checker: allow using struct field as ORM limit and offset. (#17330)

vlib/orm/orm_test.v

@@ -34,6 +34,33 @@ struct TestTime {
 	create time.Time
 }
 
+fn test_use_struct_field_as_limit() {
+	db := sqlite.connect(':memory:') or { panic(err) }
+
+	sql db {
+		create table User
+	}
+
+	foo := Foo{
+		age: 10
+	}
+
+	sam := User{
+		age: 29
+		name: 'Sam'
+	}
+
+	sql db {
+		insert sam into User
+	}
+
+	users := sql db {
+		select from User limit foo.age
+	}
+
+	assert users.len == 1
+}
+
 fn test_orm() {
 	db := sqlite.connect(':memory:') or { panic(err) }
 

vlib/v/checker/orm.v

@@ -348,6 +348,10 @@ fn (mut c Checker) check_sql_expr_type_is_int(expr &ast.Expr, sql_keyword string
 		if expr.obj.typ.is_int() {
 			return
 		}
+	} else if expr is ast.SelectorExpr {
+		if expr.typ.is_int() {
+			return
+		}
 	} else if expr is ast.CallExpr {
 		if expr.return_type == 0 {
 			return