sql/
parser.rs

1// Copyright 2023 Greptime Team
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//     http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15use std::str::FromStr;
16
17use chrono::{DateTime, Utc};
18use snafu::{OptionExt, ResultExt};
19use sqlparser::ast::{Ident, Query, Value};
20use sqlparser::dialect::Dialect;
21use sqlparser::keywords::Keyword;
22use sqlparser::parser::{Parser, ParserError, ParserOptions};
23use sqlparser::tokenizer::{Token, TokenWithSpan};
24
25use crate::ast::{Expr, ObjectName};
26use crate::error::{self, InvalidSqlSnafu, Result, SyntaxSnafu};
27use crate::parsers::tql_parser;
28use crate::statements::kill::Kill;
29use crate::statements::statement::Statement;
30use crate::statements::transform_statements;
31
32pub const FLOW: &str = "FLOW";
33
34/// SQL Parser options.
35#[derive(Clone, Debug, Default)]
36pub struct ParseOptions {
37    /// If set, TQL parameter expressions containing `now()` will be evaluated
38    /// against this scheduled time instead of wall-clock time.
39    pub scheduled_time: Option<DateTime<Utc>>,
40}
41
42/// GrepTime SQL parser context, a simple wrapper for Datafusion SQL parser.
43pub struct ParserContext<'a> {
44    pub(crate) parser: Parser<'a>,
45    pub(crate) sql: &'a str,
46    /// Optional scheduled time for `now()` evaluation in TQL parameters.
47    pub(crate) scheduled_time: Option<DateTime<Utc>>,
48}
49
50impl ParserContext<'_> {
51    /// Construct a new ParserContext.
52    pub fn new<'a>(dialect: &'a dyn Dialect, sql: &'a str) -> Result<ParserContext<'a>> {
53        let parser = Parser::new(dialect)
54            .with_options(ParserOptions::new().with_trailing_commas(true))
55            .try_with_sql(sql)
56            .context(SyntaxSnafu)?;
57
58        Ok(ParserContext {
59            parser,
60            sql,
61            scheduled_time: None,
62        })
63    }
64
65    /// Parses parser context to Query.
66    pub fn parser_query(&mut self) -> Result<Box<Query>> {
67        self.parser.parse_query().context(SyntaxSnafu)
68    }
69
70    /// Parses SQL with given dialect
71    pub fn create_with_dialect(
72        sql: &str,
73        dialect: &dyn Dialect,
74        opts: ParseOptions,
75    ) -> Result<Vec<Statement>> {
76        let mut stmts: Vec<Statement> = Vec::new();
77
78        let mut parser_ctx = ParserContext::new(dialect, sql)?;
79        parser_ctx.scheduled_time = opts.scheduled_time;
80
81        let mut expecting_statement_delimiter = false;
82        loop {
83            // ignore empty statements (between successive statement delimiters)
84            while parser_ctx.parser.consume_token(&Token::SemiColon) {
85                expecting_statement_delimiter = false;
86            }
87
88            if parser_ctx.parser.peek_token() == Token::EOF {
89                break;
90            }
91            if expecting_statement_delimiter {
92                return parser_ctx.unsupported(parser_ctx.peek_token_as_string());
93            }
94
95            let statement = parser_ctx.parse_statement()?;
96            stmts.push(statement);
97            expecting_statement_delimiter = true;
98        }
99
100        transform_statements(&mut stmts)?;
101
102        Ok(stmts)
103    }
104
105    pub fn parse_table_name(sql: &str, dialect: &dyn Dialect) -> Result<ObjectName> {
106        let parser = Parser::new(dialect)
107            .with_options(ParserOptions::new().with_trailing_commas(true))
108            .try_with_sql(sql)
109            .context(SyntaxSnafu)?;
110        ParserContext {
111            parser,
112            sql,
113            scheduled_time: None,
114        }
115        .intern_parse_table_name()
116    }
117
118    pub(crate) fn intern_parse_table_name(&mut self) -> Result<ObjectName> {
119        let raw_table_name =
120            self.parser
121                .parse_object_name(false)
122                .context(error::UnexpectedSnafu {
123                    expected: "a table name",
124                    actual: self.parser.peek_token().to_string(),
125                })?;
126        Self::canonicalize_object_name(raw_table_name)
127    }
128
129    pub fn parse_function(sql: &str, dialect: &dyn Dialect) -> Result<Expr> {
130        let mut parser = Parser::new(dialect)
131            .with_options(ParserOptions::new().with_trailing_commas(true))
132            .try_with_sql(sql)
133            .context(SyntaxSnafu)?;
134
135        let function_name = parser.parse_identifier().context(SyntaxSnafu)?;
136        parser
137            .parse_function(vec![function_name].into())
138            .context(SyntaxSnafu)
139    }
140
141    /// Parses parser context to a set of statements.
