Results of 1 - 5 of about 5 for accuracy (0.001 sec.)
- SAMPLE Clause 12152
- The SAMPLE clause allows you to run the query on a sample from the base table. This can significantly speed up processing of queries, at the expense of accuracy in the result. Samples can also be used to quickly see a snapshot of the data w
... - https://man.mtool.work/duckdb/2.0/sql/query_syntax/sample.html
- Command Line Client 10130
- Installation To use the DuckDB CLI client, visit the CLI installation page . The latest stable version of the DuckDB command line client is 2.0.0. Installation The DuckDB CLI (Command Line Interface) is a single, dependency-free executable.
...us Refinement: The system continuously updates predicted completion time as new progress data becomes available, improving accuracy throughout execution The Kalman filter adapts to changing execution conditions such as memory pressure, I/O bottlenecks, o...y not always decrease linearly—estimates can increase when query execution becomes less predictable. Factors Affecting The Accuracy of Query Completion ETA Completion time estimates may be less reliable under these conditions: System resource constraints... - https://man.mtool.work/duckdb/2.0/clients/cli/overview.html
- SELECT Statement 8787
- The SELECT statement retrieves rows from the database. Examples Select all columns from the table tbl : SELECT * FROM tbl; Select the rows from tbl : SELECT j FROM tbl WHERE i = 3; Perform an aggregate grouped by the column i : SELECT i, su
...to run the query on a sample from the base table. This can significantly speed up processing of queries, at the expense of accuracy in the result. Samples can also be used to quickly see a snapshot of the data when exploring a dataset. The SAMPLE clause... - https://man.mtool.work/duckdb/2.0/sql/statements/select.html
- File Formats 8107
- Handling Parquet Files DuckDB has advanced support for Parquet files, which includes directly querying Parquet files . When deciding on whether to query these files directly or to first load them to the database, you need to consider severa
...ed statistics: The DuckDB database format has the hyperloglog statistics that Parquet files do not have. These improve the accuracy of cardinality estimates, and are especially important if the queries contain a large number of join operators. Tip. If yo... - https://man.mtool.work/duckdb/2.0/guides/performance/file_formats.html
- Vector Similarity Search Extension 6765
- The vss extension is an experimental extension for DuckDB that adds indexing support to accelerate vector similarity search queries using DuckDB's new fixed-size ARRAY type. See the announcement blog post and the “What's New in the Vector S
...SET hnsw_ef_search = ⟨int⟩ configuration option at runtime. This can be useful if you want to trade search performance for accuracy or vice-versa on a per-connection basis. You can also unset the override by calling RESET hnsw_ef_search . Persistence Due... - https://man.mtool.work/duckdb/2.0/core_extensions/vss.html
PREV
1
NEXT
DuckDB 2.0 Documentation / man.mtool.work