1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//! SQL Abstract Syntax Tree (AST) types
mod data_type;
mod ddl;
mod operator;
mod query;
mod value;
use std::fmt;
pub use self::data_type::DataType;
pub use self::ddl::{
AlterTableOperation, ColumnDef, ColumnOption, ColumnOptionDef, TableConstraint,
};
pub use self::operator::{BinaryOperator, UnaryOperator};
pub use self::query::{
Cte, Fetch, Join, JoinConstraint, JoinOperator, OrderByExpr, Query, Select, SelectItem,
SetExpr, SetOperator, TableAlias, TableFactor, TableWithJoins, Values,
};
pub use self::value::{DateTimeField, Value};
struct DisplaySeparated<'a, T>
where
T: fmt::Display,
{
slice: &'a [T],
sep: &'static str,
}
impl<'a, T> fmt::Display for DisplaySeparated<'a, T>
where
T: fmt::Display,
{
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let mut delim = "";
for t in self.slice {
write!(f, "{}", delim)?;
delim = self.sep;
write!(f, "{}", t)?;
}
Ok(())
}
}
fn display_separated<'a, T>(slice: &'a [T], sep: &'static str) -> DisplaySeparated<'a, T>
where
T: fmt::Display,
{
DisplaySeparated { slice, sep }
}
fn display_comma_separated<T>(slice: &[T]) -> DisplaySeparated<'_, T>
where
T: fmt::Display,
{
DisplaySeparated { slice, sep: ", " }
}
/// An identifier, decomposed into its value or character data and the quote style.
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct Ident {
/// The value of the identifier without quotes.
pub value: String,
/// The starting quote if any. Valid quote characters are the single quote,
/// double quote, backtick, and opening square bracket.
pub quote_style: Option<char>,
}
impl Ident {
/// Create a new identifier with the given value and no quotes.
pub fn new<S>(value: S) -> Self
where
S: Into<String>,
{
Ident {
value: value.into(),
quote_style: None,
}
}
/// Create a new quoted identifier with the given quote and value. This function
/// panics if the given quote is not a valid quote character.
pub fn with_quote<S>(quote: char, value: S) -> Self
where
S: Into<String>,
{
assert!(quote == '\'' || quote == '"' || quote == '`' || quote == '[');
Ident {
value: value.into(),
quote_style: Some(quote),
}
}
}
impl From<&str> for Ident {
fn from(value: &str) -> Self {
Ident {
value: value.to_string(),
quote_style: None,
}
}
}
impl fmt::Display for Ident {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match self.quote_style {
Some(q) if q == '"' || q == '\'' || q == '`' => write!(f, "{}{}{}", q, self.value, q),
Some('[') => write!(f, "[{}]", self.value),
None => f.write_str(&self.value),
_ => panic!("unexpected quote style"),
}
}
}
/// A name of a table, view, custom type, etc., possibly multi-part, i.e. db.schema.obj
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct ObjectName(pub Vec<Ident>);
impl fmt::Display for ObjectName {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{}", display_separated(&self.0, "."))
}
}
/// An SQL expression of any type.
///
/// The parser does not distinguish between expressions of different types
/// (e.g. boolean vs string), so the caller must handle expressions of
/// inappropriate type, like `WHERE 1` or `SELECT 1=1`, as necessary.
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub enum Expr {
/// Identifier e.g. table name or column name
Identifier(Ident),
/// Unqualified wildcard (`*`). SQL allows this in limited contexts, such as:
/// - right after `SELECT` (which is represented as a [SelectItem::Wildcard] instead)
/// - or as part of an aggregate function, e.g. `COUNT(*)`,
///
/// ...but we currently also accept it in contexts where it doesn't make
/// sense, such as `* + *`
Wildcard,
/// Qualified wildcard, e.g. `alias.*` or `schema.table.*`.
/// (Same caveats apply to `QualifiedWildcard` as to `Wildcard`.)
