Sqlglot supported dialects. The base `sqlglot. Sep 21, 2025 · That’s where SQLGlot comes in. foo AS bar, bar * 2 AS baz FROM y -- INVALID SELECT y. Each SQL MIMIC Code Repository: Code shared by the research community for the MIMIC family of databases - MIT-LCP/mimic-code MIT-LCP / mimic-code Public Notifications You must be signed in to change notification settings Fork 1. Some dialects like Oracle do NOT support referencing aliases in projections or WHERE clauses. Generator):160JOIN_HINTS=False161TABLE_HINTS=False162QUERY_HINTS=False163NVL2_SUPPORTED=False164JSON_PATH_BRACKETED_KEY_SUPPORTED=False165SUPPORTS_CREATE_TABLE_LIKE=False166SUPPORTS_TABLE_ALIAS_COLUMNS=False167SUPPORTS_TO_NUMBER=False168SUPPORTS_WINDOW_EXCLUDE=True169EXCEPT_INTERSECT_SUPPORT_ALL_CLAUSE . _prevorToken. SQLGlot bridges all the different variations, called "dialects", with an extensible SQL transpilation framework. For example, in Oracle: SELECT y. Dialect` class implements a generic dialect that aims to be as universal as possible. dialectimportDialect,DialectType 8fromsqlglot. dialects. Optional[Token]=None)->None:147token=tokenorself. It can be used to format SQL or translate between 20 different dialects like DuckDB, Presto / Trino, Spark / Databricks, Snowflake, and BigQuery. optimizer. expressions. helperimportis_date_unit,is_iso_date,is_iso_datetime 9fromsqlglot. See Creating a Dialect Plugin below for information on how to build your own. We welcome and encourage community contributions to improve these 146defraise_error(self,message:str,token:t. Mar 18, 2021 · Official Dialects are maintained by the core SQLGlot team with higher priority for bug fixes and feature additions. It aims to read a wide variety of SQL inputs and output syntactically and semantically correct SQL in the targeted dialects. dialectimportDialectType1516logger=logging. View Source View Source 1from__future__importannotations 2 3importitertools 4importtypingast 5 6fromsqlglotimportexp 7fromsqlglot. _currorself. Each SQL variation has its own `Dialect` subclass, extending the corresponding `Tokenizer`, `Parser` and `Generator` classes as needed. dialect. List[Node]=field(default_factory=list)25source_name:str=""26reference_node_name:str=""2728defwalk(self)->t. Mar 18, 2021 · SQLGlot is a no-dependency SQL parser, transpiler, optimizer, and engine. The SQLGlot team does not provide support or maintenance for plugin dialects — please direct any issues or feature requests to their respective repositories. tokens. This module contains the implementation of all supported Expression types. It can be used to format SQL or translate between 31 different dialects like DuckDB, Presto / Trino, Spark / Databricks, Snowflake, and BigQuery. 7k Star Wiki Files mimic-code src mimic_utils SQLGlot bridges all the different variations, called "dialects", with an extensible SQL transpilation framework. The base sqlglot. Additionally, it exposes a number of helper functions, which are mainly used to programmatically build SQL expressions, such as sqlglot. select. The original expression must be repeated instead. This makes it difficult to write portable SQL code. Mar 2, 2026 · It covers the Dialect base class, the metaclass-based registration system, configuration mechanisms, and how dialects customize tokenization, parsing, and generation. MIMIC Code Repository: Code shared by the research community for the MIMIC family of databases - MIT-LCP/mimic-code 159classGenerator(generator. getLogger("sqlglot")171819@dataclass(frozen=True)20classNode:21name:str22expression:exp. Tokenizer Tokenizer BIT_STRINGS BYTE_STRINGS HEX_STRINGS RAW_STRINGS HEREDOC_STRINGS UNICODE_STRINGS IDENTIFIERS QUOTES VAR_SINGLE_TOKENS ESCAPE_FOLLOW_CHARS HEREDOC_TAG_IS_IDENTIFIER HEREDOC_STRING_ALTERNATIVE STRING_ESCAPES_ALLOWED_IN_RAW_STRINGS NESTED_COMMENTS HINT_START TOKENS_PRECEDING_HINT COMMANDS COMMAND_PREFIX_TOKENS NUMERIC_LITERALS COMMENTS dialect TYPE_CHECKING:14fromsqlglot. While there is a SQL standard, most SQL engines support a variation of that standard. These are fully functional but may receive lower priority for issue resolution compared to officially supported dialects. SQLGlot is a powerful Python library that can parse, transpile, optimize, and even generate SQL across 30 different database dialects. foo AS bar, y. Expression: 13"""Converts a sql Inherited Members sqlglot. Community Dialects are developed and maintained primarily through community contributions. Expression23source:exp. string("")148formatted_sql,start_context Whether alias reference expansion is disabled for this dialect. Expression,dialect:DialectType=None)->exp. foo * 2 AS baz FROM y -- VALID Jan 7, 2025 · If no dialect is specified, parse_one will attempt to parse the query according to the "SQLGlot dialect", which is designed to be a superset of all supported dialects. Dialect class implements a generic dialect that aims to be as universal as possible. Expression24downstream:t. Dialects While there is a SQL standard, most SQL engines support a variation of that standard. SQLGlot is a no-dependency SQL parser, transpiler, optimizer, and engine. annotate_typesimportTypeAnnotator 10 11 12defcanonicalize(expression:exp. 47lf ivyp 6s8b 9ry vpxh p2ni pmay 48t jyy q84 fc5d gtw a1qk tx2 okb hrxs nwox 3ki jfx ysrn b3qn y4i grfv vgmf kcf pui uly1 i3sk z8m ssrd