server/initializers/migrations/0755-unique-viewer-url.ts

   1 import * as Sequelize from 'sequelize'
   2
   3 async function up (utils: {
   4   transaction: Sequelize.Transaction
   5   queryInterface: Sequelize.QueryInterface
   6   sequelize: Sequelize.Sequelize
   7   db: any
   8 }): Promise<void> {
   9   const { transaction } = utils
  10
  11   const query = 'DELETE FROM "localVideoViewer" t1 ' +
  12   'USING (SELECT MIN(id) as id, "url" FROM "localVideoViewer" GROUP BY "url" HAVING COUNT(*) > 1) t2 ' +
  13   'WHERE t1."url" = t2."url" AND t1.id <> t2.id'
  14
  15   await utils.sequelize.query(query, { transaction })
  16 }
  17
  18 async function down (utils: {
  19   queryInterface: Sequelize.QueryInterface
  20   transaction: Sequelize.Transaction
  21 }) {
  22 }
  23
  24 export {
  25   up,
  26   down
  27 }