QualifiedWildcard(Vec<Ident>),
/// Multi-part identifier, e.g. `table_alias.column` or `schema.table.col`
CompoundIdentifier(Vec<Ident>),
/// `IS NULL` expression
IsNull(Box<Expr>),
/// `IS NOT NULL` expression
IsNotNull(Box<Expr>),
/// `[ NOT ] IN (val1, val2, ...)`
InList {
expr: Box<Expr>,
list: Vec<Expr>,
negated: bool,
},
ValueList(Vec<Expr>),
/// `[ NOT ] IN (SELECT ...)`
InSubquery {
expr: Box<Expr>,
subquery: Box<Query>,
negated: bool,
},
/// `<expr> [ NOT ] BETWEEN <low> AND <high>`
Between {
expr: Box<Expr>,
negated: bool,
low: Box<Expr>,
high: Box<Expr>,
},
/// Binary operation e.g. `1 + 1` or `foo > bar`
BinaryOp {
left: Box<Expr>,
op: BinaryOperator,
right: Box<Expr>,
},
/// Unary operation e.g. `NOT foo`
UnaryOp {
op: UnaryOperator,
expr: Box<Expr>,
},
/// CAST an expression to a different data type e.g. `CAST(foo AS VARCHAR(123))`
Cast {
expr: Box<Expr>,
data_type: DataType,
},
Extract {
field: DateTimeField,
expr: Box<Expr>,
},
/// `expr COLLATE collation`
Collate {
expr: Box<Expr>,
collation: ObjectName,
},
/// Nested expression e.g. `(foo > bar)` or `(1)`
Nested(Box<Expr>),
/// A literal value, such as string, number, date or NULL
Value(Value),
/// Scalar function call e.g. `LEFT(foo, 5)`
Function(Function),
/// `CASE [<operand>] WHEN <condition> THEN <result> ... [ELSE <result>] END`
///
/// Note we only recognize a complete single expression as `<condition>`,
/// not `< 0` nor `1, 2, 3` as allowed in a `<simple when clause>` per
/// <https://jakewheat.github.io/sql-overview/sql-2011-foundation-grammar.html#simple-when-clause>
Case {
operand: Option<Box<Expr>>,
conditions: Vec<Expr>,
results: Vec<Expr>,
else_result: Option<Box<Expr>>,
},
/// An exists expression `EXISTS(SELECT ...)`, used in expressions like
/// `WHERE EXISTS (SELECT ...)`.
Exists(Box<Query>),
/// A parenthesized subquery `(SELECT ...)`, used in expression like
/// `SELECT (subquery) AS x` or `WHERE (subquery) = x`
Subquery(Box<Query>),
}
impl fmt::Display for Expr {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match self {
Expr::Identifier(s) => write!(f, "{}", s),
Expr::Wildcard => f.write_str("*"),
Expr::QualifiedWildcard(q) => write!(f, "{}.*", display_separated(q, ".")),
Expr::CompoundIdentifier(s) => write!(f, "{}", display_separated(s, ".")),
Expr::IsNull(ast) => write!(f, "{} IS NULL", ast),
Expr::IsNotNull(ast) => write!(f, "{} IS NOT NULL", ast),
Expr::InList {
expr,
list,
negated,
} => write!(
f,
"{} {}IN ({})",
expr,
if *negated { "NOT " } else { "" },
display_comma_separated(list)
),
Expr::ValueList(list) => write!(f, "({})", display_comma_separated(list)),
Expr::InSubquery {
expr,
subquery,
negated,
} => write!(
f,
"{} {}IN ({})",
expr,
if *negated { "NOT " } else { "" },
subquery
),
Expr::Between {
expr,
negated,
low,
high,
} => write!(
f,
"{} {}BETWEEN {} AND {}",
expr,
if *negated { "NOT " } else { "" },
low,
high
),
Expr::BinaryOp { left, op, right } => write!(f, "{} {} {}", left, op, right),
Expr::UnaryOp { op, expr } => write!(f, "{} {}", op, expr),
Expr::Cast { expr, data_type } => write!(f, "CAST({} AS {})", expr, data_type),
Expr::Extract { field, expr } => write!(f, "EXTRACT({} FROM {})", field, expr),
