0.19.0

Breaking changes

• Unary + is now parsed as an operator, not as part of a number
• data_type has been renamed to named_data_type
• select_clause columns are now optional
• SymbolOperator type is now plain string (because it needs to accommodate custom PostgreSQL operators)
• RowConstructor type is now part of Expr type

SQLite bugfixes

• Support unicode letters in SQLite identifiers

Improved PostgreSQL support

• Use the actual Postgres reserved words list
• Nested block-comments
• Remove incorrect #-comment support from Postgres
• Strings:
  • Dollar-quoted strings
  • String with C-style escapes
  • Unicode strings
  • Repeated-quote escapes in E-strings
  • Bit-string blobs
• Identifiers:
  • Unicode identifiers
• Literals:
  • JSON & JSONB literals
  • INTERVAL literals
• ROW() constructor
• EXTRACT() expression
• Special paren-less functions
• All keywords can be used in explicit aliases
• Operators:
  • IS UNKNOWN
  • IS DISTINCT FROM
  • ISNULL
  • NOTNULL
  • % operator
  • ^ operator
  • || operator
  • Bitwise ~ and # operators
  • ILIKE
  • BETWEEN SYMMETRIC
  • SIMILAR TO
  • IS NORMALIZED
  • AT TIME ZONE
  • COLLATE
  • Array-access operator
  • Array-slice operator
  • :: cast operator
  • All the builtin PostgreSQL operators
  • Almost fully correct PostgreSQL operator precedence
• Types:
  • All builtin data types
  • Special Object Identifier types
  • multi-dimensional array types
  • TIME types WITH/WITHOUT TIME ZONE
  • INTERVAL type
  • Custom data types
• SELECT support:
  • Support NULLS FIRST/LAST
  • LIMIT offset,count is not supported
  • Support FETCH..OFFSET
  • Support FOR-clause
  • Support INTO TABLE clause
  • Support empty SELECT
  • Support GROUP BY DISTINCT
  • Support LIMIT ALL
  • Support basic TABLE clause
• Basic TRUNCATE support
• Basic ANALYZE support
• Basic EXPLAIN support
• Basic EXECUTE support

Improved MySQL & MariaDB support

• Support FOR-clause in MySQL and MariaDB
• Support LOCK IN SHARE MODE in MySQL/MariaDB

0.18.0

Breaking changes

• columns field has been moved from insert_clause to new insert_columns_clause.
  This is because MySQL allows partition_clause to be optionally placed between insert_clause and the list of columns.
• truncateTableKw in truncate_stmt has been replaced with truncateKw and tableKw fields.

Improved MySQL/MariaDB support

• Support INSERT..SET
• Support PARTITION clause in INSERT
• Support TABLE statements
• Support ON DUPLICATE KEY UPDATE clause
• Support row and columns aliases in INSERT
• Support VALUES() function
• Support RENAME TABLE statement
• Support basic ALTER VIEW
• Support unicode and $ in identifiers
• Allow identifiers to start with $

Initial PostgeSQL support

Experimental support for Postgres. This is really more on the level of "please don't use it".

• double-quoted identifiers
• HEX numbers
• Basic Postgres strings
• basic INSERT statement
• For now support the same data types as SQLite
• Basic transactions
• unicode and $ in identifiers
• binary numbers
• octal numbers
• Basic array literals

0.17.1

Performance

• Improve performance of parsing nested parenthesis, especially in MySQL #38

0.17.0

Breaking changes

• Renamed common_table_expression to common_table_expr (for consistency with other _expr node types).

New features

• paramTypes now supports new type "@`name`" #37
• cstVisitor now supports skipping child nodes by returning VistorAction.SKIP.