Results of 1 - 10 of about 22 for parser (0.002 sec.)
- Legacy Parser Extension 13433
- New The legacy_parser extension was introduced in DuckDB 2.0. DuckDB 2.0.0 replaced the PostgreSQL-derived parser with a new PEG-based parser . The legacy_parser extension allows reverting to the old parser. The PEG parser is designed to be
...compatible with the previous parser, so queries that parsed before should continue to parse. If a query that parsed on an earlier version fails on v2.0.0, ple...ase file an issue . Installing and Loading To install and load the legacy_parser extension, run: INSTALL AND LOAD legacy_parser; Usage To activate the legacy parser, run: SET enable_legacy_parser = true;...To switch back to the PEG parser, run: SET enable_legacy_parser = false;... - https://man.mtool.work/duckdb/2.0/core_extensions/legacy_parser.html
- PEG Parser 13433
- New Starting with DuckDB 2.0, the PEG parser is the default parser. In earlier versions it was an experimental, opt-in feature enabled with enable_peg_parser() , which is no longer required or available. DuckDB uses a parser based on PEG (
...parsing expression grammars ). It replaces the parser front end derived from PostgreSQL that earlier versions used. The PEG parser enables better suggestions, improved error me...command line client. DuckDB 1.5 shipped a complete but experimental version, and DuckDB 2.0 made it the default. Switching parsers does not change the SQL dialect. DuckDB 2.0 replaced the parser implementation and rewrote its grammar, but the dialect i...est of the query pipeline, including the binder, continue to operate on the same internal syntax tree. Suggestions The PEG parser is used to generate suggestions. You can cycle through the options using TAB : «animals_db» D FROM ducks WHERE habitat IS... - https://man.mtool.work/duckdb/2.0/sql/peg_parser.html
- Migrating to DuckDB 2.0 9494
- DuckDB 2.0.0 is packed with new features and performance improvements, including query optimization and asynchronous I/O. It also ships a small set of breaking changes, most notably a new default storage format, which DuckDB versions before
...temporary bridge: DuckDB 2.1 will remove it and the single arrow syntax entirely. For details, see Deprecated Syntax . SQL Parser DuckDB 2.0.0 replaced the PostgreSQL-derived parser with a new PEG-based parser . It is designed to be compatible with the...previous parser, so queries that parsed before should continue to parse, and error messages now include more precise source locations. If...a query that parsed on an earlier version fails on v2.0.0, please file an issue . For details, see the PEG parser page . A few expressions deliberately behave differently in v2.0.0, which can silently change query results: The ~ and !~... - https://man.mtool.work/duckdb/2.0/operations_manual/migration.html
- What's New in the Docs for 2.0 8888
- This page tracks the documentation for the features introduced in DuckDB 2.0, organized around the themes of the DuckDB 2.0.0 release announcement . Each section links to the relevant documentation. DuckDB as a Server: Quack and CONNECT Sin
...t storage version Storage version table Migrating existing deployments: see the DuckDB 2.0 migration guide A Brand New SQL Parser DuckDB 2.0 introduced a PEG-based SQL parser that replaces the PostgreSQL-derived one and allows extensions to contribute...grammar. PEG parser Legacy parser extension for switching back to the old parser Timezones, Calendars and Collations Without ICU DuckDB 2.0 re... - https://man.mtool.work/duckdb/2.0/whats_new_in_the_docs.html
- Overview of DuckDB Internals 8804
- Tip For a detailed explanation of DuckDB internals, see the Design and Implementation of DuckDB Internals ("DiDi") library entry. On this page is a brief description of the internals of the DuckDB engine. Parser The parser converts a query
...string into the following tokens: SQLStatement QueryNode TableRef ParsedExpression The parser is not aware of the catalog or any other aspect of the database. It will not throw errors if tables do not exist, and will...pt for nodes with explicit types such as CAST statements. The types for expressions are resolved in the Binder, not in the Parser. TableRef The TableRef represents any table source. This can be a reference to a base table, but it can also be a join, a... - https://man.mtool.work/duckdb/2.0/internals/overview.html
