sqlparser/dialect/
snowflake.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#[derive(Debug, Default)]
16pub struct SnowflakeDialect;
17
18impl Dialect for SnowflakeDialect {
19    // see https://docs.snowflake.com/en/sql-reference/identifiers-syntax.html
20    fn is_identifier_start(&self, ch: char) -> bool {
21        ch.is_ascii_lowercase() || ch.is_ascii_uppercase() || ch == '_'
22    }
23
24    fn is_identifier_part(&self, ch: char) -> bool {
25        ch.is_ascii_lowercase()
26            || ch.is_ascii_uppercase()
27            || ch.is_ascii_digit()
28            || ch == '$'
29            || ch == '_'
30    }
31
32    fn supports_within_after_array_aggregation(&self) -> bool {
33        true
34    }
35}