postgresql - postgres min/max group by day of week from date range -


hi have tables has one-to-one relation

report_sites

id | date 1  | 2016-11-02 10:00:00 2  | 2016-11-02 11:00:00 3  | 2016-11-02 12:00:00 4  | 2016-11-03 17:00:00 5  | 2016-11-03 16:00:00

report_services

id | min_serving_time | max_serving_time | report_site_id 1  | 00:00:30.094     | 00:15:30.662     | 1 2  | 00:00:07.566     | 00:07:49.72      | 2 3  | 00:00:07.787     | 00:26:27.587     | 3

i want select min(min_serving_time) max(max_serving_time) date range group weekday this

weekday | min       | max sunday  | 00:00:05  | 00:08:55 monday  | 00:01:51  | 00:05:21 tuesday |           |

i can count rows of weekdays how aggregate value 

select     count(extract(dow report_sites.date) = 1 or null) monday, count(extract(dow report_sites.date) = 2 or null) tuesday, count(extract(dow report_sites.date) = 3 or null) wednesday,     count(extract(dow report_sites.date) = 4 or null) thursday,     count(extract(dow report_sites.date) = 5 or null) friday     report_sites   inner join "report_services"   on "report_sites"."id" = "report_services"."report_site_id" report_sites.date >='2016-11-02'  ,  report_sites.date<='2016-11-07'

thank , suggestions.


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