Results of 1 - 9 of about 9 for rewrite (0.002 sec.)
- Iceberg Functions 13481
- The iceberg extension provides the following functions: Function Description iceberg_scan(source) Reads an Iceberg table from a path. iceberg_metadata(source) Returns the manifest entries of an Iceberg table. iceberg_snapshots(source) Retur
...ified schema. iceberg_rollback_to_snapshot(table, snapshot_id) Rolls back an Iceberg table to an earlier snapshot. iceberg_rewrite_data_files(table) Compacts the data files of an Iceberg table. iceberg_to_ducklake(iceberg_catalog, ducklake_catalog) Copi...ot_id and the new current_snapshot_id . CALL iceberg_rollback_to_snapshot('my_datalake.default.t', ⟨snapshot_id⟩); iceberg_rewrite_data_files The iceberg_rewrite_data_files(table) function compacts the data files of a table in an attached Iceberg catalo...g: it rewrites small (and overly large) data files into files close to the target file size, applying any pending position and equality... - https://man.mtool.work/duckdb/2.0/core_extensions/iceberg/iceberg_functions.html
- Indexes 10497
- Index Types DuckDB has two built-in index types. Indexes can also be defined via extensions . Min-Max Index (Zonemap) A min-max index (also known as zonemap or block range index) is automatically created for columns of all general-purpose d
...annot be updated in place are transformed into a DELETE of the original row followed by an INSERT of the updated row. This rewrite has performance implications, particularly for wide tables, as entire rows are rewritten instead of only the affected colu...dard vector size, which is 2048 by default. The UPDATE statement is rewritten into a DELETE , followed by an INSERT . This rewrite happens per chunk of data (2048 rows) moving through DuckDB's processing pipeline. When updating i = 2047 to i = 2048 , we...is an UPDATE on a composite payload column (e.g., a LIST or a STRUCT ), the corresponding PRIMARY KEY table, which DuckDB rewrites into a DELETE followed by an INSERT . The to-be-deleted row exists in the foreign key table. If these hold, you'll encoun... - https://man.mtool.work/duckdb/2.0/sql/indexes.html
- Go Client 8933
- The latest stable release of the DuckDB Go client bundles DuckDB 2.0.0. Its own version tag encodes that DuckDB version; see Versioning below. The DuckDB Go client, duckdb-go , is a SQL driver that conforms to Go's built-in database/sql int
...ithub.com/marcboeker/go-duckdb to github.com/duckdb/duckdb-go with v2.5.0. To migrate a project, update the dependency and rewrite the import paths with gofmt : # Update the dependency. go get github.com/duckdb/duckdb-go/v2@v2.20000.0 # Rewrite the impo... - https://man.mtool.work/duckdb/2.0/clients/go/overview.html
- Pivot Internals 8358
- PIVOT Pivoting is implemented as a combination of SQL query re-writing and a dedicated PhysicalPivot operator for higher performance. Each PIVOT is implemented as set of aggregations into lists and then the dedicated PhysicalPivot operator
...result: country name 2000 2010 2020 NL Amsterdam 1005 1065 1158 US Seattle 564 608 738 US New York City 8015 8175 8772 The rewrite into list-based aggregations shown above is used only when the number of distinct pivot values exceeds the pivot_filter_th...ise pivot_filter_threshold to trade off time against memory usage. UNPIVOT Internals Unpivoting is implemented entirely as rewrites into SQL queries. Each UNPIVOT is implemented as set of unnest functions, operating on a list of the column names and a l... - https://man.mtool.work/duckdb/2.0/internals/pivot.html
- Crashes 8214
- DuckDB is thoroughly tested via an extensive test suite. However, bugs can still occur and these can sometimes lead to crashes. This page contains practical information on how to troubleshoot DuckDB crashes. Types of Crashes There are a few
...feature. For example, if you have a query that targets a dataset in an AWS S3 bucket and performs two joins on it, try to rewrite it as a series of smaller steps as follows. Download the dataset's files manually and load them into DuckDB. Then perform... - https://man.mtool.work/duckdb/2.0/guides/troubleshooting/crashes.html
- SQLite Extension 8070
- The SQLite extension allows DuckDB to directly read and write data from a SQLite database file. The data can be queried directly from the underlying SQLite tables. Data can be loaded from SQLite tables into DuckDB tables, or vice versa. Ins
...to switch over to the new ATTACH syntax . Compatibility The SQLite extension can read databases written by Turso , a Rust rewrite of SQLite.... - https://man.mtool.work/duckdb/2.0/core_extensions/sqlite.html
- Subqueries 8070
- Subqueries are parenthesized query expressions that appear as part of a larger, outer query. Subqueries are usually based on SELECT ... FROM , but in DuckDB other query constructs such as PIVOT can also appear as a subquery. Scalar Subquery
...1 Jane DuckDB automatically detects when a NOT EXISTS query expresses an antijoin operation. There is no need to manually rewrite such queries to use LEFT OUTER JOIN ... WHERE ... IS NULL . IN Operator The IN operator checks containment of the left exp... - https://man.mtool.work/duckdb/2.0/sql/expressions/subqueries.html
- Configuration 7657
- 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
...ALIDATE_TRANSACTION means all errors invalidate a transaction. VARCHAR ALL_ERRORS_INVALIDATE_TRANSACTION delim_join_as_cte Rewrite delim joins to materialized CTEs during dependent join flattening. BOOLEAN true dialect_compatibility_mode Enable SQL dial... - https://man.mtool.work/duckdb/2.0/configuration/overview.html
- List Functions 7513
- Function Description list[index] Extracts a single list element using a (1-based) index . list[begin[:end][:step]] Extracts a sublist using slice conventions . Negative values are accepted. list1 && list2 Alias for list_has_any . list1 <->
...[[1, 2], [NULL], [2, 10, 3]], 'last'); [2, 10, 3] SELECT list_aggregate([2, 4, 8, 42], 'string_agg', '|'); 2|4|8|42 list_* Rewrite Functions The following is a list of existing rewrites. Rewrites simplify the use of the list aggregate function by only t... - https://man.mtool.work/duckdb/2.0/sql/functions/list.html
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