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Refactor get-lists query for speed

This commit is contained in:
Kailash Nadh 2020-11-21 17:29:24 +05:30
parent a22b274088
commit 62182ab979
1 changed files with 10 additions and 5 deletions
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15
queries.sql
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@ -294,11 +294,16 @@ UPDATE subscriber_lists SET status='unsubscribed', updated_at=NOW()
-- lists -- lists
-- name: get-lists -- name: get-lists
SELECT COUNT(*) OVER () AS total, lists.*, COUNT(subscriber_lists.subscriber_id) AS subscriber_count WITH ls AS (
FROM lists LEFT JOIN subscriber_lists SELECT COUNT(*) OVER () AS total, lists.* FROM lists
ON (subscriber_lists.list_id = lists.id AND subscriber_lists.status != 'unsubscribed') WHERE ($1 = 0 OR id = $1) OFFSET $2 LIMIT $3
WHERE ($1 = 0 OR id = $1) ),
GROUP BY lists.id ORDER BY %s %s OFFSET $2 LIMIT (CASE WHEN $3 = 0 THEN NULL ELSE $3 END); counts AS (
SELECT COUNT(*) as subscriber_count, list_id FROM subscriber_lists WHERE status != 'unsubscribed' GROUP BY list_id
)
SELECT ls.*, COALESCE(subscriber_count, 0) AS subscriber_count FROM ls
LEFT JOIN counts ON (counts.list_id = ls.id) ORDER BY %s %s;
-- name: get-lists-by-optin -- name: get-lists-by-optin
-- Can have a list of IDs or a list of UUIDs. -- Can have a list of IDs or a list of UUIDs.