traxxx/migrations/20230703013413_random_campa...

59 lines
1.8 KiB
JavaScript
Raw Normal View History

2023-07-05 22:14:38 +00:00
exports.up = async (knex) => {
await knex.schema.alterTable('random_campaign', (table) => {
table.integer('id')
.notNullable()
.references('id')
.inTable('campaigns');
});
await knex.raw(`
CREATE OR REPLACE FUNCTION get_random_campaign(min_ratio decimal default 0, max_ratio decimal default 1000.0) RETURNS random_campaign AS $$
SELECT * FROM (
SELECT DISTINCT ON (CASE WHEN parent_id IS NOT NULL THEN parent_id ELSE entity_id END)
banner_id, url, entity_id, affiliate_id, parent_id, id
FROM (
SELECT
campaigns.*, entities.parent_id as parent_id
FROM campaigns
LEFT JOIN entities ON entities.id = campaigns.entity_id
LEFT JOIN banners ON banners.id = campaigns.banner_id
WHERE banner_id IS NOT NULL
AND ratio >= min_ratio
AND ratio <= max_ratio
ORDER BY RANDOM()
) random_campaigns
) random_banners
ORDER BY RANDOM()
LIMIT 1;
$$ LANGUAGE SQL STABLE;
`);
};
exports.down = async (knex) => {
await knex.schema.alterTable('random_campaign', (table) => {
table.dropColumn('campaign_id');
});
await knex.raw(`
CREATE OR REPLACE FUNCTION get_random_campaign(min_ratio decimal default 0, max_ratio decimal default 1000.0) RETURNS random_campaign AS $$
SELECT * FROM (
SELECT DISTINCT ON (CASE WHEN parent_id IS NOT NULL THEN parent_id ELSE entity_id END)
banner_id, url, entity_id, affiliate_id, parent_id
FROM (
SELECT
campaigns.*, entities.parent_id as parent_id
FROM campaigns
LEFT JOIN entities ON entities.id = campaigns.entity_id
LEFT JOIN banners ON banners.id = campaigns.banner_id
WHERE banner_id IS NOT NULL
AND ratio >= min_ratio
AND ratio <= max_ratio
ORDER BY RANDOM()
) random_campaigns
) random_banners
ORDER BY RANDOM()
LIMIT 1;
$$ LANGUAGE SQL STABLE;
`);
};