risingwave_sqlparser/ast/
statement.rs

1// Copyright 2025 RisingWave Labs
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 core::fmt;
16use core::fmt::Formatter;
17use std::fmt::Write;
18
19use itertools::Itertools;
20#[cfg(feature = "serde")]
21use serde::{Deserialize, Serialize};
22use winnow::ModalResult;
23
24use super::ddl::SourceWatermark;
25use super::legacy_source::{CompatibleFormatEncode, parse_format_encode};
26use super::{EmitMode, Ident, ObjectType, Query, Value};
27use crate::ast::{
28    ColumnDef, ObjectName, SqlOption, TableConstraint, display_comma_separated, display_separated,
29};
30use crate::keywords::Keyword;
31use crate::parser::{IncludeOption, IsOptional, Parser};
32use crate::parser_err;
33use crate::parser_v2::literal_u32;
34use crate::tokenizer::Token;
35
36/// Consumes token from the parser into an AST node.
37pub trait ParseTo: Sized {
38    fn parse_to(parser: &mut Parser<'_>) -> ModalResult<Self>;
39}
40
41#[macro_export]
42macro_rules! impl_parse_to {
43    () => {};
44    ($field:ident : $field_type:ty, $parser:ident) => {
45        let $field = <$field_type>::parse_to($parser)?;
46    };
47    ($field:ident => [$($arr:tt)+], $parser:ident) => {
48        let $field = $parser.parse_keywords(&[$($arr)+]);
49    };
50    ([$($arr:tt)+], $parser:ident) => {
51        $parser.expect_keywords(&[$($arr)+])?;
52    };
53}
54
55#[macro_export]
56macro_rules! impl_fmt_display {
57    () => {};
58    ($field:ident, $v:ident, $self:ident) => {{
59        let s = format!("{}", $self.$field);
60        if !s.is_empty() {
61            $v.push(s);
62        }
63    }};
64    ($field:ident => [$($arr:tt)+], $v:ident, $self:ident) => {
65        if $self.$field {
66            $v.push(format!("{}", display_separated(&[$($arr)+], " ")));
67        }
68    };
69    ([$($arr:tt)+], $v:ident) => {
70        $v.push(format!("{}", display_separated(&[$($arr)+], " ")));
71    };
72}
73
74// sql_grammar!(CreateSourceStatement {
75//     if_not_exists => [Keyword::IF, Keyword::NOT, Keyword::EXISTS],
76//     source_name: Ident,
77//     with_properties: AstOption<WithProperties>,
78//     [Keyword::ROW, Keyword::FORMAT],
79//     format_encode: SourceSchema,
80//     [Keyword::WATERMARK, Keyword::FOR] column [Keyword::AS] <expr>
81// });
82#[derive(Debug, Clone, PartialEq, Eq, Hash)]
83#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
84pub struct CreateSourceStatement {
85    pub temporary: bool,
86    pub if_not_exists: bool,
87    pub columns: Vec<ColumnDef>,
88    // The wildchar position in columns defined in sql. Only exist when using external schema.
89    pub wildcard_idx: Option<usize>,
90    pub constraints: Vec<TableConstraint>,
91    pub source_name: ObjectName,
92    pub with_properties: WithProperties,
93    pub format_encode: CompatibleFormatEncode,
94    pub source_watermarks: Vec<SourceWatermark>,
95    pub include_column_options: IncludeOption,
96}
97
98/// FORMAT means how to get the operation(Insert/Delete) from the input.
99///
100/// Check `CONNECTORS_COMPATIBLE_FORMATS` for what `FORMAT ... ENCODE ...` combinations are allowed.
101#[derive(Debug, Clone, PartialEq, Eq, Hash)]
102#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
103pub enum Format {
104    /// The format is the same with RisingWave's internal representation.
105    /// Used internally for schema change
106    Native,
107    /// for self-explanatory sources like iceberg, they have their own format, and should not be specified by user.
108    None,
109    // Keyword::DEBEZIUM
110    Debezium,
111    // Keyword::DEBEZIUM_MONGO
112    DebeziumMongo,
113    // Keyword::MAXWELL
114    Maxwell,
115    // Keyword::CANAL
116    Canal,
117    // Keyword::UPSERT
118    Upsert,
119    // Keyword::PLAIN
120    Plain,
121}
122
123// TODO: unify with `from_keyword`
124impl fmt::Display for Format {
125    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
126        write!(
127            f,
128            "{}",
129            match self {
130                Format::Native => "NATIVE",
131                Format::Debezium => "DEBEZIUM",
132                Format::DebeziumMongo => "DEBEZIUM_MONGO",
133                Format::Maxwell => "MAXWELL",
134                Format::Canal => "CANAL",
135                Format::Upsert => "UPSERT",
136                Format::Plain => "PLAIN",
137                Format::None => "NONE",
138            }
139        )
140    }
141}
142
143impl Format {
144    pub fn from_keyword(s: &str) -> ModalResult<Self> {
145        Ok(match s {
146            "DEBEZIUM" => Format::Debezium,
147            "DEBEZIUM_MONGO" => Format::DebeziumMongo,
148            "MAXWELL" => Format::Maxwell,
149            "CANAL" => Format::Canal,
150            "PLAIN" => Format::Plain,
151            "UPSERT" => Format::Upsert,
152            "NATIVE" => Format::Native,
153            "NONE" => Format::None,
154            _ => parser_err!(
155                "expected CANAL | PROTOBUF | DEBEZIUM | MAXWELL | PLAIN | NATIVE | NONE after FORMAT"
156            ),
157        })
158    }
159}
160
161/// Check `CONNECTORS_COMPATIBLE_FORMATS` for what `FORMAT ... ENCODE ...` combinations are allowed.
