1 files changed, 40 insertions, 0 deletions
diff --git a/db/migrate/20211118103439_remove_hardcoded_partition_from_loose_fk_trigger_function.rb b/db/migrate/20211118103439_remove_hardcoded_partition_from_loose_fk_trigger_function.rb
new file mode 100644
index 00000000000..33159167b19
--- /dev/null
+++ b/db/migrate/20211118103439_remove_hardcoded_partition_from_loose_fk_trigger_function.rb
@@ -0,0 +1,40 @@
+# frozen_string_literal: true
+
+class RemoveHardcodedPartitionFromLooseFkTriggerFunction < Gitlab::Database::Migration[1.0]
+  include Gitlab::Database::MigrationHelpers::LooseForeignKeyHelpers
+
+  enable_lock_retries!
+
+  def up
+    execute(<<~SQL)
+      CREATE OR REPLACE FUNCTION #{DELETED_RECORDS_INSERT_FUNCTION_NAME}()
+      RETURNS TRIGGER AS
+      $$
+      BEGIN
+        INSERT INTO loose_foreign_keys_deleted_records
+        (fully_qualified_table_name, primary_key_value)
+        SELECT TG_TABLE_SCHEMA || '.' || TG_TABLE_NAME, old_table.id FROM old_table;
+
+        RETURN NULL;
+      END
+      $$ LANGUAGE PLPGSQL
+    SQL
+  end
+
+  def down
+    execute(<<~SQL)
+      CREATE OR REPLACE FUNCTION #{DELETED_RECORDS_INSERT_FUNCTION_NAME}()
+      RETURNS TRIGGER AS
+      $$
+      BEGIN
+        INSERT INTO loose_foreign_keys_deleted_records
+        (partition, fully_qualified_table_name, primary_key_value)
+        SELECT 1, TG_TABLE_SCHEMA || '.' || TG_TABLE_NAME, old_table.id FROM old_table
+        ON CONFLICT DO NOTHING;
+
+        RETURN NULL;
+      END
+      $$ LANGUAGE PLPGSQL
+    SQL
+  end
+end