142    pub fn parse_statement(&mut self) -> Result<Statement> {
143        match self.parser.peek_token().token {
144            Token::Word(w) => match w.keyword {
145                Keyword::CREATE => {
146                    let _ = self.parser.next_token();
147                    self.parse_create()
148                }
149
150                Keyword::EXPLAIN => {
151                    let _ = self.parser.next_token();
152                    self.parse_explain()
153                }
154
155                Keyword::SHOW => {
156                    let _ = self.parser.next_token();
157                    self.parse_show()
158                }
159
160                Keyword::DELETE => self.parse_delete(),
161
162                Keyword::DESCRIBE | Keyword::DESC => {
163                    let _ = self.parser.next_token();
164                    self.parse_describe()
165                }
166
167                Keyword::INSERT => self.parse_insert(),
168
169                Keyword::REPLACE => self.parse_replace(),
170
171                Keyword::SELECT | Keyword::VALUES => self.parse_query(),
172
173                Keyword::WITH => self.parse_with_tql(),
174
175                Keyword::ALTER => self.parse_alter(),
176
177                Keyword::DROP => self.parse_drop(),
178
179                Keyword::COPY => self.parse_copy(),
180
181                Keyword::TRUNCATE => self.parse_truncate(),
182
183                Keyword::COMMENT => self.parse_comment(),
184
185                Keyword::SET => self.parse_set_variables(),
186
187                Keyword::ADMIN => self.parse_admin_command(),
188
189                Keyword::NoKeyword
190                    if w.quote_style.is_none() && w.value.to_uppercase() == tql_parser::TQL =>
191                {
192                    self.parse_tql(false)
193                }
194
195                Keyword::DECLARE => self.parse_declare_cursor(),
196
197                Keyword::FETCH => self.parse_fetch_cursor(),
198
199                Keyword::CLOSE => self.parse_close_cursor(),
200
201                Keyword::USE => {
202                    let _ = self.parser.next_token();
203
204                    let database_name = self.parser.parse_identifier().with_context(|_| {
205                        error::UnexpectedSnafu {
206                            expected: "a database name",
207                            actual: self.peek_token_as_string(),
208                        }
209                    })?;
210                    Ok(Statement::Use(
211                        Self::canonicalize_identifier(database_name).value,
212                    ))
213                }
214
215                Keyword::KILL => {
216                    let _ = self.parser.next_token();
217                    let kill = if self.parser.parse_keyword(Keyword::QUERY) {
218                        // MySQL KILL QUERY <connection id> statements
219                        let connection_id_exp =
220                            self.parser.parse_number_value().with_context(|_| {
221                                error::UnexpectedSnafu {
222                                    expected: "MySQL numeric connection id",
223                                    actual: self.peek_token_as_string(),
224                                }
225                            })?;
226                        let Value::Number(s, _) = connection_id_exp.value else {
227                            return error::UnexpectedTokenSnafu {
228                                expected: "MySQL numeric connection id",
229                                actual: connection_id_exp.to_string(),
230                            }
231                            .fail();
232                        };
233
234                        let connection_id = u32::from_str(&s).map_err(|_| {
235                            error::UnexpectedTokenSnafu {
236                                expected: "MySQL numeric connection id",
237                                actual: s,
238                            }
239                            .build()
240                        })?;
241                        Kill::ConnectionId(connection_id)
242                    } else {
243                        let process_id_ident =
244                            self.parser.parse_literal_string().with_context(|_| {
245                                error::UnexpectedSnafu {
246                                    expected: "process id string literal",
247                                    actual: self.peek_token_as_string(),
248                                }
249                            })?;
250                        Kill::ProcessId(process_id_ident)
251                    };
252
253                    Ok(Statement::Kill(kill))
254                }
255
256                _ => self.unsupported(self.peek_token_as_string()),
257            },
258            Token::LParen => self.parse_query(),
259            unexpected => self.unsupported(unexpected.to_string()),
260        }
261    }
262
263    /// Parses MySQL style 'PREPARE stmt_name FROM stmt' into a (stmt_name, stmt) tuple.
