56 lines
2.1 KiB
SQL
56 lines
2.1 KiB
SQL
-- we don't want to have to update our zap_rank views
|
|
-- when constants change. so we'll just make a view that we can update
|
|
CREATE OR REPLACE VIEW zap_rank_constants AS
|
|
SELECT
|
|
5000.0 AS boost_per_vote,
|
|
1.2 AS vote_power,
|
|
1.3 AS vote_decay,
|
|
3.0 AS age_wait_hours,
|
|
0.5 AS comment_scaler,
|
|
2.2 AS boost_power,
|
|
2.6 AS boost_decay,
|
|
2100 AS row_limit;
|
|
|
|
CREATE MATERIALIZED VIEW IF NOT EXISTS zap_rank_wwm_view AS
|
|
SELECT id, rank() OVER (ORDER BY
|
|
(
|
|
(GREATEST("weightedVotes", POWER("weightedVotes", vote_power)) + "weightedComments"*comment_scaler)
|
|
/
|
|
POWER(GREATEST(age_wait_hours, EXTRACT(EPOCH FROM (now_utc() - created_at))/3600), vote_decay)
|
|
+
|
|
POWER(boost/boost_per_vote, boost_power)
|
|
/
|
|
POWER(GREATEST(age_wait_hours, EXTRACT(EPOCH FROM (now_utc() - created_at))/3600), boost_decay)
|
|
) DESC NULLS LAST, id DESC) AS rank
|
|
FROM "Item", zap_rank_constants
|
|
WHERE "parentId" IS NULL
|
|
AND NOT bio
|
|
AND "pinId" IS NULL
|
|
AND "deletedAt" IS NULL
|
|
AND ("weightedVotes" > 0 OR boost > 0)
|
|
ORDER BY rank ASC
|
|
LIMIT (SELECT row_limit FROM zap_rank_constants);
|
|
|
|
CREATE UNIQUE INDEX IF NOT EXISTS zap_rank_wwm_view_idx ON zap_rank_wwm_view(rank ASC);
|
|
|
|
CREATE MATERIALIZED VIEW IF NOT EXISTS zap_rank_tender_view AS
|
|
SELECT id, rank() OVER (ORDER BY
|
|
(
|
|
(GREATEST(ABS("weightedVotes" - "weightedDownVotes"), POWER(ABS("weightedVotes" - "weightedDownVotes"), vote_power)) + "weightedComments"*comment_scaler)
|
|
/
|
|
POWER(GREATEST(age_wait_hours, EXTRACT(EPOCH FROM (now_utc() - created_at))/3600), vote_decay)
|
|
+
|
|
POWER(boost/boost_per_vote, boost_power)
|
|
/
|
|
POWER(GREATEST(age_wait_hours, EXTRACT(EPOCH FROM (now_utc() - created_at))/3600), boost_decay)
|
|
) DESC NULLS LAST, id DESC) AS rank
|
|
FROM "Item", zap_rank_constants
|
|
WHERE "parentId" IS NULL
|
|
AND NOT bio
|
|
AND "pinId" IS NULL
|
|
AND "deletedAt" IS NULL
|
|
AND ("weightedVotes" > "weightedDownVotes" OR boost > 0)
|
|
ORDER BY rank ASC
|
|
LIMIT (SELECT row_limit FROM zap_rank_constants);
|
|
|
|
CREATE UNIQUE INDEX IF NOT EXISTS zap_rank_tender_view_idx ON zap_rank_tender_view(rank ASC); |