Expr::Collate { expr, collation } => write!(f, "{} COLLATE {}", expr, collation),
Expr::Nested(ast) => write!(f, "({})", ast),
Expr::Value(v) => write!(f, "{}", v),
Expr::Function(fun) => write!(f, "{}", fun),
Expr::Case {
operand,
conditions,
results,
else_result,
} => {
f.write_str("CASE")?;
if let Some(operand) = operand {
write!(f, " {}", operand)?;
}
for (c, r) in conditions.iter().zip(results) {
write!(f, " WHEN {} THEN {}", c, r)?;
}
if let Some(else_result) = else_result {
write!(f, " ELSE {}", else_result)?;
}
f.write_str(" END")
}
Expr::Exists(s) => write!(f, "EXISTS ({})", s),
Expr::Subquery(s) => write!(f, "({})", s),
}
}
}
/// A window specification (i.e. `OVER (PARTITION BY .. ORDER BY .. etc.)`)
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct WindowSpec {
pub partition_by: Vec<Expr>,
pub order_by: Vec<OrderByExpr>,
pub window_frame: Option<WindowFrame>,
}
impl fmt::Display for WindowSpec {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let mut delim = "";
if !self.partition_by.is_empty() {
delim = " ";
write!(
f,
"PARTITION BY {}",
display_comma_separated(&self.partition_by)
)?;
}
if !self.order_by.is_empty() {
f.write_str(delim)?;
delim = " ";
write!(f, "ORDER BY {}", display_comma_separated(&self.order_by))?;
}
if let Some(window_frame) = &self.window_frame {
if let Some(end_bound) = &window_frame.end_bound {
f.write_str(delim)?;
write!(
f,
"{} BETWEEN {} AND {}",
window_frame.units, window_frame.start_bound, end_bound
)?;
} else {
f.write_str(delim)?;
write!(f, "{} {}", window_frame.units, window_frame.start_bound)?;
}
}
Ok(())
}
}
/// Specifies the data processed by a window function, e.g.
/// `RANGE UNBOUNDED PRECEDING` or `ROWS BETWEEN 5 PRECEDING AND CURRENT ROW`.
///
/// Note: The parser does not validate the specified bounds; the caller should
/// reject invalid bounds like `ROWS UNBOUNDED FOLLOWING` before execution.
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct WindowFrame {
pub units: WindowFrameUnits,
pub start_bound: WindowFrameBound,
/// The right bound of the `BETWEEN .. AND` clause. The end bound of `None`
/// indicates the shorthand form (e.g. `ROWS 1 PRECEDING`), which must
/// behave the same as `end_bound = WindowFrameBound::CurrentRow`.
pub end_bound: Option<WindowFrameBound>,
// TBD: EXCLUDE
}
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub enum WindowFrameUnits {
Rows,
Range,
Groups,
}
impl fmt::Display for WindowFrameUnits {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.write_str(match self {
WindowFrameUnits::Rows => "ROWS",
WindowFrameUnits::Range => "RANGE",
WindowFrameUnits::Groups => "GROUPS",
})
}
}
impl FromStr for WindowFrameUnits {
type Err = ParserError;
fn from_str(s: &str) -> Result<Self, Self::Err> {
match s {
"ROWS" => Ok(WindowFrameUnits::Rows),
"RANGE" => Ok(WindowFrameUnits::Range),
"GROUPS" => Ok(WindowFrameUnits::Groups),
_ => Err(ParserError::ParserError(format!(
"Expected ROWS, RANGE, or GROUPS, found: {}",
s
))),
}
}
}
/// Specifies [WindowFrame]'s `start_bound` and `end_bound`
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub enum WindowFrameBound {
/// `CURRENT ROW`
CurrentRow,
/// `<N> PRECEDING` or `UNBOUNDED PRECEDING`
Preceding(Option<u64>),
/// `<N> FOLLOWING` or `UNBOUNDED FOLLOWING`.