264    pub fn parse_mysql_prepare_stmt(sql: &str, dialect: &dyn Dialect) -> Result<(String, String)> {
265        ParserContext::new(dialect, sql)?.parse_mysql_prepare()
266    }
267
268    /// Parses MySQL style 'EXECUTE stmt_name USING param_list' into a stmt_name string and a list of parameters.
269    pub fn parse_mysql_execute_stmt(
270        sql: &str,
271        dialect: &dyn Dialect,
272    ) -> Result<(String, Vec<Expr>)> {
273        ParserContext::new(dialect, sql)?.parse_mysql_execute()
274    }
275
276    /// Parses MySQL style 'DEALLOCATE stmt_name' into a stmt_name string.
277    pub fn parse_mysql_deallocate_stmt(sql: &str, dialect: &dyn Dialect) -> Result<String> {
278        ParserContext::new(dialect, sql)?.parse_deallocate()
279    }
280
281    /// Raises an "unsupported statement" error.
282    pub fn unsupported<T>(&self, keyword: String) -> Result<T> {
283        error::UnsupportedSnafu { keyword }.fail()
284    }
285
286    // Report unexpected token
287    pub(crate) fn expected<T>(&self, expected: &str, found: TokenWithSpan) -> Result<T> {
288        Err(ParserError::ParserError(format!(
289            "Expected {expected}, found: {found}",
290        )))
291        .context(SyntaxSnafu)
292    }
293
294    pub fn matches_keyword(&mut self, expected: Keyword) -> bool {
295        match self.parser.peek_token().token {
296            Token::Word(w) => w.keyword == expected,
297            _ => false,
298        }
299    }
300
301    pub fn consume_token(&mut self, expected: &str) -> bool {
302        if self.peek_token_as_string().to_uppercase() == *expected.to_uppercase() {
303            let _ = self.parser.next_token();
304            true
305        } else {
306            false
307        }
308    }
309
310    #[inline]
311    pub(crate) fn peek_token_as_string(&self) -> String {
312        self.parser.peek_token().to_string()
313    }
314
315    /// Canonicalize the identifier to lowercase if it's not quoted.
316    pub fn canonicalize_identifier(ident: Ident) -> Ident {
317        if ident.quote_style.is_some() {
318            ident
319        } else {
320            Ident::new(ident.value.to_lowercase())
321        }
322    }
323
324    /// Like [canonicalize_identifier] but for [ObjectName].
325    pub(crate) fn canonicalize_object_name(object_name: ObjectName) -> Result<ObjectName> {
326        object_name
327            .0
328            .into_iter()
329            .map(|x| {
330                x.as_ident()
331                    .cloned()
332                    .map(Self::canonicalize_identifier)
333                    .with_context(|| InvalidSqlSnafu {
334                        msg: format!("not an ident: '{x}'"),
335                    })
336            })
337            .collect::<Result<Vec<_>>>()
338            .map(Into::into)
339    }
340
341    /// Simply a shortcut for sqlparser's same name method `parse_object_name`,
342    /// but with constant argument "false".
343    /// Because the argument is always "false" for us (it's introduced by BigQuery),
344    /// we don't want to write it again and again.
