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- Table Functions – DuckDB 15661
- This page is for DuckDB 1.3, which is outdated.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
...er ( duckdb_table_function table_function , const char * name , duckdb_logical_type type ); void duckdb_table_function_set_extra_info ( duckdb_table_function table_function , void * extra_info , duckdb_delete_callback_t destroy ); void duckdb_table_fu...ster_table_function ( duckdb_connection con , duckdb_table_function function ); Table Function Bind void * duckdb_bind_get_extra_info ( duckdb_bind_info info ); void duckdb_bind_add_result_column ( duckdb_bind_info info , const char * name , duckdb_lo...t ); void duckdb_bind_set_error ( duckdb_bind_info info , const char * error ); Table Function Init void * duckdb_init_get_extra_info ( duckdb_init_info info ); void * duckdb_init_get_bind_data ( duckdb_init_info info ); void duckdb_init_set_init_data... - https://man.mtool.work/duckdb/1.3/clients/c/table_functions.html
- Profiling – DuckDB 10137
- This page is for DuckDB 1.3, which is outdated.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
.... Metric Return type Unit Query Operator Description BLOCKED_THREAD_TIME double seconds The total time threads are blocked EXTRA_INFO string Unique operator metrics LATENCY double seconds The total elapsed query execution time OPERATOR_CARDINALITY uin...CY in the QUERY_ROOT can be greater than the CPU_TIME . Detailed Profiling When the profiling_mode is set to detailed , an extra set of metrics are enabled, which are only available in the QUERY_ROOT node. These include OPTIMIZER , PLANNER , and PHYSI...and set the output format to json . In the first example, we enable profiling and set the output to a file. We only enable EXTRA_INFO , OPERATOR_CARDINALITY , and OPERATOR_TIMING . CREATE TABLE students ( name VARCHAR , sid INTEGER ); CREATE TABLE exa... - https://man.mtool.work/duckdb/1.3/dev/profiling.html
- Complete API – DuckDB 10056
- This page is for DuckDB 1.3, which is outdated.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
...kdb_state duckdb_execute_prepared_streaming ( duckdb_prepared_statement prepared_statement , duckdb_result * out_result ); Extract Statements idx_t duckdb_extract_statements ( duckdb_connection connection , const char * query , duckdb_extracted_statem...ents * out_extracted_statements ); duckdb_state duckdb_prepare_extracted_statement ( duckdb_connection connection , duckdb_extracted_statem...ents extracted_statements , idx_t index , duckdb_prepared_statement * out_prepared_statement ); const char * duckdb_extract_statement... - https://man.mtool.work/duckdb/1.3/clients/c/api.html
- Replacement Scans – DuckDB 10056
- 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
...erence Overview void duckdb_add_replacement_scan ( duckdb_database db , duckdb_replacement_callback_t replacement , void * extra_data , duckdb_delete_callback_t delete_callback ); void duckdb_replacement_scan_set_function_name ( duckdb_replacement_sca...atabase. Syntax void duckdb_add_replacement_scan ( duckdb_database db , duckdb_replacement_callback_t replacement , void * extra_data , duckdb_delete_callback_t delete_callback ); Parameters db : The database object to add the replacement scan to repl...acement : The replacement scan callback extra_data : Extra data that is passed back into the specified callback delete_callback : The delete callback to call on the ext... - https://man.mtool.work/duckdb/1.3/clients/c/replacement_scans.html
- Describe – DuckDB 9114
- 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
