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Samples – DuckDB 11228: This page is for DuckDB 1.3, which is outdated. Switch to the current version . Search Shortcut cmd + k | ctrl + k Installation Documentation Getting Started Connect Overview Concurrency Data Import Overview Data Sources CSV Files Overview ... s included in the sample with that probability. If your table contains fewer than ~10k rows, it makes sense to specify the bernoulli sampling option instead, which applies the probability to each row independently. Even then, you'll sometimes get more and ... rows (up to rounding), you must use the reservoir sampling option. Select a sample of approximately 10% of the table using bernoulli sampling: SELECT * FROM tbl USING SAMPLE 10 PERCENT ( bernoulli ); Select a sample of exactly 10% (up to rounding) of the ... f data that needs to pass through the query engine. DuckDB supports three different types of sampling methods: reservoir , bernoulli and system . By default, DuckDB uses reservoir sampling when an exact number of rows is sampled, and system sampling when ...; https://man.mtool.work/duckdb/1.3/sql/samples.html

SAMPLE Clause – DuckDB 7485: This page is for DuckDB 1.3, which is outdated. Switch to the current version . Search Shortcut cmd + k | ctrl + k Installation Documentation Getting Started Connect Overview Concurrency Data Import Overview Data Sources CSV Files Overview ... g default (system) sampling: SELECT * FROM addresses USING SAMPLE 1 % ; Select a sample of 1% of the addresses table using bernoulli sampling: SELECT * FROM addresses USING SAMPLE 1 % ( bernoulli ); Select a sample of 10 rows from the subquery: SELECT * F ... * FROM addresses ) USING SAMPLE 10 ROWS ; Syntax 関連キーワード sample addresses clause table Syntax after using sampling bernoulli Documentation Query Copy Markdown Clause allows query base significantly speed up processing queries expense accuracy Samp ...; https://man.mtool.work/duckdb/1.3/sql/query_syntax/sample.html

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