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67 lines
2.1 KiB
Rust
67 lines
2.1 KiB
Rust
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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use crate::dialect::Dialect;
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/// A [`Dialect`] for [Databricks SQL](https://www.databricks.com/)
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///
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/// See <https://docs.databricks.com/en/sql/language-manual/index.html>.
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#[derive(Debug, Default)]
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pub struct DatabricksDialect;
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impl Dialect for DatabricksDialect {
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// see https://docs.databricks.com/en/sql/language-manual/sql-ref-identifiers.html
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fn is_delimited_identifier_start(&self, ch: char) -> bool {
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matches!(ch, '`')
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}
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fn is_identifier_start(&self, ch: char) -> bool {
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matches!(ch, 'a'..='z' | 'A'..='Z' | '_')
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}
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fn is_identifier_part(&self, ch: char) -> bool {
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matches!(ch, 'a'..='z' | 'A'..='Z' | '0'..='9' | '_')
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}
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fn supports_filter_during_aggregation(&self) -> bool {
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true
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}
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// https://docs.databricks.com/en/sql/language-manual/sql-ref-syntax-qry-select-groupby.html
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fn supports_group_by_expr(&self) -> bool {
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true
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}
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fn supports_lambda_functions(&self) -> bool {
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true
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}
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// https://docs.databricks.com/en/sql/language-manual/sql-ref-syntax-qry-select.html#syntax
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fn supports_select_wildcard_except(&self) -> bool {
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true
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}
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fn require_interval_qualifier(&self) -> bool {
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true
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}
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// See https://docs.databricks.com/en/sql/language-manual/functions/struct.html
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fn supports_struct_literal(&self) -> bool {
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true
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}
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}
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