162#[derive(Debug, Clone, PartialEq, Eq, Hash)]
163#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
164pub enum Encode {
165    Avro,     // Keyword::Avro
166    Csv,      // Keyword::CSV
167    Protobuf, // Keyword::PROTOBUF
168    Json,     // Keyword::JSON
169    Bytes,    // Keyword::BYTES
170    /// for self-explanatory sources like iceberg, they have their own format, and should not be specified by user.
171    None,
172    Text, // Keyword::TEXT
173    /// The encode is the same with RisingWave's internal representation.
174    /// Used internally for schema change
175    Native,
176    Template,
177    Parquet,
178}
179
180// TODO: unify with `from_keyword`
181impl fmt::Display for Encode {
182    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
183        write!(
184            f,
185            "{}",
186            match self {
187                Encode::Avro => "AVRO",
188                Encode::Csv => "CSV",
189                Encode::Protobuf => "PROTOBUF",
190                Encode::Json => "JSON",
191                Encode::Bytes => "BYTES",
192                Encode::Native => "NATIVE",
193                Encode::Template => "TEMPLATE",
194                Encode::None => "NONE",
195                Encode::Parquet => "PARQUET",
196                Encode::Text => "TEXT",
197            }
198        )
199    }
200}
201
202impl Encode {
203    pub fn from_keyword(s: &str) -> ModalResult<Self> {
204        Ok(match s {
205            "AVRO" => Encode::Avro,
206            "TEXT" => Encode::Text,
207            "BYTES" => Encode::Bytes,
208            "CSV" => Encode::Csv,
209            "PROTOBUF" => Encode::Protobuf,
210            "JSON" => Encode::Json,
211            "TEMPLATE" => Encode::Template,
212            "PARQUET" => Encode::Parquet,
213            "NATIVE" => Encode::Native,
214            "NONE" => Encode::None,
215            _ => parser_err!(
216                "expected AVRO | BYTES | CSV | PROTOBUF | JSON | NATIVE | TEMPLATE | PARQUET | NONE after Encode"
217            ),
218        })
219    }
220}
221
222/// `FORMAT ... ENCODE ... [(a=b, ...)] [KEY ENCODE ...]`
223#[derive(Debug, Clone, PartialEq, Eq, Hash)]
224#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
225pub struct FormatEncodeOptions {
226    pub format: Format,
227    pub row_encode: Encode,
228    pub row_options: Vec<SqlOption>,
229
230    pub key_encode: Option<Encode>,
231}
232
233impl Parser<'_> {
234    /// Peek the next tokens to see if it is `FORMAT` or `ROW FORMAT` (for compatibility).
235    fn peek_format_encode_format(&mut self) -> bool {
236        (self.peek_nth_any_of_keywords(0, &[Keyword::ROW])
237            && self.peek_nth_any_of_keywords(1, &[Keyword::FORMAT])) // ROW FORMAT
238            || self.peek_nth_any_of_keywords(0, &[Keyword::FORMAT]) // FORMAT
239    }
240
241    /// Parse the source schema. The behavior depends on the `connector` type.
242    pub fn parse_format_encode_with_connector(
243        &mut self,
244        connector: &str,
245        cdc_source_job: bool,
246    ) -> ModalResult<CompatibleFormatEncode> {
247        // row format for cdc source must be debezium json
248        // row format for nexmark source must be native
249        // default row format for datagen source is native
250        // FIXME: parse input `connector` to enum type instead using string here
251        if connector.contains("-cdc") {
252            let expected = if cdc_source_job {
253                FormatEncodeOptions::plain_json()
254            } else if connector.contains("mongodb") {
255                FormatEncodeOptions::debezium_mongo_json()
256            } else {
257                FormatEncodeOptions::debezium_json()
258            };
259
260            if self.peek_format_encode_format() {
261                let schema = parse_format_encode(self)?.into_v2();
262                if schema != expected {
263                    parser_err!(
264                        "Row format for CDC connectors should be \
265                         either omitted or set to `{expected}`",
266                    );
267                }
268            }
269            Ok(expected.into())
270        } else if connector.contains("nexmark") {
271            let expected = FormatEncodeOptions::native();
272            if self.peek_format_encode_format() {
273                let schema = parse_format_encode(self)?.into_v2();
274                if schema != expected {
275                    parser_err!(
276                        "Row format for nexmark connectors should be \
277                         either omitted or set to `{expected}`",
278                    );
279                }
280            }
281            Ok(expected.into())
282        } else if connector.contains("datagen") {
283            Ok(if self.peek_format_encode_format() {
284                parse_format_encode(self)?
285            } else {
286                FormatEncodeOptions::native().into()
287            })
288        } else if connector.contains("iceberg") {
289            let expected = FormatEncodeOptions::none();
290            if self.peek_format_encode_format() {
291                let schema = parse_format_encode(self)?.into_v2();
292                if schema != expected {
293                    parser_err!(
294                        "Row format for iceberg connectors should be \
295                         either omitted or set to `{expected}`",
296                    );
297                }
298            }
299            Ok(expected.into())
300        } else if connector.contains("webhook") {
301            parser_err!(
302                "Source with webhook connector is not supported. \
303                 Please use the `CREATE TABLE ... WITH ...` statement instead.",
304            );
305        } else {
306            Ok(parse_format_encode(self)?)
307        }
308    }
309
310    /// Parse `FORMAT ... ENCODE ... (...)`.
311    pub fn parse_schema(&mut self) -> ModalResult<Option<FormatEncodeOptions>> {
312        if !self.parse_keyword(Keyword::FORMAT) {
313            return Ok(None);
314        }
315
316        let id = self.parse_identifier()?;
317        let s = id.value.to_ascii_uppercase();
318        let format = Format::from_keyword(&s)?;
319        self.expect_keyword(Keyword::ENCODE)?;
320        let id = self.parse_identifier()?;
321        let s = id.value.to_ascii_uppercase();
322        let row_encode = Encode::from_keyword(&s)?;
323        let row_options = self.parse_options()?;
324
325        let key_encode = if self.parse_keywords(&[Keyword::KEY, Keyword::ENCODE]) {
326            Some(Encode::from_keyword(
327                self.parse_identifier()?.value.to_ascii_uppercase().as_str(),
328            )?)
