2 files changed, 24 insertions, 1 deletions

diff --git a/server/initializers/constants.ts b/server/initializers/constants.ts
index a88f9642c..03828f54f 100644
--- a/server/initializers/constants.ts
+++ b/server/initializers/constants.ts
@@ -12,7 +12,7 @@ let config: IConfig = require('config')
 
 // ---------------------------------------------------------------------------
 
-const LAST_MIGRATION_VERSION = 185
+const LAST_MIGRATION_VERSION = 190
 
 // ---------------------------------------------------------------------------
 
diff --git a/server/initializers/migrations/0190-video-comment-unique-url.ts b/server/initializers/migrations/0190-video-comment-unique-url.ts
new file mode 100644
index 000000000..b196c9352
--- /dev/null
+++ b/server/initializers/migrations/0190-video-comment-unique-url.ts
@@ -0,0 +1,23 @@
+import * as Sequelize from 'sequelize'
+
+async function up (utils: {
+  transaction: Sequelize.Transaction,
+  queryInterface: Sequelize.QueryInterface,
+  sequelize: Sequelize.Sequelize
+}): Promise<void> {
+  {
+    const query = 'DELETE FROM "videoComment" s1 ' +
+      'USING (SELECT MIN(id) as id, url FROM "videoComment" GROUP BY "url" HAVING COUNT(*) > 1) s2 ' +
+      'WHERE s1."url" = s2."url" AND s1.id <> s2.id'
+    await utils.sequelize.query(query)
+  }
+}
+
+function down (options) {
+  throw new Error('Not implemented.')
+}
+
+export {
+  up,
+  down
+}