345    pub(crate) fn parse_object_name(&mut self) -> std::result::Result<ObjectName, ParserError> {
346        self.parser.parse_object_name(false)
347    }
348}
349
350#[cfg(test)]
351mod tests {
352
353    use datatypes::prelude::ConcreteDataType;
354    use sqlparser::dialect::MySqlDialect;
355
356    use super::*;
357    use crate::dialect::GreptimeDbDialect;
358    use crate::statements::create::CreateTable;
359    use crate::statements::sql_data_type_to_concrete_data_type;
360
361    fn test_timestamp_precision(sql: &str, expected_type: ConcreteDataType) {
362        match ParserContext::create_with_dialect(
363            sql,
364            &GreptimeDbDialect {},
365            ParseOptions::default(),
366        )
367        .unwrap()
368        .pop()
369        .unwrap()
370        {
371            Statement::CreateTable(CreateTable { columns, .. }) => {
372                let ts_col = columns.first().unwrap();
373                assert_eq!(
374                    expected_type,
375                    sql_data_type_to_concrete_data_type(ts_col.data_type()).unwrap()
376                );
377            }
378            _ => unreachable!(),
379        }
380    }
381
382    #[test]
383    pub fn test_create_table_with_precision() {
384        test_timestamp_precision(
385            "create table demo (ts timestamp time index, cnt int);",
386            ConcreteDataType::timestamp_millisecond_datatype(),
387        );
388        test_timestamp_precision(
389            "create table demo (ts timestamp(0) time index, cnt int);",
390            ConcreteDataType::timestamp_second_datatype(),
391        );
392        test_timestamp_precision(
393            "create table demo (ts timestamp(3) time index, cnt int);",
394            ConcreteDataType::timestamp_millisecond_datatype(),
395        );
396        test_timestamp_precision(
397            "create table demo (ts timestamp(6) time index, cnt int);",
398            ConcreteDataType::timestamp_microsecond_datatype(),
399        );
400        test_timestamp_precision(
401            "create table demo (ts timestamp(9) time index, cnt int);",
402            ConcreteDataType::timestamp_nanosecond_datatype(),
403        );
404    }
405
406    #[test]
407    #[should_panic]
408    pub fn test_create_table_with_invalid_precision() {
409        test_timestamp_precision(
410            "create table demo (ts timestamp(1) time index, cnt int);",
411            ConcreteDataType::timestamp_millisecond_datatype(),
412        );
413    }
414
415    #[test]
416    pub fn test_parse_table_name() {
417        let table_name = "a.b.c";
418
419        let object_name =
420            ParserContext::parse_table_name(table_name, &GreptimeDbDialect {}).unwrap();
421
422        assert_eq!(object_name.0.len(), 3);
423        assert_eq!(object_name.to_string(), table_name);
424
425        let table_name = "a.b";
426
427        let object_name =
428            ParserContext::parse_table_name(table_name, &GreptimeDbDialect {}).unwrap();
429
430        assert_eq!(object_name.0.len(), 2);
431        assert_eq!(object_name.to_string(), table_name);
432
433        let table_name = "Test.\"public-test\"";
434
435        let object_name =
436            ParserContext::parse_table_name(table_name, &GreptimeDbDialect {}).unwrap();
437
438        assert_eq!(object_name.0.len(), 2);
439        assert_eq!(object_name.to_string(), table_name.to_ascii_lowercase());
440
441        let table_name = "HelloWorld";
442
443        let object_name =
444            ParserContext::parse_table_name(table_name, &GreptimeDbDialect {}).unwrap();
445
446        assert_eq!(object_name.0.len(), 1);
447        assert_eq!(object_name.to_string(), table_name.to_ascii_lowercase());
448    }
449
450    #[test]
451    pub fn test_parse_mysql_prepare_stmt() {
452        let sql = "PREPARE stmt1 FROM 'SELECT * FROM t1 WHERE id = ?';";
453        let (stmt_name, stmt) =
454            ParserContext::parse_mysql_prepare_stmt(sql, &MySqlDialect {}).unwrap();
455        assert_eq!(stmt_name, "stmt1");
456        assert_eq!(stmt, "SELECT * FROM t1 WHERE id = ?");
457
458        let sql = "PREPARE stmt2 FROM \"SELECT * FROM t1 WHERE id = ?\"";
459        let (stmt_name, stmt) =
460            ParserContext::parse_mysql_prepare_stmt(sql, &MySqlDialect {}).unwrap();
461        assert_eq!(stmt_name, "stmt2");
462        assert_eq!(stmt, "SELECT * FROM t1 WHERE id = ?");
463    }
464
465    #[test]
