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-rw-r--r--db/post_migrate/20190715044501_add_unique_issue_id_sha_index_to_versions.rb17
1 files changed, 17 insertions, 0 deletions
diff --git a/db/post_migrate/20190715044501_add_unique_issue_id_sha_index_to_versions.rb b/db/post_migrate/20190715044501_add_unique_issue_id_sha_index_to_versions.rb
new file mode 100644
index 00000000000..27b0c9648f9
--- /dev/null
+++ b/db/post_migrate/20190715044501_add_unique_issue_id_sha_index_to_versions.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+class AddUniqueIssueIdShaIndexToVersions < ActiveRecord::Migration[5.2]
+ include Gitlab::Database::MigrationHelpers
+
+ DOWNTIME = false
+
+ disable_ddl_transaction!
+
+ def up
+ add_concurrent_index :design_management_versions, [:sha, :issue_id], unique: true, using: :btree
+ end
+
+ def down
+ remove_concurrent_index :design_management_versions, [:sha, :issue_id]
+ end
+end