329        } else {
330            None
331        };
332
333        Ok(Some(FormatEncodeOptions {
334            format,
335            row_encode,
336            row_options,
337            key_encode,
338        }))
339    }
340}
341
342impl FormatEncodeOptions {
343    pub const fn plain_json() -> Self {
344        FormatEncodeOptions {
345            format: Format::Plain,
346            row_encode: Encode::Json,
347            row_options: Vec::new(),
348            key_encode: None,
349        }
350    }
351
352    /// Create a new source schema with `Debezium` format and `Json` encoding.
353    pub const fn debezium_json() -> Self {
354        FormatEncodeOptions {
355            format: Format::Debezium,
356            row_encode: Encode::Json,
357            row_options: Vec::new(),
358            key_encode: None,
359        }
360    }
361
362    pub const fn debezium_mongo_json() -> Self {
363        FormatEncodeOptions {
364            format: Format::DebeziumMongo,
365            row_encode: Encode::Json,
366            row_options: Vec::new(),
367            key_encode: None,
368        }
369    }
370
371    /// Create a new source schema with `Native` format and encoding.
372    pub const fn native() -> Self {
373        FormatEncodeOptions {
374            format: Format::Native,
375            row_encode: Encode::Native,
376            row_options: Vec::new(),
377            key_encode: None,
378        }
379    }
380
381    /// Create a new source schema with `None` format and encoding.
382    /// Used for self-explanatory source like iceberg.
383    pub const fn none() -> Self {
384        FormatEncodeOptions {
385            format: Format::None,
386            row_encode: Encode::None,
387            row_options: Vec::new(),
388            key_encode: None,
389        }
390    }
391
392    pub fn row_options(&self) -> &[SqlOption] {
393        self.row_options.as_ref()
394    }
395}
396
397impl fmt::Display for FormatEncodeOptions {
398    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
399        write!(f, "FORMAT {} ENCODE {}", self.format, self.row_encode)?;
400
401        if !self.row_options().is_empty() {
402            write!(f, " ({})", display_comma_separated(self.row_options()))
403        } else {
404            Ok(())
405        }
406    }
407}
408
409pub(super) fn fmt_create_items(
410    columns: &[ColumnDef],
411    constraints: &[TableConstraint],
412    watermarks: &[SourceWatermark],
413    wildcard_idx: Option<usize>,
414) -> std::result::Result<String, fmt::Error> {
415    let mut items = String::new();
416    let has_items = !columns.is_empty()
417        || !constraints.is_empty()
418        || !watermarks.is_empty()
419        || wildcard_idx.is_some();
420    has_items.then(|| write!(&mut items, "("));
421
422    if let Some(wildcard_idx) = wildcard_idx {
423        let (columns_l, columns_r) = columns.split_at(wildcard_idx);
424        write!(&mut items, "{}", display_comma_separated(columns_l))?;
425        if !columns_l.is_empty() {
426            write!(&mut items, ", ")?;
427        }
428        write!(&mut items, "{}", Token::Mul)?;
429        if !columns_r.is_empty() {
430            write!(&mut items, ", ")?;
431        }
432        write!(&mut items, "{}", display_comma_separated(columns_r))?;
433    } else {
434        write!(&mut items, "{}", display_comma_separated(columns))?;
435    }
436    let mut leading_items = !columns.is_empty() || wildcard_idx.is_some();
437
438    if leading_items && !constraints.is_empty() {
439        write!(&mut items, ", ")?;
440    }
441    write!(&mut items, "{}", display_comma_separated(constraints))?;
442    leading_items |= !constraints.is_empty();
443
444    if leading_items && !watermarks.is_empty() {
445        write!(&mut items, ", ")?;
446    }
447    write!(&mut items, "{}", display_comma_separated(watermarks))?;
448    // uncomment this when adding more sections below
449    // leading_items |= !watermarks.is_empty();
450
451    has_items.then(|| write!(&mut items, ")"));
452    Ok(items)
453}
454
455impl fmt::Display for CreateSourceStatement {
456    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
457        let mut v: Vec<String> = vec![];
458        impl_fmt_display!(if_not_exists => [Keyword::IF, Keyword::NOT, Keyword::EXISTS], v, self);
459        impl_fmt_display!(source_name, v, self);
460
461        let items = fmt_create_items(
462            &self.columns,
463            &self.constraints,
464            &self.source_watermarks,
465            self.wildcard_idx,
466        )?;
467        if !items.is_empty() {
468            v.push(items);
469        }
470
471        for item in &self.include_column_options {
472            v.push(format!("{}", item));
473        }
474        impl_fmt_display!(with_properties, v, self);
475        impl_fmt_display!(format_encode, v, self);
476        v.iter().join(" ").fmt(f)
477    }
478}
479
480#[derive(Debug, Clone, PartialEq, Eq, Hash)]
481#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
482pub enum CreateSink {
483    From(ObjectName),
484    AsQuery(Box<Query>),
485}
486
487impl fmt::Display for CreateSink {
488    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
489        match self {
490            Self::From(mv) => write!(f, "FROM {}", mv),
491            Self::AsQuery(query) => write!(f, "AS {}", query),
492        }
493    }
494}
495// sql_grammar!(CreateSinkStatement {
496//     if_not_exists => [Keyword::IF, Keyword::NOT, Keyword::EXISTS],
497//     sink_name: Ident,
498//     [Keyword::FROM],
499//     materialized_view: Ident,
500//     with_properties: AstOption<WithProperties>,
501// });
502#[derive(Debug, Clone, PartialEq, Eq, Hash)]
503#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
504pub struct CreateSinkStatement {
505    pub if_not_exists: bool,
506    pub sink_name: ObjectName,
507    pub with_properties: WithProperties,
508    pub sink_from: CreateSink,
509    pub columns: Vec<Ident>,
510    pub emit_mode: Option<EmitMode>,
511    pub sink_schema: Option<FormatEncodeOptions>,
512    pub into_table_name: Option<ObjectName>,
513}
514
515impl ParseTo for CreateSinkStatement {
516    fn parse_to(p: &mut Parser<'_>) -> ModalResult<Self> {
517        impl_parse_to!(if_not_exists => [Keyword::IF, Keyword::NOT, Keyword::EXISTS], p);
518        impl_parse_to!(sink_name: ObjectName, p);
519
520        let into_table_name = if p.parse_keyword(Keyword::INTO) {
521            impl_parse_to!(into_table_name: ObjectName, p);
522            Some(into_table_name)
523        } else {
524            None
525        };
526
527        let columns = p.parse_parenthesized_column_list(IsOptional::Optional)?;
528
529        let sink_from = if p.parse_keyword(Keyword::FROM) {
530            impl_parse_to!(from_name: ObjectName, p);
531            CreateSink::From(from_name)
532        } else if p.parse_keyword(Keyword::AS) {
533            let query = Box::new(p.parse_query()?);
534            CreateSink::AsQuery(query)
535        } else {
536            p.expected("FROM or AS after CREATE SINK sink_name")?
