Refactor opt-in subscriber selection queries
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queries.sql
29
queries.sql
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@ -456,12 +456,18 @@ counts AS (
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FROM camps
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LEFT JOIN campLists ON (campLists.campaign_id = camps.id)
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LEFT JOIN subscriber_lists ON (
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subscriber_lists.status != 'unsubscribed' AND
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subscriber_lists.list_id = campLists.list_id AND
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(CASE
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-- For optin campaigns, only e-mail 'unconfirmed' subscribers belonging to 'double' optin lists.
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WHEN camps.type = 'optin' THEN subscriber_lists.status = 'unconfirmed' AND campLists.optin = 'double'
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-- For double opt-in lists, consider only 'confirmed' subscriptions. For single opt-ins,
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-- any status except for 'unsubscribed' (already excluded above) works.
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(CASE WHEN campLists.optin = 'double' THEN subscriber_lists.status = 'confirmed' ELSE true END)
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-- For regular campaigns with double optin lists, only e-mail 'confirmed' subscribers.
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WHEN campLists.optin = 'double' THEN subscriber_lists.status = 'confirmed'
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-- For regular campaigns with non-double optin lists, e-mail everyone
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-- except unsubscribed subscribers.
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ELSE subscriber_lists.status != 'unsubscribed'
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END)
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)
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GROUP BY camps.id
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),
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@ -482,7 +488,7 @@ SELECT * FROM camps;
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-- (last_subscriber_id). Every fetch updates the checkpoint and the sent count, which means
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-- every fetch returns a new batch of subscribers until all rows are exhausted.
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WITH camps AS (
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SELECT last_subscriber_id, max_subscriber_id
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SELECT last_subscriber_id, max_subscriber_id, type
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FROM campaigns
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WHERE id=$1 AND status='running'
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),
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@ -499,7 +505,18 @@ subs AS (
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INNER JOIN subscribers ON (
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subscribers.status != 'blacklisted' AND
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subscribers.id = subscriber_lists.subscriber_id AND
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(CASE WHEN campLists.optin = 'double' THEN subscriber_lists.status = 'confirmed' ELSE true END)
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(CASE
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-- For optin campaigns, only e-mail 'unconfirmed' subscribers.
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WHEN (SELECT type FROM camps) = 'optin' THEN subscriber_lists.status = 'unconfirmed' AND campLists.optin = 'double'
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-- For regular campaigns with double optin lists, only e-mail 'confirmed' subscribers.
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WHEN campLists.optin = 'double' THEN subscriber_lists.status = 'confirmed'
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-- For regular campaigns with non-double optin lists, e-mail everyone
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-- except unsubscribed subscribers.
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ELSE subscriber_lists.status != 'unsubscribed'
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END)
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)
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WHERE subscriber_lists.status != 'unsubscribed' AND
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id > (SELECT last_subscriber_id FROM camps) AND
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