sqlparser/dialect/
bigquery.rs

1// Licensed under the Apache License, Version 2.0 (the "License");
2// you may not use this file except in compliance with the License.
3// You may obtain a copy of the License at
4//
5// http://www.apache.org/licenses/LICENSE-2.0
6//
7// Unless required by applicable law or agreed to in writing, software
8// distributed under the License is distributed on an "AS IS" BASIS,
9// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
10// See the License for the specific language governing permissions and
11// limitations under the License.
12
13use crate::dialect::Dialect;
14
15/// A [`Dialect`] for [Google Bigquery](https://cloud.google.com/bigquery/)
16#[derive(Debug, Default)]
17pub struct BigQueryDialect;
18
19impl Dialect for BigQueryDialect {
20    // See https://cloud.google.com/bigquery/docs/reference/standard-sql/lexical#identifiers
21    fn is_delimited_identifier_start(&self, ch: char) -> bool {
22        ch == '`'
23    }
24
25    fn is_identifier_start(&self, ch: char) -> bool {
26        ch.is_ascii_lowercase() || ch.is_ascii_uppercase() || ch == '_'
27    }
28
29    fn is_identifier_part(&self, ch: char) -> bool {
30        ch.is_ascii_lowercase() || ch.is_ascii_uppercase() || ch.is_ascii_digit() || ch == '_'
31    }
32}