537        };
538
539        let emit_mode: Option<EmitMode> = p.parse_emit_mode()?;
540
541        // This check cannot be put into the `WithProperties::parse_to`, since other
542        // statements may not need the with properties.
543        if !p.peek_nth_any_of_keywords(0, &[Keyword::WITH]) && into_table_name.is_none() {
544            p.expected("WITH")?
545        }
546        impl_parse_to!(with_properties: WithProperties, p);
547
548        if with_properties.0.is_empty() && into_table_name.is_none() {
549            parser_err!("sink properties not provided");
550        }
551
552        let sink_schema = p.parse_schema()?;
553
554        Ok(Self {
555            if_not_exists,
556            sink_name,
557            with_properties,
558            sink_from,
559            columns,
560            emit_mode,
561            sink_schema,
562            into_table_name,
563        })
564    }
565}
566
567impl fmt::Display for CreateSinkStatement {
568    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
569        let mut v: Vec<String> = vec![];
570        impl_fmt_display!(if_not_exists => [Keyword::IF, Keyword::NOT, Keyword::EXISTS], v, self);
571        impl_fmt_display!(sink_name, v, self);
572        if let Some(into_table) = &self.into_table_name {
573            impl_fmt_display!([Keyword::INTO], v);
574            impl_fmt_display!([into_table], v);
575        }
576        impl_fmt_display!(sink_from, v, self);
577        if let Some(ref emit_mode) = self.emit_mode {
578            v.push(format!("EMIT {}", emit_mode));
579        }
580        impl_fmt_display!(with_properties, v, self);
581        if let Some(schema) = &self.sink_schema {
582            v.push(format!("{}", schema));
583        }
584        v.iter().join(" ").fmt(f)
585    }
586}
587
588// sql_grammar!(CreateSubscriptionStatement {
589//     if_not_exists => [Keyword::IF, Keyword::NOT, Keyword::EXISTS],
590//     subscription_name: Ident,
591//     [Keyword::FROM],
592//     materialized_view: Ident,
593//     with_properties: AstOption<WithProperties>,
594// });
595#[derive(Debug, Clone, PartialEq, Eq, Hash)]
596#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
597pub struct CreateSubscriptionStatement {
598    pub if_not_exists: bool,
599    pub subscription_name: ObjectName,
600    pub with_properties: WithProperties,
601    pub subscription_from: ObjectName,
602    // pub emit_mode: Option<EmitMode>,
603}
604
605impl ParseTo for CreateSubscriptionStatement {
606    fn parse_to(p: &mut Parser<'_>) -> ModalResult<Self> {
607        impl_parse_to!(if_not_exists => [Keyword::IF, Keyword::NOT, Keyword::EXISTS], p);
608        impl_parse_to!(subscription_name: ObjectName, p);
609
610        let subscription_from = if p.parse_keyword(Keyword::FROM) {
611            impl_parse_to!(from_name: ObjectName, p);
612            from_name
613        } else {
614            p.expected("FROM after CREATE SUBSCRIPTION subscription_name")?
615        };
616
617        // let emit_mode = p.parse_emit_mode()?;
618
619        // This check cannot be put into the `WithProperties::parse_to`, since other
620        // statements may not need the with properties.
621        if !p.peek_nth_any_of_keywords(0, &[Keyword::WITH]) {
622            p.expected("WITH")?
623        }
624        impl_parse_to!(with_properties: WithProperties, p);
625
626        if with_properties.0.is_empty() {
627            parser_err!("subscription properties not provided");
628        }
629
630        Ok(Self {
631            if_not_exists,
632            subscription_name,
633            with_properties,
634            subscription_from,
635        })
636    }
637}
638
639impl fmt::Display for CreateSubscriptionStatement {
640    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
641        let mut v: Vec<String> = vec![];
642        impl_fmt_display!(if_not_exists => [Keyword::IF, Keyword::NOT, Keyword::EXISTS], v, self);
643        impl_fmt_display!(subscription_name, v, self);
644        v.push(format!("FROM {}", self.subscription_from));
645        impl_fmt_display!(with_properties, v, self);
646        v.iter().join(" ").fmt(f)
647    }
648}
649
650#[derive(Debug, Clone, PartialEq, Eq, Hash)]
651#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
652pub enum DeclareCursor {
653    Query(Box<Query>),
654    Subscription(ObjectName, Since),
655}
656
657impl fmt::Display for DeclareCursor {
658    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
659        let mut v: Vec<String> = vec![];
660        match self {
661            DeclareCursor::Query(query) => v.push(format!("{}", query.as_ref())),
662            DeclareCursor::Subscription(name, since) => {
663                v.push(format!("{}", name));
664                v.push(format!("{:?}", since));
665            }
666        }
667        v.iter().join(" ").fmt(f)
668    }
669}
670
671// sql_grammar!(DeclareCursorStatement {
672//     cursor_name: Ident,
673//     [Keyword::SUBSCRIPTION]
674//     [Keyword::CURSOR],
675//     [Keyword::FOR],
676//     subscription: Ident or query: Query,
677//     [Keyword::SINCE],
678//     rw_timestamp: Ident,
679// });
680#[derive(Debug, Clone, PartialEq, Eq, Hash)]
681#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
682pub struct DeclareCursorStatement {
683    pub cursor_name: Ident,
684    pub declare_cursor: DeclareCursor,
685}
686
687impl ParseTo for DeclareCursorStatement {
688    fn parse_to(p: &mut Parser<'_>) -> ModalResult<Self> {
689        let cursor_name = p.parse_identifier_non_reserved()?;
690
691        let declare_cursor = if !p.parse_keyword(Keyword::SUBSCRIPTION) {
692            p.expect_keyword(Keyword::CURSOR)?;
693            p.expect_keyword(Keyword::FOR)?;
