63 lines
2.8 KiB
SQL
63 lines
2.8 KiB
SQL
-- Returns one row per system, containing info about latest switch + array of member IDs (for future joins)
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create view system_last_switch as
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select systems.id as system,
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last_switch.id as switch,
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last_switch.timestamp as timestamp,
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array(select member from switch_members where switch_members.switch = last_switch.id) as members
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from systems
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inner join lateral (select * from switches where switches.system = systems.id order by timestamp desc limit 1) as last_switch on true;
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-- Returns one row for every current fronter in a system, w/ some member info
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create view system_fronters as
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select
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systems.id as system_id,
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last_switch.id as switch_id,
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last_switch.timestamp as switch_timestamp,
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members.id as member_id,
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members.hid as member_hid,
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members.name as member_name
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from systems
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-- TODO: is there a more efficient way of doing this search? might need to index on timestamp if we haven't in prod
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inner join lateral (select * from switches where switches.system = systems.id order by timestamp desc limit 1) as last_switch on true
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-- change to left join to handle memberless switches?
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inner join switch_members on switch_members.switch = last_switch.system
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inner join members on members.id = switch_members.member
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-- return them in order of the switch itself
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order by switch_members.id;
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create view member_list as
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select members.*,
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-- Find last message ID
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-- max(mid) does full table scan, order by/limit uses index (dunno why, but it works!)
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(select mid from messages where messages.member = members.id order by mid desc nulls last limit 1) as last_message,
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-- Find last switch timestamp
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(
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select max(switches.timestamp)
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from switch_members
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inner join switches on switches.id = switch_members.switch
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where switch_members.member = members.id
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) as last_switch_time,
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-- Extract month/day from birthday and "force" the year identical (just using 4) -> month/day only sorting!
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case when members.birthday is not null then
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make_date(
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4,
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extract(month from members.birthday)::integer,
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extract(day from members.birthday)::integer
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) end as birthday_md,
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-- Extract member description as seen by "the public"
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case
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-- Privacy '1' = public; just return description as normal
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when members.description_privacy = 1 then members.description
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-- Any other privacy (rn just '2'), return null description (missing case = null in SQL)
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end as public_description
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from members;
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create view group_list as
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select groups.*,
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-- Find group member count
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(select count(*) from group_members where group_id = groups.id) as member_count
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from groups; |