- Functions 8417
- Function Syntax Function Chaining via the Dot Operator DuckDB supports the dot syntax for function chaining. This allows the function call fn(arg1, arg2, arg3, ...) to be rewritten as arg1.fn(arg2, arg3, ...) . For example, take the followi
...with parentheses, e.g.: SELECT (2).sqrt(); In the absence of these parentheses (e.g., SELECT 2.sqrt(); ), DuckDB returns a Parser Error for the function call: Parser Error: syntax error at or near "(" Limitations Function chaining via the dot operator...is limited to scalar functions and is not supported for table functions. For example, the following call returns a Parser Error : SELECT * FROM ('my_file.parquet').read_parquet(); -- does not work Query Functions The duckdb_functions() table fu... - https://man.mtool.work/duckdb/2.0/sql/functions/overview.html
- Core Extensions 8114
- List of Core Extensions Name Description Maintainer Support tier Aliases autocomplete Autocompletion for CLI client DuckDB team avro Avro files reading DuckDB team aws AWS S3 functionality DuckDB team azure Filesystem abstraction for Azure
...ted data types and functions DuckDB team json JSON operations DuckDB team lance Lance tables read/write Third party legacy_parser Legacy PostgreSQL-derived SQL parser DuckDB team motherduck MotherDuck connectivity Third party md mysql MySQL database re... - https://man.mtool.work/duckdb/2.0/core_extensions/overview.html
- Configuration 8030
- DuckDB has a number of configuration options that can be used to change the behavior of the system. The configuration options can be set using either the SET statement or the PRAGMA statement . They can be reset to their original values usi
...HAR undecided allow_extensions_metadata_mismatch Allow to load extensions with no compatible metadata. BOOLEAN false allow_parser_override_extension Allow extensions to override the current parser. VARCHAR DEFAULT allow_persistent_secrets Allow the cre...ction_invalidation_policy When to invalidate transactions when errors occur. SYNTACTIC_ERRORS_DO_NOT_INVALIDATE means that parser and binder exceptions do not invalidate. ALL _ERRORS_INVALIDATE_TRANSACTION means all errors invalidate a transaction. VAR...ion time per query in milliseconds (0 = no limit). BIGINT 0 max_expression_depth The maximum expression depth limit in the parser. WARNING: increasing this setting and using very deep expressions might lead to stack overflow errors. UBIGINT 1000 max_me... - https://man.mtool.work/duckdb/2.0/configuration/overview.html
- SQL to/from JSON 7996
- DuckDB provides functions to serialize and deserialize SELECT statements between SQL and JSON, as well as executing JSON serialized statements. Function Type Description json_deserialize_sql(json) Scalar Deserialize one or many json seriali
...HANDLING"}}]} Example with a syntax error: SELECT json_serialize_sql('TOTALLY NOT VALID SQL'); {"error":true,"error_type":"parser","error_message":"syntax error at or near \"VALID\"","location":"[12,5]","position":"12","error_subtype":"SYNTAX_ERROR"} E...CT 1 + 2')); 3 Example with error: SELECT * FROM json_execute_serialized_sql(json_serialize_sql('TOTALLY NOT VALID SQL')); Parser Error: Error parsing json: parser: syntax error at or near "VALID" Serializing the bound logical plan of a statement with... - https://man.mtool.work/duckdb/2.0/data/json/sql_to_and_from_json.html
- Metrics 7945
- DuckDB provides a set of metrics that can be used to monitor the performance and health of the database. Metrics are named ⟨group⟩.⟨metric⟩ , e.g., query.total_time or operator.timing . The set of collected metrics is controlled with the tr
...ble_metrics(); All Metrics The metrics are organized into the following groups: query system io storage operator optimizer parser planner physical_planner query Metrics Metrics measured over the entire query. Name Type Unit Description query.cpu_time d..._simplification , optimizer.row_number_rewriter , optimizer.partitioned_execution , optimizer.partial_aggregate_pushdown . parser Metrics Metrics on parsing the SQL query. Name Type Unit Description parser.total_time double seconds Time spent parsing t... - https://man.mtool.work/duckdb/2.0/dev/metrics.html
DuckDB 2.0 Documentation / man.mtool.work