694            DeclareCursor::Query(Box::new(p.parse_query()?))
695        } else {
696            p.expect_keyword(Keyword::CURSOR)?;
697            p.expect_keyword(Keyword::FOR)?;
698            let cursor_for_name = p.parse_object_name()?;
699            let rw_timestamp = p.parse_since()?;
700            DeclareCursor::Subscription(cursor_for_name, rw_timestamp)
701        };
702
703        Ok(Self {
704            cursor_name,
705            declare_cursor,
706        })
707    }
708}
709
710impl fmt::Display for DeclareCursorStatement {
711    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
712        let mut v: Vec<String> = vec![];
713        impl_fmt_display!(cursor_name, v, self);
714        match &self.declare_cursor {
715            DeclareCursor::Query(_) => {
716                v.push("CURSOR FOR ".to_owned());
717            }
718            DeclareCursor::Subscription { .. } => {
719                v.push("SUBSCRIPTION CURSOR FOR ".to_owned());
720            }
721        }
722        impl_fmt_display!(declare_cursor, v, self);
723        v.iter().join(" ").fmt(f)
724    }
725}
726
727// sql_grammar!(FetchCursorStatement {
728//     cursor_name: Ident,
729// });
730#[derive(Debug, Clone, PartialEq, Eq, Hash)]
731#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
732pub struct FetchCursorStatement {
733    pub cursor_name: Ident,
734    pub count: u32,
735    pub with_properties: WithProperties,
736}
737
738impl ParseTo for FetchCursorStatement {
739    fn parse_to(p: &mut Parser<'_>) -> ModalResult<Self> {
740        let count = if p.parse_keyword(Keyword::NEXT) {
741            1
742        } else {
743            literal_u32(p)?
744        };
745        p.expect_keyword(Keyword::FROM)?;
746        let cursor_name = p.parse_identifier_non_reserved()?;
747        impl_parse_to!(with_properties: WithProperties, p);
748
749        Ok(Self {
750            cursor_name,
751            count,
752            with_properties,
753        })
754    }
755}
756
757impl fmt::Display for FetchCursorStatement {
758    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
759        let mut v: Vec<String> = vec![];
760        if self.count == 1 {
761            v.push("NEXT ".to_owned());
762        } else {
763            impl_fmt_display!(count, v, self);
764        }
765        v.push("FROM ".to_owned());
766        impl_fmt_display!(cursor_name, v, self);
767        v.iter().join(" ").fmt(f)
768    }
769}
770
771// sql_grammar!(CloseCursorStatement {
772//     cursor_name: Ident,
773// });
774#[derive(Debug, Clone, PartialEq, Eq, Hash)]
