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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project aims to adhere to Semantic Versioning.

Given that the parser produces a typed AST, any changes to the AST will technically be breaking and thus will result in a 0.(N+1) version. We document changes that break via addition as "Added".

[Unreleased]

Check https://github.com/ballista-compute/sqlparser-rs/commits/main for undocumented changes.

[0.8.0] 2020-03-21

Added

  • Add support for TRY_CAST syntax (#299) - Thanks @seddonm1!

[0.8.0] 2020-02-20

Added

  • Introduce Hive QL dialect HiveDialect and syntax (#235) - Thanks @hntd187!
  • Add SUBSTRING(col [FROM <expr>] [FOR <expr>]) syntax (#293)
  • Support parsing floats without leading digits .01 (#294)
  • Support parsing multiple show variables (#290) - Thanks @francis-du!
  • Support SQLite INSERT OR [..] syntax (#281) - Thanks @zhangli-pear!

[0.7.0] 2020-12-28

Changed

  • Change the MySQL dialect to support `identifiers` quoted with backticks instead of the standard "double-quoted" identifiers (#247) - thanks @mashuai!
  • Update bigdecimal requirement from 0.1 to 0.2 (#268)

Added

  • Enable dialect-specific behaviours in the parser (dialect_of!()) (#254) - thanks @eyalleshem!
  • Support named arguments in function invocations (ARG_NAME => val) (#250) - thanks @eyalleshem!
  • Support TABLE() functions in FROM (#253) - thanks @eyalleshem!
  • Support Snowflake's single-line comments starting with '#' or '//' (#264) - thanks @eyalleshem!
  • Support PostgreSQL PREPARE, EXECUTE, and DEALLOCATE (#243) - thanks @silathdiir!
  • Support PostgreSQL math operators (#267) - thanks @alex-dukhno!
  • Add SQLite dialect (#248) - thanks @mashuai!
  • Add Snowflake dialect (#259) - thanks @eyalleshem!
  • Support for Recursive CTEs - thanks @rhanqtl!
  • Support FROM (table_name) alias syntax - thanks @eyalleshem!
  • Support for EXPLAIN [ANALYZE] VERBOSE - thanks @ovr!
  • Support ANALYZE TABLE
  • DDL:
    • Support OR REPLACE in CREATE VIEW/TABLE (#239) - thanks @Dandandan!
    • Support specifying ASC/DESC in index columns (#249) - thanks @mashuai!
    • Support SQLite AUTOINCREMENT and MySQL AUTO_INCREMENT column option in CREATE TABLE (#234) - thanks @mashuai!
    • Support PostgreSQL IF NOT EXISTS for CREATE SCHEMA (#276) - thanks @alex-dukhno!

Fixed

  • Fix a typo in JSONFILE serialization, introduced in 0.3.1 (#237)
  • Change CREATE INDEX serialization to not end with a semicolon, introduced in 0.5.1 (#245)
  • Don't fail parsing ALTER TABLE ADD COLUMN ending with a semicolon, introduced in 0.5.1 (#246) - thanks @mashuai

[0.6.1] - 2020-07-20

Added

  • Support BigQuery ASSERT statement (#226)

[0.6.0] - 2020-07-20

Added

  • Support SQLite's CREATE TABLE (...) WITHOUT ROWID (#208) - thanks @mashuai!
  • Support SQLite's CREATE VIRTUAL TABLE (#209) - thanks @mashuai!

[0.5.1] - 2020-06-26

This release should have been called 0.6, as it introduces multiple incompatible changes to the API. If you don't want to upgrade yet, you can revert to the previous version by changing your Cargo.toml to:

sqlparser = "= 0.5.0"

Changed

  • Parser::parse_sql now accepts a &str instead of String (#182) - thanks @Dandandan!
  • Change Ident (previously a simple String) to store the parsed (unquoted) value of the identifier and the quote_style separately (#143) - thanks @apparebit!
  • Support Snowflake's FROM (table_name) (#155) - thanks @eyalleshem!
  • Add line and column number to TokenizerError (#194) - thanks @Dandandan!
  • Use Token::EOF instead of Option (#195)
  • Make the units keyword following INTERVAL '...' optional (#184) - thanks @maxcountryman!
  • Generalize DATE/TIME/TIMESTAMP literals representation in the AST (TypedString { data_type, value }) and allow DATE and other keywords to be used as identifiers when not followed by a string (#187) - thanks @maxcountryman!
  • Output DataType capitalized (fmt::Display) (#202) - thanks @Dandandan!