466    pub fn test_parse_mysql_execute_stmt() {
467        let sql = "EXECUTE stmt1 USING 1, 'hello';";
468        let (stmt_name, params) =
469            ParserContext::parse_mysql_execute_stmt(sql, &GreptimeDbDialect {}).unwrap();
470        assert_eq!(stmt_name, "stmt1");
471        assert_eq!(params.len(), 2);
472        assert_eq!(params[0].to_string(), "1");
473        assert_eq!(params[1].to_string(), "'hello'");
474
475        let sql = "EXECUTE stmt2;";
476        let (stmt_name, params) =
477            ParserContext::parse_mysql_execute_stmt(sql, &GreptimeDbDialect {}).unwrap();
478        assert_eq!(stmt_name, "stmt2");
479        assert_eq!(params.len(), 0);
480
481        let sql = "EXECUTE stmt3 USING 231, 'hello', \"2003-03-1\", NULL, ;";
482        let (stmt_name, params) =
483            ParserContext::parse_mysql_execute_stmt(sql, &GreptimeDbDialect {}).unwrap();
484        assert_eq!(stmt_name, "stmt3");
485        assert_eq!(params.len(), 4);
486        assert_eq!(params[0].to_string(), "231");
487        assert_eq!(params[1].to_string(), "'hello'");
488        assert_eq!(params[2].to_string(), "\"2003-03-1\"");
489        assert_eq!(params[3].to_string(), "NULL");
490    }
491
492    #[test]
493    pub fn test_parse_mysql_deallocate_stmt() {
494        let sql = "DEALLOCATE stmt1;";
495        let stmt_name = ParserContext::parse_mysql_deallocate_stmt(sql, &MySqlDialect {}).unwrap();
496        assert_eq!(stmt_name, "stmt1");
497
498        let sql = "DEALLOCATE stmt2";
499        let stmt_name = ParserContext::parse_mysql_deallocate_stmt(sql, &MySqlDialect {}).unwrap();
500        assert_eq!(stmt_name, "stmt2");
501    }
502
503    #[test]
504    pub fn test_parse_kill_query_statement() {
505        use crate::statements::kill::Kill;
506
507        // Test MySQL-style KILL QUERY with connection ID
508        let sql = "KILL QUERY 123";
509        let statements =
510            ParserContext::create_with_dialect(sql, &GreptimeDbDialect {}, ParseOptions::default())
511                .unwrap();
512
513        assert_eq!(statements.len(), 1);
514        match &statements[0] {
515            Statement::Kill(Kill::ConnectionId(connection_id)) => {
516                assert_eq!(*connection_id, 123);
517            }
518            _ => panic!("Expected Kill::ConnectionId statement"),
519        }
520
521        // Test with larger connection ID
522        let sql = "KILL QUERY 999999";
523        let statements =
524            ParserContext::create_with_dialect(sql, &GreptimeDbDialect {}, ParseOptions::default())
525                .unwrap();
526
527        assert_eq!(statements.len(), 1);
528        match &statements[0] {
529            Statement::Kill(Kill::ConnectionId(connection_id)) => {
530                assert_eq!(*connection_id, 999999);
531            }
532            _ => panic!("Expected Kill::ConnectionId statement"),
533        }
534    }
535
536    #[test]
537    pub fn test_parse_kill_process_statement() {
538        use crate::statements::kill::Kill;
539
540        // Test KILL with process ID string
541        let sql = "KILL 'process-123'";
542        let statements =
543            ParserContext::create_with_dialect(sql, &GreptimeDbDialect {}, ParseOptions::default())
544                .unwrap();
545
546        assert_eq!(statements.len(), 1);
547        match &statements[0] {
548            Statement::Kill(Kill::ProcessId(process_id)) => {
549                assert_eq!(process_id, "process-123");
550            }
551            _ => panic!("Expected Kill::ProcessId statement"),
552        }
553
554        // Test with double quotes
555        let sql = "KILL \"process-456\"";
556        let statements =
557            ParserContext::create_with_dialect(sql, &GreptimeDbDialect {}, ParseOptions::default())
558                .unwrap();
559
560        assert_eq!(statements.len(), 1);
561        match &statements[0] {
562            Statement::Kill(Kill::ProcessId(process_id)) => {
563                assert_eq!(process_id, "process-456");
564            }
565            _ => panic!("Expected Kill::ProcessId statement"),
566        }
567
568        // Test with UUID-like process ID
569        let sql = "KILL 'f47ac10b-58cc-4372-a567-0e02b2c3d479'";
570        let statements =
571            ParserContext::create_with_dialect(sql, &GreptimeDbDialect {}, ParseOptions::default())
572                .unwrap();
573
574        assert_eq!(statements.len(), 1);
575        match &statements[0] {
