重构现代化 FastAPI 后端项目框架

resources/sql/create/operation.sql

@@ -0,0 +1,55 @@
+create table 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 operation (id, redo, undo, redo_cs, undo_cs) values (0, '', '', '', '');
+
+create table current_operation
+(
+  id bigint primary key references operation(id) -- must update before delete
+);
+
+insert into current_operation (id) values (0);
+
+create table snapshot_operation
+(
+  id bigint primary key references operation(id) on delete cascade
+, tag text not null unique
+);
+
+create table restore_operation
+(
+  id bigint primary key references operation(id) -- set after reading inp
+);
+
+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');