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// Copyright 2021 Datafuse Labs
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
use derive_visitor::Drive;
use derive_visitor::DriveMut;
use crate::ast::Expr;
use crate::ast::Query;
// settings: set a = xxx
// variable: set variable a = xxx
#[derive(Debug, Copy, Default, Clone, PartialEq, Eq, Drive, DriveMut)]
pub enum SetType {
#[default]
SettingsSession,
SettingsGlobal,
Variable,
SettingsQuery,
}
#[derive(Debug, Clone, PartialEq, Drive, DriveMut)]
pub enum SetValues {
Expr(Vec<Box<Expr>>),
Query(Box<Query>),
// None means Unset Stmt
None,
}