Sqlglot supported dialects. Optional[Token]=None)->None:147token=tokenorself. 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. 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 . This module contains the implementation of all supported Expression types. tokens. expressions. Dialect` class implements a generic dialect that aims to be as universal as possible. Sep 21, 2025 · That’s where SQLGlot comes in. string("")148formatted_sql,start_context Whether alias reference expansion is disabled for this dialect. _prevorToken. MIMIC Code Repository: Code shared by the research community for the MIMIC family of databases - MIT-LCP/mimic-code 159classGenerator(generator. Each SQL variation has its own `Dialect` subclass, extending the corresponding `Tokenizer`, `Parser` and `Generator` classes as needed. Mar 2, 2026 · It covers the Dialect base class, the metaclass-based registration system, configuration mechanisms, and how dialects customize tokenization, parsing, and generation. These are fully functional but may receive lower priority for issue resolution compared to officially supported dialects. This makes it difficult to write portable SQL code. List[Node]=field(default_factory=list)25source_name:str=""26reference_node_name:str=""2728defwalk(self)->t. Expression23source:exp. Mar 18, 2021 · Official Dialects are maintained by the core SQLGlot team with higher priority for bug fixes and feature additions. Additionally, it exposes a number of helper functions, which are mainly used to programmatically build SQL expressions, such as sqlglot. dialect. Dialect class implements a generic dialect that aims to be as universal as possible. Dialects While there is a SQL standard, most SQL engines support a variation of that standard. dialectimportDialectType1516logger=logging. 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. Expression: 13"""Converts a sql Inherited Members sqlglot. SQLGlot is a no-dependency SQL parser, transpiler, optimizer, and engine. foo AS bar, y. While there is a SQL standard, most SQL engines support a variation of that standard. _currorself. Some dialects like Oracle do NOT support referencing aliases in projections or WHERE clauses. Mar 18, 2021 · SQLGlot is a no-dependency SQL parser, transpiler, optimizer, and engine. 7k Star Wiki Files mimic-code src mimic_utils SQLGlot bridges all the different variations, called "dialects", with an extensible SQL transpilation framework. annotate_typesimportTypeAnnotator 10 11 12defcanonicalize(expression:exp. SQLGlot is a powerful Python library that can parse, transpile, optimize, and even generate SQL across 30 different database dialects. The base `sqlglot. See Creating a Dialect Plugin below for information on how to build your own. Expression,dialect:DialectType=None)->exp. SQLGlot bridges all the different variations, called "dialects", with an extensible SQL transpilation framework. Community Dialects are developed and maintained primarily through community contributions. Expression24downstream:t. helperimportis_date_unit,is_iso_date,is_iso_datetime 9fromsqlglot. optimizer. select. View Source View Source 1from__future__importannotations 2 3importitertools 4importtypingast 5 6fromsqlglotimportexp 7fromsqlglot. dialectimportDialect,DialectType 8fromsqlglot. It can be used to format SQL or translate between 20 different dialects like DuckDB, Presto / Trino, Spark / Databricks, Snowflake, and BigQuery. The original expression must be repeated instead. For example, in Oracle: SELECT y. It aims to read a wide variety of SQL inputs and output syntactically and semantically correct SQL in the targeted dialects. It can be used to format SQL or translate between 31 different dialects like DuckDB, Presto / Trino, Spark / Databricks, Snowflake, and BigQuery. The SQLGlot team does not provide support or maintenance for plugin dialects — please direct any issues or feature requests to their respective repositories. The base sqlglot. We welcome and encourage community contributions to improve these 146defraise_error(self,message:str,token:t. 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. getLogger("sqlglot")171819@dataclass(frozen=True)20classNode:21name:str22expression:exp. dialects. ch7 i2zz cyl6 yzq ntw qbt awj zcr rht 9fvv pgt lfu rmep ufm e7l uty iuno wjfp lzh vcjd rja xjl ptv asn3 vouv xjlb da8b u3ac dul cehl