576            Statement::Kill(Kill::ProcessId(process_id)) => {
577                assert_eq!(process_id, "f47ac10b-58cc-4372-a567-0e02b2c3d479");
578            }
579            _ => panic!("Expected Kill::ProcessId statement"),
580        }
581    }
582
583    #[test]
584    pub fn test_parse_kill_statement_errors() {
585        // Test KILL QUERY without connection ID
586        let sql = "KILL QUERY";
587        let result =
588            ParserContext::create_with_dialect(sql, &GreptimeDbDialect {}, ParseOptions::default());
589        assert!(result.is_err());
590
591        // Test KILL QUERY with non-numeric connection ID
592        let sql = "KILL QUERY 'not-a-number'";
593        let result =
594            ParserContext::create_with_dialect(sql, &GreptimeDbDialect {}, ParseOptions::default());
595        assert!(result.is_err());
596
597        // Test KILL without any argument
598        let sql = "KILL";
599        let result =
600            ParserContext::create_with_dialect(sql, &GreptimeDbDialect {}, ParseOptions::default());
601        assert!(result.is_err());
602
603        // Test KILL QUERY with connection ID that's too large for u32
604        let sql = "KILL QUERY 4294967296"; // u32::MAX + 1
605        let result =
606            ParserContext::create_with_dialect(sql, &GreptimeDbDialect {}, ParseOptions::default());
607        assert!(result.is_err());
608    }
609
610    #[test]
611    pub fn test_parse_kill_statement_edge_cases() {
612        use crate::statements::kill::Kill;
613
614        // Test KILL QUERY with zero connection ID
615        let sql = "KILL QUERY 0";
616        let statements =
617            ParserContext::create_with_dialect(sql, &GreptimeDbDialect {}, ParseOptions::default())
618                .unwrap();
619
620        assert_eq!(statements.len(), 1);
621        match &statements[0] {
622            Statement::Kill(Kill::ConnectionId(connection_id)) => {
623                assert_eq!(*connection_id, 0);
624            }
625            _ => panic!("Expected Kill::ConnectionId statement"),
626        }
627
628        // Test KILL QUERY with maximum u32 value
629        let sql = "KILL QUERY 4294967295"; // u32::MAX
630        let statements =
631            ParserContext::create_with_dialect(sql, &GreptimeDbDialect {}, ParseOptions::default())
632                .unwrap();
633
634        assert_eq!(statements.len(), 1);
635        match &statements[0] {
636            Statement::Kill(Kill::ConnectionId(connection_id)) => {
637                assert_eq!(*connection_id, 4294967295);
638            }
639            _ => panic!("Expected Kill::ConnectionId statement"),
640        }
641
642        // Test KILL with empty string process ID
643        let sql = "KILL ''";
644        let statements =
645            ParserContext::create_with_dialect(sql, &GreptimeDbDialect {}, ParseOptions::default())
646                .unwrap();
647
648        assert_eq!(statements.len(), 1);
649        match &statements[0] {
650            Statement::Kill(Kill::ProcessId(process_id)) => {
651                assert_eq!(process_id, "");
652            }
653            _ => panic!("Expected Kill::ProcessId statement"),
654        }
655    }
656
657    #[test]
658    pub fn test_parse_kill_statement_case_insensitive() {
659        use crate::statements::kill::Kill;
660
661        // Test lowercase
662        let sql = "kill query 123";
663        let statements =
664            ParserContext::create_with_dialect(sql, &GreptimeDbDialect {}, ParseOptions::default())
665                .unwrap();
666
667        assert_eq!(statements.len(), 1);
668        match &statements[0] {
669            Statement::Kill(Kill::ConnectionId(connection_id)) => {
670                assert_eq!(*connection_id, 123);
671            }
672            _ => panic!("Expected Kill::ConnectionId statement"),
673        }
674
675        // Test mixed case
676        let sql = "Kill Query 456";
677        let statements =
678            ParserContext::create_with_dialect(sql, &GreptimeDbDialect {}, ParseOptions::default())
679                .unwrap();
680
681        assert_eq!(statements.len(), 1);
682        match &statements[0] {
683            Statement::Kill(Kill::ConnectionId(connection_id)) => {
684                assert_eq!(*connection_id, 456);
685            }
686            _ => panic!("Expected Kill::ConnectionId statement"),
687        }
688    }
689}
sql/parser.rs

sql/
parser.rs
