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Map Functions – DuckDB 15453
This page is for DuckDB 1.3, which is outdated.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 ... in the map. The type of the key provided in the second parameter must match the type of the map's keys; else, an error is thrown. map_concat(maps...) Returns a map created from merging the input maps . On key collision the value is taken from the last ... in the map. The type of the key provided in the second parameter must match the type of the map's keys; else, an error is thrown. map_extract_value(map, key) Returns the value for a given key or NULL if the key is not contained in the map. The type of ... the key provided in the second parameter must match the type of the map's keys; else, an error is thrown. map_from_entries(STRUCT(k, v)[]) Returns a map created from the entries of the array. map_keys(map) Return a list of all ...
https://man.mtool.work/duckdb/1.3/sql/functions/map.html
Python Function API – DuckDB 9579
This page is for DuckDB 1.3, which is outdated.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 ... ior for NULL values by setting null_handling = 'special' . exception_handling (optional): By default, when an exception is thrown from the Python function, it will be re-thrown in Python. Users can disable this behavior, and instead return NULL , by se ... "SELECT return_str_or_none('')" ). fetchall () print ( res ) [(None,)] Exception Handling By default, when an exception is thrown from the Python function, we'll forward (re-throw) the exception. If you want to disable this behavior, and instead return ...
https://man.mtool.work/duckdb/1.3/clients/python/function.html
Bitstring Functions – DuckDB 9186
This page is for DuckDB 1.3, which is outdated.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 ... h distinct position defined in arg . All positions must be within the range [ min , max ] or an Out of Range Error will be thrown. bit_and(arg) Description Returns the bitwise AND operation performed on all bitstrings in a given expression. Example bit ... h distinct position defined in arg . All positions must be within the range [ min , max ] or an Out of Range Error will be thrown. Example bitstring_agg(A, 1, 42) 関連キーワード bitstring length Description Example bits first bitwise Bitwise number pos ...
https://man.mtool.work/duckdb/1.3/sql/functions/bitstring.html
Troubleshooting – DuckDB 8366
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 ... SHOW ALL TABLES ; Failed to query https://s3tables.us-east-2.amazonaws.com/iceberg/v1/arn:aws:s3tables:... http error 403 thrown. Message: {"message":"The security token included in the request is invalid."} Solution Use the duckdb_secrets() function ...
https://man.mtool.work/duckdb/1.3/core_extensions/iceberg/troubleshooting.html
Utility Functions – DuckDB 8366
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 ... The file content is first validated to be valid UTF-8. If read_text attempts to read a file with invalid UTF-8 an error is thrown suggesting to use read_blob instead. See the read_text guide for more details. sha1(string) Returns a VARCHAR with the SHA ... The file content is first validated to be valid UTF-8. If read_text attempts to read a file with invalid UTF-8 an error is thrown suggesting to use read_blob instead. See the read_text guide for more details. Example read_text('hello.txt') Result hello ...
https://man.mtool.work/duckdb/1.3/sql/functions/utility.html
Parquet Encryption – DuckDB 8162
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 ... column_keys : { key256 : [ 'col0' , 'col1' ]} }); However, this is unsupported at the moment and will cause an error to be thrown (for now): Not implemented Error: Parquet encryption_config column_keys not yet implemented Performance Implications Note ...
https://man.mtool.work/duckdb/1.3/data/parquet/encryption.html
Directly Reading Files – DuckDB 8162
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 ... he file content is first validated to be valid UTF-8. If read_text attempts to read a file with invalid UTF-8, an error is thrown suggesting to use read_blob instead. read_blob The read_blob table function reads from the selected source(s) to a BLOB : ...
https://man.mtool.work/duckdb/1.3/guides/file_formats/read_file.html
Export to Apache Arrow – DuckDB 8162
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 ... ELECT * FROM my_arrow_table" ). fetch_record_batch ( chunk_size ) # Loop through the results. A StopIteration exception is thrown when the RecordBatchReader is empty while True : try : # Process a single chunk here (just printing as an example) print ( ...
https://man.mtool.work/duckdb/1.3/guides/python/export_arrow.html
Casting – DuckDB 8162
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 ... not be successfully performed. For example, trying to cast the string 'hello' to an INTEGER will result in an error being thrown. SELECT CAST ( 'hello' AS INTEGER ); Conversion Error: Could not convert string 'hello' to INT32 The exact behavior of the ...
https://man.mtool.work/duckdb/1.3/sql/expressions/cast.html
IN Operator – DuckDB 8162
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 ... LECT 42 IN ( SELECT unnest ([ 32 , 42 , 52 ]) AS x ); true If the subquery returns more than one column, a Binder Error is thrown: SELECT 42 IN ( SELECT unnest ([ 32 , 42 , 52 ]) AS x , 'a' AS y ); Binder Error: Subquery returns 2 columns - expected 1 ...
https://man.mtool.work/duckdb/1.3/sql/expressions/in.html
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