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- TPC-H Extension – DuckDB 12943
- This page is for DuckDB 1.3, which is outdated.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
...eters The data generator function dbgen has the following parameters: Name Type Description catalog VARCHAR Target catalog children UINTEGER Number of partitions overwrite BOOLEAN (Not used) sf DOUBLE Scale factor step UINTEGER Defines the partition to b...e generated, indexed from 0 to children - 1. Must be defined when the children arguments is defined suffix VARCHAR Append the suffix to table names Pre-Generated...ailable, you can run the dbgen function in steps. For example, you may generate SF300 in 10 steps: CALL dbgen ( sf = 300 , children = 10 , step = 0 ); CALL dbgen ( sf = 300 , children = 10 , step = 1 ); ... CALL dbgen ( sf = 300 , children = 10 , step =... - https://man.mtool.work/duckdb/1.3/core_extensions/tpch.html
- Profiling – DuckDB 10869
- This page is for DuckDB 1.3, which is outdated.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
...ss all operators in the query. The OPERATOR nodes represent the sum of the operator's specific metric and those of all its children recursively. These cumulative metrics can be enabled independently, even if the underlying specific metrics are disabled....{ "extra_info" : {}, "query_name" : "SELECT name \n FROM students \n JOIN exams USING (sid) \n WHERE name LIKE 'Ma%';" , "children" : [ { "operator_timing" : 0.000001 , "operator_cardinality" : 2 , "operator_type" : "PROJECTION" , "extra_info" : { "Proj...ections" : "name" , "Estimated Cardinality" : "1" }, "children" : [ { "extra_info" : { "Join Type" : "INNER" , "Conditions" : "sid = sid" , "Build Min" : "1" , "Build Max" : "3" , "Esti... - https://man.mtool.work/duckdb/1.3/dev/profiling.html
- SQL to/from JSON – DuckDB 10726
- This page is for DuckDB 1.3, which is outdated.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
...{"node":{"type":"SELECT_NODE","select_list":[{"class":"FUNCTION","type":"FUNCTION","query_location":9,"function_name":"+","children":[{"class":"CONSTANT","type":"VALUE_CONSTANT","query_location":7,"value":{"type":{"id":"INTEGER"},"is_null":false,"value":..."node":{"type":"SELECT_NODE","select_list":[{"class":"FUNCTION","type":"FUNCTION","query_location":23,"function_name":"+","children":[{"class":"COLUMN_REF","type":"COLUMN_REF","query_location":21,"column_names":["a"]},{"class":"COLUMN_REF","type":"COLUMN...{"node":{"type":"SELECT_NODE","select_list":[{"class":"FUNCTION","type":"FUNCTION","query_location":9,"function_name":"+","children":[{"class":"CONSTANT","type":"VALUE_CONSTANT","query_location":7,"value":{"type":{"id":"INTEGER"},"is_null":false,"value":... - https://man.mtool.work/duckdb/1.3/data/json/sql_to_and_from_json.html
- Types – DuckDB 8080
- 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
...of the map type. Must be destroyed with duckdb_destroy_logical_type . duckdb_struct_type_child_count Returns the number of children of a struct type. Syntax idx_t duckdb_struct_type_child_count ( duckdb_logical_type type ); Parameters type : The logical...type object Return Value The number of children of a struct type. duckdb_struct_type_child_name Retrieves the name of the struct child. The result must be freed with duck... - https://man.mtool.work/duckdb/1.3/clients/c/types.html
- Querying Parquet Metadata – DuckDB 8080
- 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
...by parquet_schema . Field Type file_name VARCHAR name VARCHAR type VARCHAR type_length VARCHAR repetition_type VARCHAR num_children BIGINT converted_type VARCHAR scale BIGINT precision BIGINT field_id BIGINT logical_type VARCHAR Parquet File Metadata The... - https://man.mtool.work/duckdb/1.3/data/parquet/metadata.html
- Typecasting – DuckDB 7937
- 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
...ation. Lists / Arrays Lists can be explicitly cast to other lists using the same casting rules. The cast is applied to the children of the list. For example, if we convert an INTEGER[] list to a VARCHAR[] list, the child INTEGER elements are individually... - https://man.mtool.work/duckdb/1.3/sql/data_types/typecasting.html
- Conversion between DuckDB and Python – DuckDB 7794
- 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
...bject of type BITSTRING , it maps to BITSTRING instead. list list becomes a LIST type of the “most permissive” type of its children, for example: my_list_value = [ 12345 , "test" ] Will become VARCHAR[] because 12345 can convert to VARCHAR but test can n... - https://man.mtool.work/duckdb/1.3/clients/python/conversion.html
- Vectors – DuckDB 7669
- 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
...tor. typedef struct { uint64_t offset ; uint64_t length ; } duckdb_list_entry ; Note that both list entries itself and any children stored in the lists can also be NULL . This must be checked using the validity mask again. Arrays Arrays are nested types... - https://man.mtool.work/duckdb/1.3/clients/c/vector.html
- COPY Statement – DuckDB 7669
- 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
...ield_id : 42 , element : 43 }}); Sets the field_id of column my_map to 42, and columns key and value (default names of map children) to 43 and 44: COPY ( SELECT MAP { 'key1' : 128 , 'key2' : 256 } my_map ) TO 'my.parquet' ( FIELD_IDS { my_map : { __duckd... - https://man.mtool.work/duckdb/1.3/sql/statements/copy.html
- Complete API – DuckDB 7526
- 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
...of the map type. Must be destroyed with duckdb_destroy_logical_type . duckdb_struct_type_child_count Returns the number of children of a struct type. Syntax idx_t duckdb_struct_type_child_count ( duckdb_logical_type type ); Parameters type : The logical...type object Return Value The number of children of a struct type. duckdb_struct_type_child_name Retrieves the name of the struct child. The result must be freed with duck... - https://man.mtool.work/duckdb/1.3/clients/c/api.html
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