...IMARY KEY , j VARCHAR ); DESCRIBE tbl ; SHOW tbl ; -- equivalent to DESCRIBE tbl; column_name column_type null key default extra i INTEGER NO PRI NULL NULL j VARCHAR YES NULL NULL NULL Describing a Query In order to view the schema of the result of a...query, prepend DESCRIBE to a query. DESCRIBE SELECT * FROM tbl ; column_name column_type null key default extra i INTEGER YES NULL NULL NULL j VARCHAR YES NULL NULL NULL Note that there are subtle differences: compared to the result w...example: DESCRIBE TABLE 'https://blobs.duckdb.org/data/Star_Trek-Season_1.csv' ; column_name column_type null key default extra season_num BIGINT YES NULL NULL NULL episode_num BIGINT YES NULL NULL NULL aired_date DATE YES NULL NULL NULL cnt_kirk_hoo... - https://man.mtool.work/duckdb/1.3/guides/meta/describe.html
- Pragmas – DuckDB 8253
- 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
...Schema Information List all databases: PRAGMA database_list ; List all tables: PRAGMA show_tables ; List all tables, with extra information, similarly to DESCRIBE : PRAGMA show_tables_expanded ; To list all functions: PRAGMA functions ; For queries t...d query_tree_optimizer always use a default set of metrics. In the following example, the CPU_TIME metric is disabled. The EXTRA_INFO , OPERATOR_CARDINALITY , and OPERATOR_TIMING metrics are enabled. SET custom_profiling_settings = '{"CPU_TIME": "fals...e", "EXTRA_INFO": "true", "OPERATOR_CARDINALITY": "true", "OPERATOR_TIMING": "true"}' ; The profiling documentation contains an overv... - https://man.mtool.work/duckdb/1.3/configuration/pragmas.html
- Loading JSON – DuckDB 8025
- 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
...CREATE TABLE todos AS SELECT * FROM read_json ( 'todos.json' ); DESCRIBE todos ; column_name column_type null key default extra userId UBIGINT YES NULL NULL NULL id UBIGINT YES NULL NULL NULL title VARCHAR YES NULL NULL NULL completed BOOLEAN YES NUL...ip, t.json will use none). Options are none , gzip , zstd and auto_detect . VARCHAR auto_detect filename Whether or not an extra filename column should be included in the result. Since DuckDB v1.3.0, the filename column is added automatically as a vir...lse dateformat Specifies the date format to use when parsing dates. See Date Format VARCHAR iso filename Whether or not an extra filename column should be included in the result. BOOL false format Can be one of auto, unstructured, newline_delimited, a... - https://man.mtool.work/duckdb/1.3/data/json/loading_json.html
- Numeric Types – DuckDB 7798
- 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 value can consist of up to 1,262,612 digits). The minimum storage size for a VARINT is 4 bytes, every digit takes up an extra bit, rounded up to 8 (12 digits take 12 bits, rounded up to 16, becomes two extra bytes). Both negative and positive value...alid UUID. DuckDB supports generating UUIDv4 and UUIDv7 identifiers. To retrieve the version of a UUID value, use the uuid_extract_version function . UUIDv4 To generate a UUIDv4 value, use the uuid() function or it aliases the uuidv4() and gen_random_...UUIDv7 To generate a UUIDv7 value, use the uuidv7() function. To retrieve the timestamp from a UUIDv7 value, use the uuid_extract_timestamp function : SELECT uuid_extract_timestamp ( uuidv7 ()) AS ts ; ts 2025-04-19 15:51:20.07+00 Functions See Numer... - https://man.mtool.work/duckdb/1.3/sql/data_types/numeric.html
- Raspberry Pi – DuckDB 7635
- 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
...clude them in the build. For example: mkdir build cd build cmake .. \ -DCORE_EXTENSIONS = "httpfs;json;parquet" \ -DDUCKDB_EXTRA_LINK_FLAGS = "-latomic" make -j4 関連キーワード build Raspberry duckdb DuckDB install sudo cmake ninja clone json make lat... - https://man.mtool.work/duckdb/1.3/dev/building/raspberry_pi.html
- HTTP(S) Support – DuckDB 7554
- 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
...ecrets Manager : CREATE SECRET http_auth ( TYPE http , BEARER_TOKEN ' token ' ); Or: CREATE SECRET http_auth ( TYPE http , EXTRA_HTTP_HEADERS MAP { 'Authorization' : 'Bearer token ' } ); HTTP Proxy DuckDB supports HTTP proxies. You can add an HTTP pro... - https://man.mtool.work/duckdb/1.3/core_extensions/httpfs/https.html
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