From 2d619438b1183a2bdc5f9405096ba82037e9be37 Mon Sep 17 00:00:00 2001 From: k00b Date: Fri, 21 Mar 2025 19:40:03 -0500 Subject: [PATCH] make hot_score_view editable through parameters of another view --- .../migration.sql | 35 +++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 prisma/migrations/20250321225044_dynamic_hot_score_view/migration.sql diff --git a/prisma/migrations/20250321225044_dynamic_hot_score_view/migration.sql b/prisma/migrations/20250321225044_dynamic_hot_score_view/migration.sql new file mode 100644 index 00000000..5461910f --- /dev/null +++ b/prisma/migrations/20250321225044_dynamic_hot_score_view/migration.sql @@ -0,0 +1,35 @@ +CREATE OR REPLACE VIEW hot_score_constants AS + SELECT 10000.0 AS boost_per_vote, + 1.0 AS vote_power, + 1.1 AS vote_decay, + 3 AS age_wait_hours, + 0.25 AS comment_vote_scaler; + +CREATE MATERIALIZED VIEW IF NOT EXISTS hot_score_view_temp AS + SELECT id, + CASE WHEN "Item"."weightedVotes" - "Item"."weightedDownVotes" > 0 + THEN (POWER("Item"."weightedVotes" - "Item"."weightedDownVotes", hot_score_constants.vote_power) + + "Item"."weightedComments"*hot_score_constants.comment_vote_scaler + + "Item".boost / hot_score_constants.boost_per_vote) + / POWER(GREATEST(hot_score_constants.age_wait_hours, EXTRACT(EPOCH FROM (now() - "Item".created_at))/3600), hot_score_constants.vote_decay) + ELSE "Item"."weightedVotes" - "Item"."weightedDownVotes" END AS hot_score, + CASE WHEN "Item"."subWeightedVotes" - "Item"."subWeightedDownVotes" > 0 + THEN (POWER("Item"."subWeightedVotes" - "Item"."subWeightedDownVotes", hot_score_constants.vote_power) + + "Item"."weightedComments"*hot_score_constants.comment_vote_scaler + + "Item".boost / hot_score_constants.boost_per_vote) + / POWER(GREATEST(hot_score_constants.age_wait_hours, EXTRACT(EPOCH FROM (now() - "Item".created_at))/3600), hot_score_constants.vote_decay) + ELSE "Item"."subWeightedVotes" - "Item"."subWeightedDownVotes" END AS sub_hot_score + FROM "Item", hot_score_constants + WHERE "Item"."weightedVotes" > 0 OR "Item"."weightedDownVotes" > 0 OR "Item"."subWeightedVotes" > 0 + OR "Item"."subWeightedDownVotes" > 0 OR "Item"."weightedComments" > 0 OR "Item".boost > 0; + +DROP MATERIALIZED VIEW IF EXISTS hot_score_view; +ALTER MATERIALIZED VIEW hot_score_view_temp RENAME TO hot_score_view; + +CREATE UNIQUE INDEX IF NOT EXISTS hot_score_view_id_idx ON hot_score_view(id); +CREATE INDEX IF NOT EXISTS hot_score_view_hot_score_idx ON hot_score_view(hot_score DESC NULLS LAST); +CREATE INDEX IF NOT EXISTS hot_score_view_sub_hot_score_idx ON hot_score_view(sub_hot_score DESC NULLS LAST); +CREATE INDEX IF NOT EXISTS hot_score_view_hot_score_no_nulls_idx ON hot_score_view(hot_score DESC); +CREATE INDEX IF NOT EXISTS hot_score_view_sub_hot_score_no_nulls_idx ON hot_score_view(sub_hot_score DESC); + +