sqlparser/dialect/
oracle.rs

1// Licensed to the Apache Software Foundation (ASF) under one
2// or more contributor license agreements.  See the NOTICE file
3// distributed with this work for additional information
4// regarding copyright ownership.  The ASF licenses this file
5// to you under the Apache License, Version 2.0 (the
6// "License"); you may not use this file except in compliance
7// with the License.  You may obtain a copy of the License at
8//
9//   http://www.apache.org/licenses/LICENSE-2.0
10//
11// Unless required by applicable law or agreed to in writing,
12// software distributed under the License is distributed on an
13// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
14// KIND, either express or implied.  See the License for the
15// specific language governing permissions and limitations
16// under the License.
17
18use log::debug;
19
20use crate::{
21    parser::{Parser, ParserError},
22    tokenizer::Token,
23};
24
25use super::{keywords::Keyword, Dialect, Precedence};
26
27const RESERVED_KEYWORDS_FOR_SELECT_ITEM_OPERATOR: [Keyword; 1] = [Keyword::CONNECT_BY_ROOT];
28
29/// A [`Dialect`] for [Oracle Databases](https://docs.oracle.com/en/database/oracle/oracle-database/21/sqlrf/index.html)
30#[derive(#[automatically_derived]
impl ::core::fmt::Debug for OracleDialect {
    #[inline]
    fn fmt(&self, f: &mut ::core::fmt::Formatter) -> ::core::fmt::Result {
        ::core::fmt::Formatter::write_str(f, "OracleDialect")
    }
}Debug, #[automatically_derived]
impl ::core::default::Default for OracleDialect {
    #[inline]
    fn default() -> OracleDialect { OracleDialect {} }
}Default, #[automatically_derived]
impl ::core::clone::Clone for OracleDialect {
    #[inline]
    fn clone(&self) -> OracleDialect { *self }
}Clone, #[automatically_derived]
impl ::core::marker::Copy for OracleDialect { }Copy, #[automatically_derived]
impl ::core::cmp::PartialEq for OracleDialect {
    #[inline]
    fn eq(&self, other: &OracleDialect) -> bool { true }
}PartialEq, #[automatically_derived]
impl ::core::cmp::Eq for OracleDialect {
    #[inline]
    #[doc(hidden)]
    #[coverage(off)]
    fn assert_fields_are_eq(&self) {}
}Eq, #[automatically_derived]
impl ::core::hash::Hash for OracleDialect {
    #[inline]
    fn hash<__H: ::core::hash::Hasher>(&self, state: &mut __H) {}
}Hash, #[automatically_derived]
impl ::core::cmp::PartialOrd for OracleDialect {
    #[inline]
    fn partial_cmp(&self, other: &OracleDialect)
        -> ::core::option::Option<::core::cmp::Ordering> {
        ::core::option::Option::Some(::core::cmp::Ordering::Equal)
    }
}PartialOrd, #[automatically_derived]
impl ::core::cmp::Ord for OracleDialect {
    #[inline]
    fn cmp(&self, other: &OracleDialect) -> ::core::cmp::Ordering {
        ::core::cmp::Ordering::Equal
    }
}Ord)]
31#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
32pub struct OracleDialect;
33
34impl Dialect for OracleDialect {
35    // ~ appears not to be called anywhere
36    fn identifier_quote_style(&self, _identifier: &str) -> Option<char> {
37        Some('"')
38    }
39
40    fn is_delimited_identifier_start(&self, ch: char) -> bool {
41        ch == '"'
42    }
43
44    fn is_identifier_start(&self, ch: char) -> bool {
45        ch.is_alphabetic()
46    }
47
48    fn is_identifier_part(&self, ch: char) -> bool {
49        ch.is_alphanumeric() || ch == '_' || ch == '$' || ch == '#' || ch == '@'
50    }
51
52    fn supports_outer_join_operator(&self) -> bool {
53        true
54    }
55
56    fn supports_connect_by(&self) -> bool {
57        true
58    }
59
60    fn supports_execute_immediate(&self) -> bool {
61        true
62    }
63
64    fn supports_match_recognize(&self) -> bool {
65        true
66    }
67
68    fn supports_window_function_null_treatment_arg(&self) -> bool {
69        true
70    }
71
72    fn supports_boolean_literals(&self) -> bool {
73        false
74    }
75
76    fn supports_comment_on(&self) -> bool {
77        true
78    }
79
80    fn supports_create_table_select(&self) -> bool {
81        true
82    }
83
84    fn supports_set_stmt_without_operator(&self) -> bool {
85        true
86    }
87
88    fn get_next_precedence(&self, parser: &Parser) -> Option<Result<u8, ParserError>> {
89        let t = parser.peek_token();
90        {
    {
        let lvl = ::log::Level::Debug;
        if lvl <= ::log::STATIC_MAX_LEVEL && lvl <= ::log::max_level() {
            ::log::__private_api::log({ ::log::__private_api::GlobalLogger },
                format_args!("get_next_precedence() {0:?}", t), lvl,
                &("sqlparser::dialect::oracle", "sqlparser::dialect::oracle",
                        ::log::__private_api::loc()), ());
        }
    }
};debug!("get_next_precedence() {t:?}");
91
92        match t.token {
93            Token::StringConcat => Some(Ok(self.prec_value(Precedence::PlusMinus))),
94            _ => None,
95        }
96    }
97
98    fn supports_group_by_expr(&self) -> bool {
99        true
100    }
101
102    fn get_reserved_keywords_for_select_item_operator(&self) -> &[Keyword] {
103        &RESERVED_KEYWORDS_FOR_SELECT_ITEM_OPERATOR
104    }
105
106    fn supports_quote_delimited_string(&self) -> bool {
107        true
108    }
109
110    fn supports_comment_optimizer_hint(&self) -> bool {
111        true
112    }
113}
sqlparser/dialect/oracle.rs

sqlparser/dialect/
oracle.rs
