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- Due to applying a primary key constraint on app_name, instance_id, active installations with client_instances that have already violated this unique constraint will fail to migrate. - This commit drops all but the latest instance of each (app_name, instance_id) tuple, thus preparing the database for applying the unique constraint Co-authored-by: Ivar Conradi Osthus <ivarconr@gmail.com> Co-authored-by: Fredrik Strand Oseberg <fredrik.no@gmail.com>
22 lines
545 B
JavaScript
22 lines
545 B
JavaScript
'use strict';
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exports.up = function(db, cb) {
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db.runSql(
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`
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DELETE FROM client_instances a USING client_instances b WHERE a.app_name = b.app_name AND a.instance_id = b.instance_id AND a.created_at < b.created_at;
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ALTER TABLE client_instances ADD PRIMARY KEY (app_name, instance_id);
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`,
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cb,
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);
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};
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exports.down = function(db, cb) {
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db.runSql(
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`
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ALTER TABLE client_instances DROP CONSTRAINT client_instances_pkey;
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DROP INDEX IF EXISTS client_instance_pkey
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`,
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cb,
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);
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};
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