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S3 API Support – DuckDB 9369
This page is for DuckDB 1.3, which is outdated.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 ... gictest Introduction Writing Tests Debugging Result Verification Persistent Testing Loops Multiple Connections Catch Internals Overview Storage Versions and Format Execution Format Pivot Sitemap Live Demo Documentation / Core Extensions / httpfs (HTT ... with AWS S3 , Minio , Google Cloud , and lakeFS . Other services that implement the S3 API (such as Cloudflare R2 ) should also work, but not all features may be supported. The following table shows which parts of the S3 API are required for each htt ... , PROVIDER credential_chain ); Again, to query a file using the above secret, simply query any s3:// prefixed file. DuckDB also allows specifying a specific chain using the CHAIN keyword. This takes a semicolon-separated list ( a;b;c ) of providers t ...
https://man.mtool.work/duckdb/1.3/core_extensions/httpfs/s3api.html
Vector Similarity Search Extension – DuckDB 9036
This page is for DuckDB 1.3, which is outdated.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 ... gictest Introduction Writing Tests Debugging Result Verification Persistent Testing Loops Multiple Connections Catch Internals Overview Storage Versions and Format Execution Format Pivot Sitemap Live Demo Documentation / Core Extensions Copy Markdown ... RDER BY array_distance ( vec , [ 1 , 2 , 3 ]:: FLOAT [ 3 ]) LIMIT 3 ; Additionally, the overloaded min_by(col, arg, n) can also be accelerated with the HNSW index if the arg argument is a matching distance metric function. This can be used to do quic ... ou can create multiple HNSW indexes on the same table each individually indexing a different column. Additionally, you can also create multiple HNSW indexes to the same column, each supporting a different distance metric. Index Options Besides the me ...
https://man.mtool.work/duckdb/1.3/core_extensions/vss.html
Star Expression – DuckDB 8478
This page is for DuckDB 1.3, which is outdated.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 ... gictest Introduction Writing Tests Debugging Result Verification Persistent Testing Loops Multiple Connections Catch Internals Overview Storage Versions and Format Execution Format Pivot Sitemap Live Demo Documentation / SQL / Expressions Copy Markdo ... from that table. SELECT table_name . * FROM table_name JOIN other_table_name USING ( id ); Similarly, the * expression can also be used to retrieve all keys from a struct as separate columns. This is particularly useful when a prior operation creates ... count ( COLUMNS ( * EXCLUDE ( number ))) FROM numbers ; id min(number := (number + id)) id 1 11 3 COLUMNS expressions can also be combined, as long as they contain the same star expression: SELECT COLUMNS ( * ) + COLUMNS ( * ) FROM numbers ; id numb ...
https://man.mtool.work/duckdb/1.3/sql/expressions/star.html
Excel Export – DuckDB 8145
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 ... gictest Introduction Writing Tests Debugging Result Verification Persistent Testing Loops Multiple Connections Catch Internals Overview Storage Versions and Format Execution Format Pivot Sitemap Live Demo Documentation / Guides / File Formats Copy Ma ... the COPY statement with the FORMAT xlsx option: COPY tbl TO 'output.xlsx' WITH ( FORMAT xlsx ); The result of a query can also be directly exported to an Excel file: COPY ( SELECT * FROM tbl ) TO 'output.xlsx' WITH ( FORMAT xlsx ); Or: COPY ( SELECT ... pear as TRUE and FALSE in Excel. All other types are cast to VARCHAR and then written as text cells. But you can of course also explicitly cast columns to a different type before exporting them to Excel: COPY ( SELECT CAST ( a AS VARCHAR ), b FROM tb ...
https://man.mtool.work/duckdb/1.3/guides/file_formats/excel_export.html
Analyzing a Git Repository – DuckDB 8027
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 ... gictest Introduction Writing Tests Debugging Result Verification Persistent Testing Loops Multiple Connections Catch Internals Overview Storage Versions and Format Execution Format Pivot Sitemap Live Demo Documentation / Guides / Snippets Copy Markdo ... > git-log.csv The resulting file looks like this: 2025-02-25T18:12:54+01:00?d608a31e13?Mark?MAIN_BRANCH_VERSIONING: Adopt also for Python build and amalgamation (#16400) 2025-02-25T15:05:56+01:00?920b39ad96?Mark?Read support for Parquet Float16 (#16 ... 395) 2025-02-25T13:43:52+01:00?61f55734b9?Carlo Piovesan?MAIN_BRANCH_VERSIONING: Adopt also for Python build and amalgamation 2025-02-25T12:35:28+01:00?87eff7ebd3?Mark?Fix issue #16377 (#16391) 2025-02-25T10:33:49+ ...
