Results of 1 - 10 of about 17 for dropped (0.002 sec.)
- DROP Statement 14414
- The DROP statement removes a catalog entry added previously with the CREATE command. Examples Delete the table with the name tbl : DROP TABLE tbl; Drop the view with the name view1 ; do not throw an error if the view does not exist: DROP VI
...le mt : DROP MACRO TABLE mt; -- the `TABLE` is optional since v1.4.0 Drop type typ : DROP TYPE typ; Syntax Dependencies of Dropped Objects DuckDB performs limited dependency tracking for some object types. By default or if the RESTRICT clause is provide...d, the entry will not be dropped if there are any other objects that depend on it. If the CASCADE clause is provided then all the objects that are dependen...t on the object will be dropped as well. CREATE SCHEMA myschema; CREATE TABLE myschema.t1 (i INTEGER); DROP SCHEMA myschema; Dependency Error: Cannot drop... - https://man.mtool.work/duckdb/2.0/sql/statements/drop.html
- CREATE SEQUENCE Statement 10604
- The CREATE SEQUENCE statement creates a new sequence number generator. Examples Generate an ascending sequence starting from 1: CREATE SEQUENCE serial; Generate sequence from a given start number: CREATE SEQUENCE serial START 101; Generate
...tedly: CREATE SEQUENCE serial START WITH 1 MAXVALUE 10 CYCLE; Creating and Dropping Sequences Sequences can be created and dropped similarly to other catalog items. Overwrite an existing sequence: CREATE OR REPLACE SEQUENCE serial; Only create sequence...escending ones. TEMPORARY or TEMP If specified, the sequence object is created only for this session, and is automatically dropped on session exit. Existing permanent sequences with the same name are not visible (in this session) while the temporary seq...exceed the range of an eight-byte integer (-9223372036854775808 to 9223372036854775807). Limitations A sequence cannot be dropped while a column DEFAULT still references it: CREATE SEQUENCE id_sequence START 1; CREATE TABLE tbl ( id INTEGER DEFAULT nex... - https://man.mtool.work/duckdb/2.0/sql/statements/create_sequence.html
- Combining Schemas 10035
- Examples Read a set of CSV files combining columns by position: SELECT * FROM read_csv('flights*.csv'); Read a set of CSV files combining columns by name: SELECT * FROM read_csv('flights*.csv', union_by_name = true); Combining Schemas When
...e provided, and then matches the columns of subsequent files to it by column name: columns missing from the first file are dropped, and columns of the first file missing from a later file cause an error. This works correctly as long as all files have th...ing these without union_by_name uses the schema of the first file, so the UniqueCarrier column of flights4.csv is silently dropped (reading them in the opposite order results in a schema mismatch error). When specifying the union_by_name option, the col... - https://man.mtool.work/duckdb/2.0/data/multiple_files/combining_schemas.html
- Import Data 9655
- Overview The Rust client offers two ways to get data into DuckDB in bulk: the high-performance Appender for inserting rows from Rust, and reading directly from data files such as Parquet, CSV, and JSON. Both are described below. Appender Th
...for a row that later fails a constraint check. Always call flush() explicitly and check its result before the appender is dropped. Dropping an appender flushes any remaining rows, but errors raised during that implicit flush are discarded, because Rust...M test", [], |row| row.get::<_, i64>(0))?; assert_eq!(count, row_count); Ok(()) } A Transaction rolls back by default when dropped. Call set_drop_behavior(DropBehavior::Commit) to commit on drop instead, or call tx.commit() explicitly. The other DropBeh... - https://man.mtool.work/duckdb/2.0/clients/rust/data_import.html
- Profile and Monitor 8707
- Overview The Rust client can observe a running or completed query: it can retrieve per-operator profiling metrics after a query runs, and interrupt a long-running query from another thread. Both are shown below. Profiling Profiling must be
...ls whichever query is currently running on the connection the handle was obtained from. If the connection has already been dropped, calling interrupt() is a no-op. Further Reading Profiling — DuckDB's query profiling output and the enable_profiling PRAG... - https://man.mtool.work/duckdb/2.0/clients/rust/profiling.html
- Connect 8138
- Overview Every DuckDB feature reachable from Rust starts with a Connection . Opening in-memory and file-backed databases, configuring a database instance with Config , opening read-only, pooling connections across threads, the crate's threa
...ble the feature in Cargo.toml with features = ["r2d2"] . Closing a Connection A Connection closes automatically when it is dropped (goes out of scope), which shuts down the underlying database. To close it explicitly and handle any error, call close() :... - https://man.mtool.work/duckdb/2.0/clients/rust/connecting.html
- CREATE TRIGGER Statement 8138
- New The CREATE TRIGGER feature was introduced in DuckDB 2.0. The CREATE TRIGGER statement registers a trigger: a set of SQL statements that run automatically in response to INSERT , UPDATE , or DELETE events on a table. Examples Record ever
...igger_name, table_name, action_timing, event_manipulation, for_each FROM duckdb_triggers(); Dropping Triggers A trigger is dropped with DROP TRIGGER . The table the trigger is attached to must be specified: For example: DROP TRIGGER trg_audit ON target;... - https://man.mtool.work/duckdb/2.0/sql/statements/create_trigger.html
- Writing to Iceberg 7948
- The DuckDB iceberg extension supports writing to Iceberg tables when an Iceberg catalog is attached. Writing to a table read directly from storage with iceberg_scan is not supported: the catalog is required to commit the new table metadata.
...ceberg and DuckDB storage. Creating Schemas and Tables Iceberg namespaces are exposed as schemas, which can be created and dropped with CREATE SCHEMA and DROP SCHEMA : CREATE SCHEMA iceberg_catalog.sales; USE iceberg_catalog.sales; Tables are created wi... - https://man.mtool.work/duckdb/2.0/core_extensions/iceberg/writing_to_iceberg.htm...
- Enum Data Type 7948
- Name Description ENUM Dictionary representing all possible string values of a column The enum type represents a dictionary data structure with all possible unique values of a column. For example, a column storing the days of the week can be
...n future releases, it is expected that any dependent columns must be removed before dropping the enum, or the enum must be dropped with the additional CASCADE parameter.... - https://man.mtool.work/duckdb/2.0/sql/data_types/enum.html
- R-Tree Indexes 7759
- The spatial extension provides support for spatial indexing through the R-tree extension index type. Why Should I Use an R-Tree Index? When working with geospatial datasets, it is very common that you want to filter rows based on their spat
...zily loaded from disk (when running DuckDB in disk-backed mode), but they are currently never unloaded unless the index is dropped. This means that if you end up scanning the entire index, the entire index will be loaded into memory and stay there for t... - https://man.mtool.work/duckdb/2.0/core_extensions/spatial/r-tree_indexes.html
DuckDB 2.0 Documentation / man.mtool.work