Большое спасибо!
Поле профиля пользователя, которое я пытаюсь использовать, называется ‘NZRAB number’
Я попытался составить запрос, и вот что получилось, но, очевидно, я ошибся, так как получил ошибку «Undefined function».
Я не был уверен, должно ли имя поля исключать заглавные буквы и пробелы — Редактор, по крайней мере, не принял пробел в имени поля, поэтому я заменил его на нижнее подчеркивание.
Также возможно, что я путаю имя поля с его меткой — но если это так, я не знаю, как узнать, какое имя поля соответствует метке ‘NZRAB number’.
-- coverage: 'week', 'all', or 'date'
-- [params]
-- date :start_date = 2019-08-27
-- date :end_date = 2019-09-30
-- text :coverage = week
WITH date_range AS (
SELECT date_trunc('day', dd):: date AS "date", EXTRACT(week from date_trunc('day', dd):: date) AS "week"
FROM generate_series
( :start_date::timestamp
, :end_date::timestamp
, '1 day'::interval) dd
), likes_given AS (
SELECT u.id, dr.date, dr.week, count(pa.*) AS "likes"
FROM date_range dr
FULL JOIN users u ON (1=1)
LEFT JOIN post_actions pa ON (pa.created_at:: date = dr.date and post_action_type_id=2 AND user_id = u.id)
GROUP BY dr.date, dr.week, u.id
ORDER BY u.id, dr.date
), posts_summary AS (
SELECT u.id, u.username, u.created_at, dr.*, count(p.id) - count(t.id) AS replies, count(t.id) AS topics, COALESCE(sum(p.like_count),0) AS likes_received, cf.value as NZRAB_number
from date_range dr
FULL OUTER JOIN users u ON (1=1)
LEFT JOIN posts p ON (p.user_id = u.id AND p.created_at::date=dr.date AND p.deleted_at IS NULL)
LEFT JOIN topics t ON (t.user_id = u.id AND t.created_at::date = dr.date AND p.topic_id = t.id AND t.deleted_at IS NULL)
LEFT JOIN user_custom_fields cf ON (u.id = cf.user_id and cf.name = 'NZRAB number')
GROUP BY u.id, dr.date, dr.week
ORDER BY u.id, dr.date
)
SELECT ps.id, ps.username, ps.created_at, ps.NZRAB_number, CASE
WHEN :coverage::text = 'week' THEN ps.week::text
WHEN :coverage::text = 'all' THEN '-1'
ELSE ps.date::text
END AS period, sum(ps.replies) AS replies, sum(ps.topics) AS topics, sum(ps.likes_received) AS likes_received, sum(lg.likes) AS likes_given, COALESCE(sum(posts_read),0) AS posts_read, COALESCE(sum(time_read),0) AS time_read, SUM(visits) AS visits
FROM posts_summary ps
LEFT JOIN likes_given lg ON (ps.date = lg.date AND ps.id = lg.id)
LEFT JOIN visits v ON (v.id = ps.id AND v.date = ps.date)
GROUP BY ps.id, ps.username, ps.created_at, CASE
WHEN :coverage::text = 'week' THEN ps.week::text
WHEN :coverage::text = 'all' THEN '-1'
ELSE ps.date::text
END
ORDER BY ps.id, CASE
WHEN :coverage::text = 'week' THEN ps.week::text
WHEN :coverage::text = 'all' THEN '-1'
ELSE ps.date::text
END
Полученная ошибка:
PG::UndefinedFunction: ERROR: operator does not exist: integer == integer
LINE 32: LEFT JOIN user_custom_fields cf ON (u.id == cf.user_id and c…
^
HINT: No operator matches the given name and argument types. You might need to add explicit type casts.
Если из этого вы сделали вывод, что я понятия не имею, что делаю, то вы правы!