Support batch operation table

script/sql/create/operation.sql

@@ -30,3 +30,26 @@ create table restore_operation
 );
 
 insert into restore_operation (id) values (0);
+
+
+create table batch_operation
+(
+  id bigserial primary key
+, redo text not null
+, undo text not null
+, parent integer references operation(id) on delete cascade
+, redo_child integer references operation(id) -- must update before delete
+, redo_cs text not null
+, undo_cs text not null
+);
+
+insert into batch_operation (id, redo, undo, redo_cs, undo_cs) values (0, '', '', '', '');
+
+create type operation_table_option as enum ('operation', 'batch_operation');
+
+create table operation_table
+(
+  option operation_table_option primary key
+);
+
+insert into operation_table (option) values ('operation');