, connection : DbConnection);

            return(rs == 0 ? -1 : 0);
        }