775#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
776pub struct CloseCursorStatement {
777    pub cursor_name: Option<Ident>,
778}
779
780impl ParseTo for CloseCursorStatement {
781    fn parse_to(p: &mut Parser<'_>) -> ModalResult<Self> {
782        let cursor_name = if p.parse_keyword(Keyword::ALL) {
783            None
784        } else {
785            Some(p.parse_identifier_non_reserved()?)
786        };
787
788        Ok(Self { cursor_name })
789    }
790}
791
792impl fmt::Display for CloseCursorStatement {
793    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
794        let mut v: Vec<String> = vec![];
795        if let Some(cursor_name) = &self.cursor_name {
796            v.push(format!("{}", cursor_name));
797        } else {
798            v.push("ALL".to_owned());
799        }
800        v.iter().join(" ").fmt(f)
801    }
802}
803
804// sql_grammar!(CreateConnectionStatement {
805//     if_not_exists => [Keyword::IF, Keyword::NOT, Keyword::EXISTS],
806//     connection_name: Ident,
807//     with_properties: AstOption<WithProperties>,
808// });
809#[derive(Debug, Clone, PartialEq, Eq, Hash)]
810#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
811pub struct CreateConnectionStatement {
812    pub if_not_exists: bool,
813    pub connection_name: ObjectName,
814    pub with_properties: WithProperties,
815}
816
817impl ParseTo for CreateConnectionStatement {
818    fn parse_to(p: &mut Parser<'_>) -> ModalResult<Self> {
819        impl_parse_to!(if_not_exists => [Keyword::IF, Keyword::NOT, Keyword::EXISTS], p);
820        impl_parse_to!(connection_name: ObjectName, p);
821        impl_parse_to!(with_properties: WithProperties, p);
822        if with_properties.0.is_empty() {
823            parser_err!("connection properties not provided");
824        }
825
826        Ok(Self {
827            if_not_exists,
828            connection_name,
829            with_properties,
830        })
831    }
832}
833
834impl fmt::Display for CreateConnectionStatement {
835    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
836        let mut v: Vec<String> = vec![];
837        impl_fmt_display!(if_not_exists => [Keyword::IF, Keyword::NOT, Keyword::EXISTS], v, self);
838        impl_fmt_display!(connection_name, v, self);
839        impl_fmt_display!(with_properties, v, self);
840        v.iter().join(" ").fmt(f)
841    }
842}
843
844#[derive(Debug, Clone, PartialEq, Eq, Hash)]
845#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
846pub struct CreateSecretStatement {
847    pub if_not_exists: bool,
848    pub secret_name: ObjectName,
849    pub credential: Value,
850    pub with_properties: WithProperties,
851}
852
853impl ParseTo for CreateSecretStatement {
854    fn parse_to(parser: &mut Parser<'_>) -> ModalResult<Self> {
855        impl_parse_to!(if_not_exists => [Keyword::IF, Keyword::NOT, Keyword::EXISTS], parser);
856        impl_parse_to!(secret_name: ObjectName, parser);
857        impl_parse_to!(with_properties: WithProperties, parser);
858        let mut credential = Value::Null;
859        if parser.parse_keyword(Keyword::AS) {
860            credential = parser.ensure_parse_value()?;
861        }
862        Ok(Self {
863            if_not_exists,
864            secret_name,
865            credential,
866            with_properties,
867        })
868    }
869}
870
871impl fmt::Display for CreateSecretStatement {
872    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
873        let mut v: Vec<String> = vec![];
874        impl_fmt_display!(if_not_exists => [Keyword::IF, Keyword::NOT, Keyword::EXISTS], v, self);
875        impl_fmt_display!(secret_name, v, self);
876        impl_fmt_display!(with_properties, v, self);
877        if self.credential != Value::Null {
878            v.push("AS".to_owned());
879            impl_fmt_display!(credential, v, self);
880        }
881        v.iter().join(" ").fmt(f)
882    }
883}
884
885#[derive(Debug, Clone, PartialEq, Eq, Hash)]
886#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
887pub struct WithProperties(pub Vec<SqlOption>);
888
889impl ParseTo for WithProperties {
890    fn parse_to(parser: &mut Parser<'_>) -> ModalResult<Self> {
891        Ok(Self(
892            parser.parse_options_with_preceding_keyword(Keyword::WITH)?,
893        ))
894    }
895}
896
897impl fmt::Display for WithProperties {
898    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
899        if !self.0.is_empty() {
900            write!(f, "WITH ({})", display_comma_separated(self.0.as_slice()))
901        } else {
902            Ok(())
903        }
904    }
905}
906
907#[derive(Debug, Clone, PartialEq, Eq, Hash)]
908#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
909pub enum Since {
910    TimestampMsNum(u64),
911    ProcessTime,
912    Begin,
913    Full,
914}
915
916impl fmt::Display for Since {
917    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
918        use Since::*;
919        match self {
920            TimestampMsNum(ts) => write!(f, " SINCE {}", ts),
921            ProcessTime => write!(f, " SINCE PROCTIME()"),
922            Begin => write!(f, " SINCE BEGIN()"),
923            Full => write!(f, " FULL"),
924        }
925    }
926}
927
928#[derive(Debug, Clone, PartialEq, Eq, Hash)]
929#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
930pub struct RowSchemaLocation {
931    pub value: AstString,
932}
933
934impl ParseTo for RowSchemaLocation {
935    fn parse_to(p: &mut Parser<'_>) -> ModalResult<Self> {
936        impl_parse_to!([Keyword::ROW, Keyword::SCHEMA, Keyword::LOCATION], p);
937        impl_parse_to!(value: AstString, p);
938        Ok(Self { value })
939    }
940}
941
942impl fmt::Display for RowSchemaLocation {
943    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
944        let mut v = vec![];
945        impl_fmt_display!([Keyword::ROW, Keyword::SCHEMA, Keyword::LOCATION], v);
946        impl_fmt_display!(value, v, self);
947        v.iter().join(" ").fmt(f)
948    }
949}
950
951/// String literal. The difference with String is that it is displayed with
952/// single-quotes.
953#[derive(Debug, Clone, PartialEq, Eq, Hash)]
954#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
955pub struct AstString(pub String);
956
957impl ParseTo for AstString {
958    fn parse_to(parser: &mut Parser<'_>) -> ModalResult<Self> {
959        Ok(Self(parser.parse_literal_string()?))
960    }
961}
962
963impl fmt::Display for AstString {
964    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
965        write!(f, "'{}'", self.0)
966    }
967}
968
969/// This trait is used to replace `Option` because `fmt::Display` can not be implemented for
970/// `Option<T>`.
