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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}