Skip creating ps_crud entries when clearing raw tables (#169)

Author: simolus3

crates/core/src/view_admin.rs

@@ -122,6 +122,11 @@ DELETE FROM {table};",
     }
 
     if let Some(schema) = state.view_schema() {
+        // Pretend to be in a sync_local step when clearing raw tables. Similar to the case above
+        // where we delete from the underlying table to sidestep the CRUD trigger, we don't want
+        // triggers on raw tables to record this delete in ps_crud.
+        let _skip_crud = state.sync_local_guard();
+
         for raw_table in &schema.raw_tables {
             if let Some(stmt) = &raw_table.clear {
                 local_db.exec_safe(&stmt).map_err(|e| {

dart/test/crud_test.dart

@@ -946,6 +946,26 @@ void main() {
         db.execute('UPDATE users SET name = ?', ['name']);
         expect(db.select('SELECT * FROM ps_crud'), hasLength(1));
       });
+
+      test('clearing raw tables does not create crud entries', () {
+        db.execute('CREATE TABLE users (id TEXT, name TEXT) STRICT;');
+        db.execute(
+            'INSERT INTO users (id, name) VALUES (uuid(), ?)', ['test user']);
+
+        createRawTableTriggers(rawTableDescription(
+            {'table_name': 'users', 'ignore_empty_update': true}));
+        db.execute('select powersync_replace_schema(?)', [
+          json.encode({
+            'tables': [],
+            'raw_tables': [
+              rawTableDescription({'clear': 'DELETE FROM users'})
+            ]
+          })
+        ]);
+
+        db.execute('SELECT powersync_clear(2)');
+        expect(db.select('SELECT * FROM ps_crud'), isEmpty);
+      });
     });
   });
 }