971#[derive(Debug, Clone, PartialEq, Eq, Hash)]
972#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
973pub enum AstOption<T> {
974    /// No value
975    None,
976    /// Some value `T`
977    Some(T),
978}
979
980impl<T: ParseTo> ParseTo for AstOption<T> {
981    fn parse_to(parser: &mut Parser<'_>) -> ModalResult<Self> {
982        match T::parse_to(parser) {
983            Ok(t) => Ok(AstOption::Some(t)),
984            Err(_) => Ok(AstOption::None),
985        }
986    }
987}
988
989impl<T: fmt::Display> fmt::Display for AstOption<T> {
990    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
991        match &self {
992            AstOption::Some(t) => t.fmt(f),
993            AstOption::None => Ok(()),
994        }
995    }
996}
997
998impl<T> From<AstOption<T>> for Option<T> {
999    fn from(val: AstOption<T>) -> Self {
1000        match val {
1001            AstOption::Some(t) => Some(t),
1002            AstOption::None => None,
1003        }
1004    }
1005}
1006
1007#[derive(Debug, Clone, PartialEq, Eq, Hash)]
1008#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
1009pub struct CreateUserStatement {
1010    pub user_name: ObjectName,
1011    pub with_options: UserOptions,
1012}
1013
1014#[derive(Debug, Clone, PartialEq, Eq, Hash)]
1015#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
1016pub struct AlterUserStatement {
1017    pub user_name: ObjectName,
1018    pub mode: AlterUserMode,
1019}
1020
1021#[derive(Debug, Clone, PartialEq, Eq, Hash)]
1022#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
1023pub enum AlterUserMode {
1024    Options(UserOptions),
1025    Rename(ObjectName),
1026}
1027
1028#[derive(Debug, Clone, PartialEq, Eq, Hash)]
1029#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
1030pub enum UserOption {
1031    SuperUser,
1032    NoSuperUser,
1033    CreateDB,
1034    NoCreateDB,
1035    CreateUser,
1036    NoCreateUser,
1037    Login,
1038    NoLogin,
1039    EncryptedPassword(AstString),
1040    Password(Option<AstString>),
1041    OAuth(Vec<SqlOption>),
1042}
1043
1044impl fmt::Display for UserOption {
1045    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
1046        match self {
1047            UserOption::SuperUser => write!(f, "SUPERUSER"),
1048            UserOption::NoSuperUser => write!(f, "NOSUPERUSER"),
1049            UserOption::CreateDB => write!(f, "CREATEDB"),
1050            UserOption::NoCreateDB => write!(f, "NOCREATEDB"),
1051            UserOption::CreateUser => write!(f, "CREATEUSER"),
1052            UserOption::NoCreateUser => write!(f, "NOCREATEUSER"),
1053            UserOption::Login => write!(f, "LOGIN"),
1054            UserOption::NoLogin => write!(f, "NOLOGIN"),
1055            UserOption::EncryptedPassword(p) => write!(f, "ENCRYPTED PASSWORD {}", p),
1056            UserOption::Password(None) => write!(f, "PASSWORD NULL"),
1057            UserOption::Password(Some(p)) => write!(f, "PASSWORD {}", p),
1058            UserOption::OAuth(options) => {
1059                write!(f, "({})", display_comma_separated(options.as_slice()))
1060            }
1061        }
1062    }
1063}
1064
1065#[derive(Debug, Clone, PartialEq, Eq, Hash)]
1066#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
1067pub struct UserOptions(pub Vec<UserOption>);
1068
1069#[derive(Default)]
1070struct UserOptionsBuilder {
1071    super_user: Option<UserOption>,
1072    create_db: Option<UserOption>,
1073    create_user: Option<UserOption>,
1074    login: Option<UserOption>,
1075    password: Option<UserOption>,
1076}
1077
1078impl UserOptionsBuilder {
1079    fn build(self) -> UserOptions {
1080        let mut options = vec![];
1081        if let Some(option) = self.super_user {
1082            options.push(option);
1083        }
1084        if let Some(option) = self.create_db {
1085            options.push(option);
1086        }
1087        if let Some(option) = self.create_user {
1088            options.push(option);
1089        }
1090        if let Some(option) = self.login {
1091            options.push(option);
1092        }
1093        if let Some(option) = self.password {
1094            options.push(option);
1095        }
1096        UserOptions(options)
1097    }
1098}
1099
1100impl ParseTo for UserOptions {
1101    fn parse_to(parser: &mut Parser<'_>) -> ModalResult<Self> {
1102        let mut builder = UserOptionsBuilder::default();
1103        let add_option = |item: &mut Option<UserOption>, user_option| {
1104            let old_value = item.replace(user_option);
1105            if old_value.is_some() {
1106                parser_err!("conflicting or redundant options");
1107            }
1108            Ok(())
1109        };
1110        let _ = parser.parse_keyword(Keyword::WITH);
1111        loop {
1112            let token = parser.peek_token();
1113            if token == Token::EOF || token == Token::SemiColon {
1114                break;
1115            }
1116
1117            if let Token::Word(ref w) = token.token {
1118                let checkpoint = *parser;
1119                parser.next_token();
1120                let (item_mut_ref, user_option) = match w.keyword {
1121                    Keyword::SUPERUSER => (&mut builder.super_user, UserOption::SuperUser),
1122                    Keyword::NOSUPERUSER => (&mut builder.super_user, UserOption::NoSuperUser),
1123                    Keyword::CREATEDB => (&mut builder.create_db, UserOption::CreateDB),
1124                    Keyword::NOCREATEDB => (&mut builder.create_db, UserOption::NoCreateDB),
1125                    Keyword::CREATEUSER => (&mut builder.create_user, UserOption::CreateUser),
1126                    Keyword::NOCREATEUSER => (&mut builder.create_user, UserOption::NoCreateUser),
1127                    Keyword::LOGIN => (&mut builder.login, UserOption::Login),
1128                    Keyword::NOLOGIN => (&mut builder.login, UserOption::NoLogin),
1129                    Keyword::PASSWORD => {
1130                        if parser.parse_keyword(Keyword::NULL) {
1131                            (&mut builder.password, UserOption::Password(None))
1132                        } else {
1133                            (
1134                                &mut builder.password,
1135                                UserOption::Password(Some(AstString::parse_to(parser)?)),
1136                            )
1137                        }
1138                    }
1139                    Keyword::ENCRYPTED => {
1140                        parser.expect_keyword(Keyword::PASSWORD)?;
1141                        (
1142                            &mut builder.password,
1143                            UserOption::EncryptedPassword(AstString::parse_to(parser)?),
1144                        )
1145                    }
1146                    Keyword::OAUTH => {
1147                        let options = parser.parse_options()?;
1148                        (&mut builder.password, UserOption::OAuth(options))
1149                    }
1150                    _ => {
1151                        parser.expected_at(
1152                            checkpoint,
1153                            "SUPERUSER | NOSUPERUSER | CREATEDB | NOCREATEDB | LOGIN \
1154                            | NOLOGIN | CREATEUSER | NOCREATEUSER | [ENCRYPTED] PASSWORD | NULL | OAUTH",
1155                        )?;
1156                        unreachable!()
1157                    }
1158                };
1159                add_option(item_mut_ref, user_option)?;
1160            } else {
1161                parser.expected(
1162                    "SUPERUSER | NOSUPERUSER | CREATEDB | NOCREATEDB | LOGIN | NOLOGIN \
1163                        | CREATEUSER | NOCREATEUSER | [ENCRYPTED] PASSWORD | NULL | OAUTH",
1164                )?