Following(Option<u64>),
}
impl fmt::Display for WindowFrameBound {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match self {
WindowFrameBound::CurrentRow => f.write_str("CURRENT ROW"),
WindowFrameBound::Preceding(None) => f.write_str("UNBOUNDED PRECEDING"),
WindowFrameBound::Following(None) => f.write_str("UNBOUNDED FOLLOWING"),
WindowFrameBound::Preceding(Some(n)) => write!(f, "{} PRECEDING", n),
WindowFrameBound::Following(Some(n)) => write!(f, "{} FOLLOWING", n),
}
}
}
/// A top-level statement (SELECT, INSERT, CREATE, etc.)
#[allow(clippy::large_enum_variant)]
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub enum Statement {
/// SELECT
Query(Box<Query>),
/// INSERT
Insert {
/// TABLE
table_name: ObjectName,
/// COLUMNS
columns: Vec<Ident>,
/// A SQL query that specifies what to insert
source: Box<Query>,
},
Copy {
/// TABLE
table_name: ObjectName,
/// COLUMNS
columns: Vec<Ident>,
/// VALUES a vector of values to be copied
values: Vec<Option<String>>,
},
/// UPDATE
Update {
/// TABLE
table_name: ObjectName,
/// Column assignments
assignments: Vec<Assignment>,
/// WHERE
selection: Option<Expr>,
},
/// DELETE
Delete {
/// FROM
table_name: ObjectName,
/// WHERE
selection: Option<Expr>,
},
/// CREATE VIEW
CreateView {
/// View name
name: ObjectName,
columns: Vec<Ident>,
query: Box<Query>,
materialized: bool,
with_options: Vec<SqlOption>,
},
/// CREATE TABLE
CreateTable {
if_not_exists: bool,
/// Table name
name: ObjectName,
/// Optional schema
columns: Vec<ColumnDef>,
constraints: Vec<TableConstraint>,
with_options: Vec<SqlOption>,
external: bool,
file_format: Option<FileFormat>,
location: Option<String>,
},
/// ALTER TABLE
AlterTable {
/// Table name
name: ObjectName,
operation: AlterTableOperation,
},
/// DROP
Drop {
/// The type of the object to drop: TABLE, VIEW, etc.
object_type: ObjectType,
/// An optional `IF EXISTS` clause. (Non-standard.)
if_exists: bool,
/// One or more objects to drop. (ANSI SQL requires exactly one.)
names: Vec<ObjectName>,
/// Whether `CASCADE` was specified. This will be `false` when
/// `RESTRICT` or no drop behavior at all was specified.
cascade: bool,
},
}
impl fmt::Display for Statement {
// Clippy thinks this function is too complicated, but it is painful to
// split up without extracting structs for each `Statement` variant.
#[allow(clippy::cognitive_complexity)]
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match self {
Statement::Query(s) => write!(f, "{}", s),
Statement::Insert {
table_name,
columns,
source,
} => {
write!(f, "INSERT INTO {} ", table_name)?;
if !columns.is_empty() {
write!(f, "({}) ", display_comma_separated(columns))?;
}
write!(f, "{}", source)
}
Statement::Copy {
table_name,
columns,
values,
} => {
write!(f, "COPY {}", table_name)?;
if !columns.is_empty() {
write!(f, " ({})", display_comma_separated(columns))?;
}
write!(f, " FROM stdin; ")?;
if !values.is_empty() {
writeln!(f)?;
let mut delim = "";
for v in values {
write!(f, "{}", delim)?;
delim = "\t";
if let Some(v) = v {
write!(f, "{}", v)?;
} else {
write!(f, "\\N")?;
}
}
}
write!(f, "\n\\.")