Added

  • Support MSSQL TOP (<N>) [ PERCENT ] [ WITH TIES ] (#150) - thanks @alexkyllo!
  • Support MySQL LIMIT row_count OFFSET offset (not followed by ROW or ROWS) and remember which variant was parsed (#158) - thanks @mjibson!
  • Support PostgreSQL CREATE TABLE IF NOT EXISTS table_name (#163) - thanks @alex-dukhno!
  • Support basic forms of CREATE INDEX and DROP INDEX (#167) - thanks @mashuai!
  • Support ON { UPDATE | DELETE } { RESTRICT | CASCADE | SET NULL | NO ACTION | SET DEFAULT } in FOREIGN KEY constraints (#170) - thanks @c7hm4r!
  • Support basic forms of CREATE SCHEMA and DROP SCHEMA (#173) - thanks @alex-dukhno!
  • Support NULLS FIRST/LAST in ORDER BY expressions (#176) - thanks @houqp!
  • Support LISTAGG() (#174) - thanks @maxcountryman!
  • Support the string concatentation operator || (#178) - thanks @Dandandan!
  • Support bitwise AND (&), OR (|), XOR (^) (#181) - thanks @Dandandan!
  • Add serde support to AST structs and enums (#196) - thanks @panarch!
  • Support ALTER TABLE ADD COLUMN, RENAME COLUMN, and RENAME TO (#203) - thanks @mashuai!
  • Support ALTER TABLE DROP COLUMN (#148) - thanks @ivanceras!
  • Support CREATE TABLE ... AS ... (#206) - thanks @Dandandan!

Fixed

  • Report an error for unterminated string literals (#165)
  • Make file format (STORED AS) case insensitive (#200) and don't allow quoting it (#201) - thanks @Dandandan!

[0.5.0] - 2019-10-10

Changed

  • Replace the Value::Long(u64) and Value::Double(f64) variants with Value::Number(String) to avoid losing precision when parsing decimal literals (#130) - thanks @benesch!
  • --features bigdecimal can be enabled to work with Value::Number(BigDecimal) instead, at the cost of an additional dependency.

Added

  • Support MySQL SHOW COLUMNS, SET <variable>=<value>, and SHOW <variable> statements (#135) - thanks @quodlibetor and @benesch!

Fixed

  • Don't fail to parse START TRANSACTION followed by a semicolon (#139) - thanks @gaffneyk!

[0.4.0] - 2019-07-02

This release brings us closer to SQL-92 support, mainly thanks to the improvements contributed back from @MaterializeInc's fork and other work by @benesch.

Changed

  • Remove "SQL" from type and enum variant names, SQLType -> DataType, remove "sql" prefix from module names (#105, #122)
  • Rename ASTNode -> Expr (#119)
  • Improve consistency of binary/unary op nodes (#112):
    • ASTNode::SQLBinaryExpr is now Expr::BinaryOp and ASTNode::SQLUnary is Expr::UnaryOp;
    • The op: SQLOperator field is now either a BinaryOperator or an UnaryOperator.
  • Change the representation of JOINs to match the standard (#109): SQLSelect's relation and joins are replaced with from: Vec<TableWithJoins>. Before this change FROM foo NATURAL JOIN bar, baz was represented as "foo" as the relation followed by two joins (Inner(Natural) and Implicit); now it's two TableWithJoins (foo NATURAL JOIN bar and baz).
  • Extract a SQLFunction struct (#89)
  • Replace Option<Vec<T>> with Vec<T> in the AST structs (#73)
  • Change Value::Long() to be unsigned, use u64 consistently (#65)

