我需要从现有数据库中访问两个表：ea_user_settings和ea_appointments
这些表中的数据如下所示：
ea_user_settings
id_users_provider working_plan
85 {"sunday":null,"monday":null,"tuesday":{"start":"11:00","end":"19:00","breaks":[{"start":"16:00","end":"17:00"},{"start":"13:00","end":"14:00"}]},"wednesday":null,"thursday":null,"friday":null,"saturday":null}
break变量的范围从[]到privider计划的数量。
ea_appointments
id start_datetime end_datetime id_users_provider
1 '2015-09-08 14:00:00:00' '2015-09-08 14:50:00:00' 85
2 '2015-09-08 15:00:00:00' '2015-09-08 15:50:00:00' 85
3 '2015-09-17 12:00:00:00' '2015-09-17 15:50:00:00' 89
4 '2015-09-17 16:00:00:00' '2015-09-17 16:30:00:00' 89
5 '2015-09-22 11:00:00:00' '2015-09-08 11:50:00:00' 85
6 '2015-09-22 12:00:00:00' '2015-09-08 12:50:00:00' 85
7 '2015-09-22 14:00:00:00' '2015-09-08 14:50:00:00' 85
8 '2015-09-22 15:00:00:00' '2015-09-08 15:50:00:00' 85
9 '2015-09-22 17:00:00:00' '2015-09-08 17:50:00:00' 85
10 '2015-09-22 18:00:00:00' '2015-09-08 18:50:00:00' 85
我需要一个MySQL查询，它将产生以下结果： 对于2015-09-07和2015-09-23之间的提供商85，存在多少可用的60分钟时隙。结果如下所示：
id_users_provider available_days available_slots
85 2015-09-08 4
85 2015-09-15 6
我看到了这个Mysql Find free time (slots) between appointments for booking system和其他类似的帖子。这有助于我了解如何在现有约会之间提取可用性。我也看到我需要加入表格提供者工作计划的表格。我不确定如何将工作计划提取到表中以加入并生成结果。所以，任何提示都将受到赞赏。