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Hive Partitioning – DuckDB 18916
This page is for DuckDB 1.3, which is outdated.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 ... / from JSON Caveats Multiple Files Overview Combining Schemas Parquet Files Overview Metadata Encryption Tips Partitioning Hive Partitioning Partitioned Writes Appender INSERT Statements Client APIs Overview ADBC C Overview Startup Configuration Quer ... rage Versions and Format Execution Format Pivot Sitemap Live Demo Documentation / Data Import / Partitioning Copy Markdown Hive Partitioning Examples Read data from a Hive partitioned data set: SELECT * FROM read_parquet ( 'orders/*/*/*.parquet' , hi ... ve_partitioning = true ); Write a table to a Hive partitioned data set: COPY orders TO 'orders' ( FORMAT parquet , PARTITION_BY ( year , month )); Note that the PARTITION_B ...
https://man.mtool.work/duckdb/1.3/data/partitioning/hive_partitioning.html
Partitioned Writes – DuckDB 10132
This page is for DuckDB 1.3, which is outdated.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 ... / from JSON Caveats Multiple Files Overview Combining Schemas Parquet Files Overview Metadata Encryption Tips Partitioning Hive Partitioning Partitioned Writes Appender INSERT Statements Client APIs Overview ADBC C Overview Startup Configuration Quer ... Sitemap Live Demo Documentation / Data Import / Partitioning Copy Markdown Partitioned Writes Examples Write a table to a Hive partitioned data set of Parquet files: COPY orders TO 'orders' ( FORMAT parquet , PARTITION_BY ( year , month )); Write a ... table to a Hive partitioned data set of CSV files, allowing overwrites: COPY orders TO 'orders' ( FORMAT csv , PARTITION_BY ( year , month ...
https://man.mtool.work/duckdb/1.3/data/partitioning/partitioned_writes.html
Relational API – DuckDB 8845
This page is for DuckDB 1.3, which is outdated.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 ... / from JSON Caveats Multiple Files Overview Combining Schemas Parquet Files Overview Metadata Encryption Tips Partitioning Hive Partitioning Partitioned Writes Appender INSERT Statements Client APIs Overview ADBC C Overview Startup Configuration Quer ... Optional[bool] Allow quoted NULL values. filename : Optional[bool], Optional[str] Add filename column or specify filename. hive_partitioning : Optional[bool] Enable Hive-style partitioning. union_by_name : Optional[bool] Union files by column name in ... stead of position. hive_types : Optional[Dict[str, str]] Hive types for columns. hive_types_autocast : Optional[bool] Automatically cast Hive type ...
https://man.mtool.work/duckdb/1.3/clients/python/relational_api.html
Python Client API – DuckDB 6916
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 ... / from JSON Caveats Multiple Files Overview Combining Schemas Parquet Files Overview Metadata Encryption Tips Partitioning Hive Partitioning Partitioned Writes Appender INSERT Statements Client APIs Overview ADBC C Overview Startup Configuration Quer ... DBPyConnection, file_glob: str, binary_as_string: bool = False, * , file_row_number: bool = False, filename: bool = False, hive_partitioning: bool = False, union_by_name: bool = False, compression: object = None) -> duckdb.duckdb.DuckDBPyRelation Cre ... nection, file_globs: list[str], binary_as_string: bool = False, * , file_row_number: bool = False, filename: bool = False, hive_partitioning: bool = False, union_by_name: bool = False, compression: object = None) -> duckdb.duckdb.DuckDBPyRelation Cre ...
https://man.mtool.work/duckdb/1.3/clients/python/reference/
Loading JSON – DuckDB 5955
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 ... / from JSON Caveats Multiple Files Overview Combining Schemas Parquet Files Overview Metadata Encryption Tips Partitioning Hive Partitioning Partitioned Writes Appender INSERT Statements Client APIs Overview ADBC C Overview Startup Configuration Quer ... r compatibility reasons. BOOL false format Can be one of auto , unstructured , newline_delimited and array . VARCHAR array hive_partitioning Whether or not to interpret the path as a Hive partitioned path . BOOL (auto-detected) ignore_errors Whether ... ould be included in the result. BOOL false format Can be one of auto, unstructured, newline_delimited, array VARCHAR array hive_partitioning Whether or not to interpret the path as a Hive partitioned path . BOOL false ignore_errors Whether to ignore ...