1165            }
1166        }
1167        Ok(builder.build())
1168    }
1169}
1170
1171impl fmt::Display for UserOptions {
1172    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
1173        if !self.0.is_empty() {
1174            write!(f, "WITH {}", display_separated(self.0.as_slice(), " "))
1175        } else {
1176            Ok(())
1177        }
1178    }
1179}
1180
1181impl ParseTo for CreateUserStatement {
1182    fn parse_to(p: &mut Parser<'_>) -> ModalResult<Self> {
1183        impl_parse_to!(user_name: ObjectName, p);
1184        impl_parse_to!(with_options: UserOptions, p);
1185
1186        Ok(CreateUserStatement {
1187            user_name,
1188            with_options,
1189        })
1190    }
1191}
1192
1193impl fmt::Display for CreateUserStatement {
1194    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
1195        let mut v: Vec<String> = vec![];
1196        impl_fmt_display!(user_name, v, self);
1197        impl_fmt_display!(with_options, v, self);
1198        v.iter().join(" ").fmt(f)
1199    }
1200}
1201
1202impl fmt::Display for AlterUserMode {
1203    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
1204        match self {
1205            AlterUserMode::Options(options) => {
1206                write!(f, "{}", options)
1207            }
1208            AlterUserMode::Rename(new_name) => {
1209                write!(f, "RENAME TO {}", new_name)
1210            }
1211        }
1212    }
1213}
1214
1215impl fmt::Display for AlterUserStatement {
1216    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
1217        let mut v: Vec<String> = vec![];
1218        impl_fmt_display!(user_name, v, self);
1219        impl_fmt_display!(mode, v, self);
1220        v.iter().join(" ").fmt(f)
1221    }
1222}
1223
1224impl ParseTo for AlterUserStatement {
1225    fn parse_to(p: &mut Parser<'_>) -> ModalResult<Self> {
1226        impl_parse_to!(user_name: ObjectName, p);
1227        impl_parse_to!(mode: AlterUserMode, p);
1228
1229        Ok(AlterUserStatement { user_name, mode })
1230    }
1231}
1232
1233impl ParseTo for AlterUserMode {
1234    fn parse_to(p: &mut Parser<'_>) -> ModalResult<Self> {
1235        if p.parse_keyword(Keyword::RENAME) {
1236            p.expect_keyword(Keyword::TO)?;
1237            impl_parse_to!(new_name: ObjectName, p);
1238            Ok(AlterUserMode::Rename(new_name))
1239        } else {
1240            impl_parse_to!(with_options: UserOptions, p);
1241            Ok(AlterUserMode::Options(with_options))
1242        }
1243    }
1244}
1245
1246#[derive(Debug, Clone, PartialEq, Eq, Hash)]
1247#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
1248pub struct DropStatement {
1249    /// The type of the object to drop: TABLE, VIEW, etc.
1250    pub object_type: ObjectType,
1251    /// An optional `IF EXISTS` clause. (Non-standard.)
1252    pub if_exists: bool,
1253    /// Object to drop.
1254    pub object_name: ObjectName,
1255    /// Whether `CASCADE` was specified. This will be `false` when
1256    /// `RESTRICT` or no drop behavior at all was specified.
1257    pub drop_mode: AstOption<DropMode>,
1258}
1259
1260// sql_grammar!(DropStatement {
1261//     object_type: ObjectType,
1262//     if_exists => [Keyword::IF, Keyword::EXISTS],
1263//     name: ObjectName,
1264//     drop_mode: AstOption<DropMode>,
1265// });
1266impl ParseTo for DropStatement {
1267    fn parse_to(p: &mut Parser<'_>) -> ModalResult<Self> {
1268        impl_parse_to!(object_type: ObjectType, p);
1269        impl_parse_to!(if_exists => [Keyword::IF, Keyword::EXISTS], p);
1270        let object_name = p.parse_object_name()?;
1271        impl_parse_to!(drop_mode: AstOption<DropMode>, p);
1272        Ok(Self {
1273            object_type,
1274            if_exists,
1275            object_name,
1276            drop_mode,
1277        })
1278    }
1279}
1280
1281impl fmt::Display for DropStatement {
1282    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
1283        let mut v: Vec<String> = vec![];
1284        impl_fmt_display!(object_type, v, self);
1285        impl_fmt_display!(if_exists => [Keyword::IF, Keyword::EXISTS], v, self);
1286        impl_fmt_display!(object_name, v, self);
1287        impl_fmt_display!(drop_mode, v, self);
1288        v.iter().join(" ").fmt(f)
1289    }
1290}
1291
1292#[derive(Debug, Clone, PartialEq, Eq, Hash)]
1293#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
1294pub enum DropMode {
1295    Cascade,
1296    Restrict,
1297}
1298
1299impl ParseTo for DropMode {
1300    fn parse_to(parser: &mut Parser<'_>) -> ModalResult<Self> {
1301        let drop_mode = if parser.parse_keyword(Keyword::CASCADE) {
1302            DropMode::Cascade
1303        } else if parser.parse_keyword(Keyword::RESTRICT) {
1304            DropMode::Restrict
1305        } else {
1306            return parser.expected("CASCADE | RESTRICT");
1307        };
1308        Ok(drop_mode)
1309    }
1310}
1311
1312impl fmt::Display for DropMode {
1313    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
1314        f.write_str(match self {
1315            DropMode::Cascade => "CASCADE",
1316            DropMode::Restrict => "RESTRICT",
1317        })
1318    }
1319}
risingwave_sqlparser/ast/statement.rs

risingwave_sqlparser/ast/
statement.rs
