lemmy/migrations/2024-12-02-181601_add_report_combined_table/up.sql

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-- Creates combined tables for
-- Reports: (comment, post, and private_message)
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CREATE TABLE report_combined (
id serial PRIMARY KEY,
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published timestamptz NOT NULL,
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post_report_id int UNIQUE REFERENCES post_report ON UPDATE CASCADE ON DELETE CASCADE,
comment_report_id int UNIQUE REFERENCES comment_report ON UPDATE CASCADE ON DELETE CASCADE,
private_message_report_id int UNIQUE REFERENCES private_message_report ON UPDATE CASCADE ON DELETE CASCADE,
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-- Make sure only one of the columns is not null
CHECK (num_nonnulls (post_report_id, comment_report_id, private_message_report_id) = 1)
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);
CREATE INDEX idx_report_combined_published ON report_combined (published DESC, id DESC);
CREATE INDEX idx_report_combined_published_asc ON report_combined (reverse_timestamp_sort (published) DESC, id DESC);
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-- Updating the history
INSERT INTO report_combined (published, post_report_id, comment_report_id, private_message_report_id)
SELECT
published,
id,
NULL,
NULL
FROM
post_report
UNION ALL
SELECT
published,
NULL,
id,
NULL
FROM
comment_report
UNION ALL
SELECT
published,
NULL,
NULL,
id
FROM
private_message_report;