}
Statement::Update {
table_name,
assignments,
selection,
} => {
write!(f, "UPDATE {}", table_name)?;
if !assignments.is_empty() {
write!(f, " SET ")?;
write!(f, "{}", display_comma_separated(assignments))?;
}
if let Some(selection) = selection {
write!(f, " WHERE {}", selection)?;
}
Ok(())
}
Statement::Delete {
table_name,
selection,
} => {
write!(f, "DELETE FROM {}", table_name)?;
if let Some(selection) = selection {
write!(f, " WHERE {}", selection)?;
}
Ok(())
}
Statement::CreateView {
name,
columns,
query,
materialized,
with_options,
} => {
write!(f, "CREATE")?;
if *materialized {
write!(f, " MATERIALIZED")?;
}
write!(f, " VIEW {}", name)?;
if !with_options.is_empty() {
write!(f, " WITH ({})", display_comma_separated(with_options))?;
}
if !columns.is_empty() {
write!(f, " ({})", display_comma_separated(columns))?;
}
write!(f, " AS {}", query)
}
Statement::CreateTable {
name,
if_not_exists,
columns,
constraints,
with_options,
external,
file_format,
location,
} => {
write!(
f,
"CREATE {}TABLE {}{} ({}",
if *external { "EXTERNAL " } else { "" },
if *if_not_exists { "IF NOT EXISTS " } else { "" },
name,
display_comma_separated(columns)
)?;
if !constraints.is_empty() {
write!(f, ", {}", display_comma_separated(constraints))?;
}
write!(f, ")")?;
if *external {
write!(
f,
" STORED AS {} LOCATION '{}'",
file_format.as_ref().unwrap(),
location.as_ref().unwrap()
)?;
}
if !with_options.is_empty() {
write!(f, " WITH ({})", display_comma_separated(with_options))?;
}
Ok(())
}
Statement::AlterTable { name, operation } => {
write!(f, "ALTER TABLE {} {}", name, operation)
}
Statement::Drop {
object_type,
if_exists,
names,
cascade,
} => write!(
f,
"DROP {}{} {}{}",
object_type,
if *if_exists { " IF EXISTS" } else { "" },
display_comma_separated(names),
if *cascade { " CASCADE" } else { "" },
),
}
}
}
/// SQL assignment `foo = expr` as used in SQLUpdate
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct Assignment {
pub id: Ident,
pub value: Expr,
}
impl fmt::Display for Assignment {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{} = {}", self.id, self.value)
}
}
/// A function call
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct Function {
pub name: ObjectName,
pub args: Vec<Expr>,
pub over: Option<WindowSpec>,
// aggregate functions may specify eg `COUNT(DISTINCT x)`
pub distinct: bool,
}
impl fmt::Display for Function {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(
f,
"{}({}{})",
self.name,
if self.distinct { "DISTINCT " } else { "" },
display_comma_separated(&self.args),
)?;
if let Some(o) = &self.over {
write!(f, " OVER ({})", o)?;
}
Ok(())
}
}
/// External table's available file format
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub enum FileFormat {
TEXTFILE,
SEQUENCEFILE,
ORC,
PARQUET,
AVRO,
RCFILE,
JSONFILE,
}
impl fmt::Display for FileFormat {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
use self::FileFormat::*;
f.write_str(match self {
TEXTFILE => "TEXTFILE",
SEQUENCEFILE => "SEQUENCEFILE",
ORC => "ORC",
PARQUET => "PARQUET",
AVRO => "AVRO",
RCFILE => "RCFILE",
JSONFILE => "TEXTFILE",
})
}
}
use crate::parser::ParserError;
use std::str::FromStr;
impl FromStr for FileFormat {
type Err = ParserError;
fn from_str(s: &str) -> Result<Self, Self::Err> {
use self::FileFormat::*;
match s {
"TEXTFILE" => Ok(TEXTFILE),
"SEQUENCEFILE" => Ok(SEQUENCEFILE),
"ORC" => Ok(ORC),
"PARQUET" => Ok(PARQUET),
"AVRO" => Ok(AVRO),
"RCFILE" => Ok(RCFILE),
"JSONFILE" => Ok(JSONFILE),
_ => Err(ParserError::ParserError(format!(
"Unexpected file format: {}",
s
))),
}
}
}
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub enum ObjectType {
Table,
View,
}
impl fmt::Display for ObjectType {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.write_str(match self {
ObjectType::Table => "TABLE",
ObjectType::View => "VIEW",
})
}
}
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct SqlOption {
pub name: Ident,
pub value: Value,
}
impl fmt::Display for SqlOption {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{} = {}", self.name, self.value)
}
}