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40 lines
1.2 KiB
SQL
40 lines
1.2 KiB
SQL
create view community_view as
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with all_community as
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(
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select *,
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(select name from user_ u where c.creator_id = u.id) as creator_name,
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(select name from category ct where c.category_id = ct.id) as category_name,
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(select count(*) from community_follower cf where cf.community_id = c.id) as number_of_subscribers,
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(select count(*) from post p where p.community_id = c.id) as number_of_posts,
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(select count(*) from comment co, post p where c.id = p.community_id and p.id = co.post_id) as number_of_comments
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from community c
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)
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select
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ac.*,
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u.id as user_id,
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cf.id::boolean as subscribed
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from user_ u
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cross join all_community ac
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left join community_follower cf on u.id = cf.user_id and ac.id = cf.community_id
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union all
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select
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ac.*,
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null as user_id,
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null as subscribed
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from all_community ac
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;
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create view community_moderator_view as
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select *,
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(select name from user_ u where cm.user_id = u.id) as user_name,
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(select name from community c where cm.community_id = c.id) as community_name
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from community_moderator cm;
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create view community_follower_view as
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select *,
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(select name from user_ u where cf.user_id = u.id) as user_name,
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(select name from community c where cf.community_id = c.id) as community_name
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from community_follower cf;
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