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COPY Statement – DuckDB 12740: This page is for DuckDB 1.3, which is outdated.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 ... at Pivot Sitemap Live Demo Documentation / SQL / Statements Copy Markdown COPY Statement Examples Read a CSV file into the lineitem table, using auto-detected CSV options: COPY lineitem FROM 'lineitem.csv' ; Read a CSV file into the lineitem table, using ... manually specified CSV options: COPY lineitem FROM 'lineitem.csv' ( DELIMITER '|' ); Read a Parquet file into the lineitem table: COPY lineitem FROM 'lineitem.pq' ( FOR ... MAT parquet ); Read a JSON file into the lineitem table, using auto-detected options: COPY lineitem FROM 'lineitem.json' ( FORMAT json , AUTO_DETECT true ); Read a CSV file ...; https://man.mtool.work/duckdb/1.3/sql/statements/copy.html

Iceberg Extension – DuckDB 10272: This page is for DuckDB 1.3, which is outdated.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 ... sions are converted to metadata file names Querying Individual Tables SELECT count ( * ) FROM iceberg_scan ( 'data/iceberg/lineitem_iceberg' , allow_moved_paths = true ); count_star() 51793 The allow_moved_paths option ensures that some path resolution i ... ifest version is a UUID. To do so, navigate to the data/iceberg directory and run: SELECT count ( * ) FROM iceberg_scan ( 'lineitem_iceberg/metadata/v1.metadata.json' ); count_star() 60175 The iceberg works together with the httpfs extension or the azure ... Iceberg tables in object stores such as S3 or Azure Blob Storage. SELECT count ( * ) FROM iceberg_scan ( 's3://bucketname/lineitem_iceberg/metadata/v1.metadata.json' ); Access Iceberg Metadata To access Iceberg Metadata, you can use the iceberg_metadata ...; https://man.mtool.work/duckdb/1.3/core_extensions/iceberg/overview.html

Summarize – DuckDB 8225: This page is for DuckDB 1.3, which is outdated.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 ... arize a query, prepend SUMMARIZE to a query. SUMMARIZE SELECT * FROM tbl ; Example Below is an example of SUMMARIZE on the lineitem table of TPC-H SF1 table, generated using the tpch extension . INSTALL tpch ; LOAD tpch ; CALL dbgen ( sf = 1 ); SUMMARIZE ... lineitem ; column_name column_type min max approx_unique avg std q25 q50 q75 count null_percentage l_orderkey INTEGER 1 6000000 150 ... e column query summarize example tpch command used number aggregates over approx unique count type percentage values order lineitem using extension summary Documentation Guides Meta 関連するページ query and query_table Functions SUMMARIZE Statement INSER ...; https://man.mtool.work/duckdb/1.3/guides/meta/summarize.html

Reading and Writing Parquet Files – DuckDB 7933: 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 ... e the page size of Parquet file's dictionary pages, use the STRING_DICTIONARY_PAGE_SIZE_LIMIT option (default: 1 MB): COPY lineitem TO 'lineitem-with-custom-dictionary-size.parquet' ( FORMAT parquet , STRING_DICTIONARY_PAGE_SIZE_LIMIT 100_000 ); DuckDB's ...; https://man.mtool.work/duckdb/1.3/data/parquet/overview.html

Parquet Encryption – DuckDB 7823: 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 ... d Performance Implications Note that encryption has some performance implications. Without encryption, reading/writing the lineitem table from TPC-H at SF1, which is 6M rows and 15 columns, from/to a Parquet file takes 0.26 and 0.99 seconds, respectively ...; https://man.mtool.work/duckdb/1.3/data/parquet/encryption.html

TPC-H Extension – DuckDB 7787: 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. To clean up existing tables, use DROP TABLE before running dbgen : DROP TABLE IF EXISTS customer ; DROP TABLE IF EXISTS lineitem ; DROP TABLE IF EXISTS nation ; DROP TABLE IF EXISTS orders ; DROP TABLE IF EXISTS part ; DROP TABLE IF EXISTS partsupp ; ...; https://man.mtool.work/duckdb/1.3/core_extensions/tpch.html

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