https://man.mtool.work/duckdb/1.3/guides/snippets/analyze_git_repository.html
Python DB API – DuckDB 7695
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 ... gictest Introduction Writing Tests Debugging Result Verification Persistent Testing Loops Multiple Connections Catch Internals Overview Storage Versions and Format Execution Format Pivot Sitemap Live Demo Documentation / Client APIs / Python Copy Mar ... disk (i.e., all data is lost when you exit the Python process). Named In-memory Connections The special value :memory: can also be postfixed with a name, for example: :memory:conn3 . When a name is provided, subsequent duckdb.connect calls will creat ... fault we create an (unnamed) in-memory-database that lives inside the duckdb module. Every method of DuckDBPyConnection is also available on the duckdb module, this connection is what's used by these methods. The special value :default: can be used t ...
https://man.mtool.work/duckdb/1.3/clients/python/dbapi.html
Avro Extension – DuckDB 7695
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 ... gictest Introduction Writing Tests Debugging Result Verification Persistent Testing Loops Multiple Connections Catch Internals Overview Storage Versions and Format Execution Format Pivot Sitemap Live Demo Documentation / Core Extensions Copy Markdown ... s.duckdb.org/data/userdata1.avro' ); FROM read_avro ( 's3:// your-bucket / some_file .avro' ); should "just" work. You can also glob multiple files in a single read call or pass a list of files to the functions: FROM read_avro ( 'some_file_*.avro' ); ... n of the actual type with a special NULL type. This is different to DuckDB, where any value can be NULL . Of course DuckDB also supports UNION types, but this would be quite cumbersome to work with. This extension simplifies the Avro schema where pos ...
https://man.mtool.work/duckdb/1.3/core_extensions/avro.html
R Client – DuckDB 7587
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 ... gictest Introduction Writing Tests Debugging Result Verification Persistent Testing Loops Multiple Connections Catch Internals Overview Storage Versions and Format Execution Format Pivot Sitemap Live Demo Documentation / Client APIs Copy Markdown R C ... s <- dbGetQuery ( con , "SELECT * FROM items" ) print ( res ) # item value count # 1 jeans 20.0 1 # 2 hammer 42.2 2 DuckDB also supports prepared statements in the R client with the dbExecute and dbGetQuery methods. Here is an example: # prepared sta ... able LIMIT 1" ) print ( res ) # Sepal.Length Sepal.Width Petal.Length Petal.Width Species # 1 5.1 3.5 1.4 0.2 setosa It is also possible to “register” a R data frame as a virtual table, comparable to a SQL VIEW . This does not actually transfer data ...
https://man.mtool.work/duckdb/1.3/clients/r.html
Loading JSON – DuckDB 7587
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 ... gictest Introduction Writing Tests Debugging Result Verification Persistent Testing Loops Multiple Connections Catch Internals Overview Storage Versions and Format Execution Format Pivot Sitemap Live Demo Documentation / Data Import / JSON Files Copy ... est method of loading JSON files: it automatically attempts to figure out the correct configuration of the JSON reader. It also automatically deduces types of columns. In the following example, we use the todos.json file, SELECT * FROM read_json ( 't ... used to read JSON: Function Description read_json_objects(filename) Read a JSON object from filename , where filename can also be a list of files or a glob pattern. read_ndjson_objects(filename) Alias for read_json_objects with the parameter format ...
https://man.mtool.work/duckdb/1.3/data/json/loading_json.html
DuckDB_% Metadata Functions – DuckDB 7469
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 ... gictest Introduction Writing Tests Debugging Result Verification Persistent Testing Loops Multiple Connections Catch Internals Overview Storage Versions and Format Execution Format Pivot Sitemap Live Demo Documentation / SQL / Meta Queries Copy Markd ... call it to obtain its returned resultset: SELECT * FROM duckdb_settings (); Alternatively, you may execute table functions also using the CALL -syntax: CALL duckdb_settings (); In this case too, the parentheses are mandatory. For some of the duckdb_% ... functions, there is also an identically named view available, which also resides in the main schema. Typically, these views do a SELECT on the duck ...
https://man.mtool.work/duckdb/1.3/sql/meta/duckdb_table_functions.html
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