https://man.mtool.work/duckdb/1.3/data/json/loading_json.html
File Formats – DuckDB 5955
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 ... / from JSON Caveats Multiple Files Overview Combining Schemas Parquet Files Overview Metadata Encryption Tips Partitioning Hive Partitioning Partitioned Writes Appender INSERT Statements Client APIs Overview ADBC C Overview Startup Configuration Quer ... f individual Parquet files moderate. Bestpractice The ideal range is between 100 MB and 10 GB per individual Parquet file. Hive Partitioning for Filter Pushdown When querying many files with filter conditions, performance can be improved by using a H ... files, see the Parquet Tips page . Loading CSV Files CSV files are often distributed in compressed format such as GZIP archives ( .csv.gz ). DuckDB can decompress these files on the fly. In fact, this is typically faster than decompressing the files ...
https://man.mtool.work/duckdb/1.3/guides/performance/file_formats.html
S3 API Support – DuckDB 5629
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 ... / from JSON Caveats Multiple Files Overview Combining Schemas Parquet Files Overview Metadata Encryption Tips Partitioning Hive Partitioning Partitioned Writes Appender INSERT Statements Client APIs Overview ADBC C Overview Startup Configuration Quer ... : column_a column_b filename 1 examplevalue1 s3://bucket-name/file1.parquet 2 examplevalue1 s3://bucket-name/file2.parquet Hive Partitioning DuckDB also offers support for the Hive partitioning scheme , which is available when using HTTP(S) and S3 en ... er Overview of S3 Secret Parameters Platform-Specific Secret Types Reading Partial Reading Reading Multiple Files Globbing Hive Partitioning Writing Configuration ...
https://man.mtool.work/duckdb/1.3/core_extensions/httpfs/s3api.html
CSV Import – DuckDB 5092
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 ... / from JSON Caveats Multiple Files Overview Combining Schemas Parquet Files Overview Metadata Encryption Tips Partitioning Hive Partitioning Partitioned Writes Appender INSERT Statements Client APIs Overview ADBC C Overview Startup Configuration Quer ... s zero-length strings instead of NULL s. VARCHAR[] [] header First line of each file contains the column names. BOOL false hive_partitioning Interpret the path as a Hive partitioned path . BOOL (auto-detected) ignore_errors Ignore any parsing errors ...
https://man.mtool.work/duckdb/1.3/data/csv/overview.html
Reading and Writing Parquet Files – DuckDB 5092
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 ... / from JSON Caveats Multiple Files Overview Combining Schemas Parquet Files Overview Metadata Encryption Tips Partitioning Hive Partitioning Partitioned Writes Appender INSERT Statements Client APIs Overview ADBC C Overview Startup Configuration Quer ... ept for compatibility reasons. BOOL false file_row_number Whether or not to include the file_row_number column. BOOL false hive_partitioning Whether or not to interpret the path as a Hive partitioned path . BOOL (auto-detected) union_by_name Whether ...
https://man.mtool.work/duckdb/1.3/data/parquet/overview.html
Parquet Tips – DuckDB 4986
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 ... / from JSON Caveats Multiple Files Overview Combining Schemas Parquet Files Overview Metadata Encryption Tips Partitioning Hive Partitioning Partitioned Writes Appender INSERT Statements Client APIs Overview ADBC C Overview Startup Configuration Quer ... _parquet ( 'flights*.parquet' , union_by_name = true ); Tips for Writing Parquet Files Using a glob pattern upon read or a Hive partitioning structure are good ways to transparently handle multiple files. Enabling PER_THREAD_OUTPUT If the final numbe ...
https://man.mtool.work/duckdb/1.3/data/parquet/tips.html
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