@@ -25,6 +26,9 @@ public interface DormitoryMapper {
intdecreaseCount(Dormitorydormitory);
@Select("select bid, sum(count) as count from dormitory group by bid")
@Results({@Result(column="bid",property="key"),
@Result(column="count",property="value")
})
List<Pair<Integer,BigDecimal>>countStudent();
@Update("<script> update dormitory_sys.dormitory set count = count - 1 where id in <foreach collection = 'id' index = 'index' item = 'item' open = '(' separator = ',' close = ')'> #{item} </foreach> </script>")