Added

  • Infra:
    • Implement fmt::Display on AST nodes (#124) - thanks @vemoo!
    • Implement Hash (#88) and Eq (#123) on all AST nodes
    • Implement std::error::Error for ParserError (#72)
    • Handle Windows line-breaks (#54)
  • Expressions:
    • Support INTERVAL literals (#103)
    • Support DATE / TIME / TIMESTAMP literals (#99)
    • Support EXTRACT (#96)
    • Support X'hex value' literals (#95)
    • Support EXISTS subqueries (#90)
    • Support nested expressions in BETWEEN (#80)
    • Support COUNT(DISTINCT x) and similar (#77)
    • Support CASE operand WHEN expected_value THEN .. and table-valued functions (#59)
    • Support analytic (window) functions (OVER clause) (#50)
  • Queries / DML:
    • Support nested joins (#100) and derived tables with set operations (#111)
    • Support UPDATE statements (#97)
    • Support INSERT INTO foo SELECT * FROM bar and FROM VALUES (...) (#91)
    • Support SELECT ALL (#76)
    • Add FETCH and OFFSET support, and LATERAL (#69) - thanks @thomas-jeepe!
    • Support COLLATE, optional column list in CTEs (#64)
  • DDL/TCL:
    • Support START/SET/COMMIT/ROLLBACK TRANSACTION (#106) - thanks @SamuelMarks!
    • Parse column constraints in any order (#93)
    • Parse DECIMAL and DEC aliases for NUMERIC type (#92)
    • Support DROP [TABLE|VIEW] (#75)
    • Support arbitrary WITH options for CREATE [TABLE|VIEW] (#74)
    • Support constraints in CREATE TABLE (#65)
  • Add basic MSSQL dialect (#61) and some MSSQL-specific features:
    • CROSS/OUTER APPLY (#120)
    • MSSQL identifier and alias parsing rules (#66)
    • WITH hints (#59)

Fixed

  • Report an error for SELECT * FROM a OUTER JOIN b instead of parsing OUTER as an alias (#118)
  • Fix the precedence of NOT LIKE (#82) and unary NOT (#107)
  • Do not panic when NOT is not followed by an expected keyword (#71) successfully instead of returning a parse error - thanks @ivanceras! (#67) - and similar fixes for queries with no FROM (#116)
  • Fix issues with ALTER TABLE ADD CONSTRAINT parsing (#65)
  • Serialize the "not equals" operator as <> instead of != (#64)
  • Remove dependencies on uuid (#59) and chrono (#61)
  • Make SELECT query with LIMIT clause but no WHERE parse - Fix incorrect behavior of ASTNode::SQLQualifiedWildcard::to_string() (returned foo* instead of foo.*) - thanks @thomas-jeepe! (#52)

[0.3.1] - 2019-04-20

Added

  • Extended SQLStatement::SQLCreateTable to support Hive's EXTERNAL TABLES (CREATE EXTERNAL TABLE .. STORED AS .. LOCATION '..') - thanks @zhzy0077! (#46)
  • Parse SELECT DISTINCT to SQLSelect::distinct (#49)

[0.3.0] - 2019-04-03

Changed

This release includes major changes to the AST structs to add a number of features, as described in #37 and #43. In particular:

  • ASTNode variants that represent statements were extracted from ASTNode into a separate SQLStatement enum;
    • Parser::parse_sql now returns a Vec of parsed statements.
    • ASTNode now represents an expression (renamed to Expr in 0.4.0)
  • The query representation (formerly ASTNode::SQLSelect) became more complicated to support:
    • WITH and UNION/EXCEPT/INTERSECT (via SQLQuery, Cte, and SQLSetExpr),
    • aliases and qualified wildcards in SELECT (via SQLSelectItem),
    • and aliases in FROM/JOIN (via TableFactor).
  • A new SQLObjectName struct is used instead of String or ASTNode::SQLCompoundIdentifier - for objects like tables, custom types, etc.
  • Added support for "delimited identifiers" and made keywords context-specific (thus accepting them as valid identifiers in most contexts) - this caused a regression in parsing SELECT .. FROM .. LIMIT .. (#67), fixed in 0.4.0

Added

Other than the changes listed above, some less intrusive additions include:

  • Support CREATE [MATERIALIZED] VIEW statement
  • Support IN, BETWEEN, unary +/- in epressions
  • Support CHAR data type and NUMERIC not followed by (p,s).
  • Support national string literals (N'...')

[0.2.4] - 2019-03-08

Same as 0.2.2.

[0.2.3] - 2019-03-08 [YANKED]

[0.2.2] - 2019-03-08

Changed

  • Removed Value::String, Value::DoubleQuotedString, and Token::String, making
    • '...' parse as a string literal (Value::SingleQuotedString), and
    • "..." fail to parse until version 0.3.0 (#36)

[0.2.1] - 2019-01-13

We don't have a changelog for the changes made in 2018, but thanks to @crw5996, @cswinter, @fredrikroos, @ivanceras, @nickolay, @virattara for their contributions in the early stages of the project!

[0.1.0] - 2018-09-03

Initial release