Simplify user_list

diff --git a/db.sql b/db.sql
index 9343d0b82b7235b0f90b72913e50d9c0d49d0f76..44e2420b88fd4ca354e6a9c4e68cf04c98d72c3f 100644 (file)
--- a/db.sql
+++ b/db.sql
@@ -161,36 +161,15 @@ CREATE OR REPLACE VIEW user_data AS (SELECT
        FROM users
 );
 
-CREATE OR REPLACE VIEW user_solved_problems AS (SELECT
-       us.id,
-       COALESCE(array_agg(ps.problem) FILTER (WHERE ps.problem IS NOT NULL), ARRAY[]::text[]) AS solved
-       FROM users us
-       LEFT JOIN (SELECT * FROM problem_status WHERE solved = TRUE) ps ON ps.owner=id
-       GROUP BY us.id);
-
-CREATE OR REPLACE VIEW user_attempted_problems AS (SELECT
-       us.id,
-       COALESCE(array_agg(ps.problem) FILTER (WHERE ps.problem IS NOT NULL), ARRAY[]::text[]) AS attempted
-       FROM users us
-       LEFT JOIN (SELECT * FROM problem_status WHERE solved = FALSE) ps ON ps.owner=id
-       GROUP BY us.id);
-
-CREATE OR REPLACE VIEW user_contests AS (SELECT
-       us.id,
-       COALESCE(array_agg(cs.contest) FILTER (WHERE cs.contest IS NOT NULL), ARRAY[]::text[]) AS contests
-       FROM users us
-       LEFT JOIN contest_status cs ON cs.owner=id
-       GROUP BY us.id);
-
 CREATE OR REPLACE VIEW user_list AS (SELECT
        dt.*,
-       COALESCE(array_length(solved, 1), 0) AS solved,
-       COALESCE(array_length(attempted, 1), 0) AS attempted,
-       COALESCE(array_length(contests, 1), 0) AS contests
+       COALESCE(solved, 0) as solved,
+       COALESCE(attempted, 0) as attempted,
+       COALESCE(contests, 0) as contests
        FROM user_data dt
-       JOIN user_contests ct USING (id)
-       JOIN user_solved_problems sp USING (id)
-       JOIN user_attempted_problems ap USING (id)
+       LEFT JOIN (SELECT owner as id, COUNT(*) as solved FROM problem_status WHERE solved=TRUE GROUP BY owner) ps USING (id)
+       LEFT JOIN (SELECT owner as id, COUNT(*) as attempted FROM problem_status WHERE solved=FALSE GROUP BY owner) pa USING (id)
+       LEFT JOIN (SELECT owner as id, COUNT(*) as contests FROM contest_status GROUP BY owner) ct USING (id)
        ORDER BY solved DESC, attempted DESC, id);
 
 CREATE OR REPLACE VIEW contest_entry AS (SELECT