databend_common_ast/ast/statements/set.rs
1// Copyright 2021 Datafuse Labs
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7// http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15use derive_visitor::Drive;
16use derive_visitor::DriveMut;
17
18use crate::ast::Expr;
19use crate::ast::Query;
20
21// settings: set a = xxx
22// variable: set variable a = xxx
23#[derive(Debug, Copy, Default, Clone, PartialEq, Eq, Drive, DriveMut)]
24pub enum SetType {
25 #[default]
26 SettingsSession,
27 SettingsGlobal,
28 Variable,
29 SettingsQuery,
30}
31
32#[derive(Debug, Clone, PartialEq, Drive, DriveMut)]
33pub enum SetValues {
34 Expr(Vec<Box<Expr>>),
35 Query(Box<Query>),
36 // None means Unset Stmt
37 None,
38}