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- Types – DuckDB 13481
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...cal_type key_type , duckdb_logical_type value_type ); duckdb_logical_type duckdb_create_union_type ( duckdb_logical_type * member_types , const char ** member_names , idx_t member_count ); duckdb_logical_type duckdb_create_struct_type ( duckdb_logical_...type * member_types , const char ** member_names , idx_t member_count ); duckdb_logical_type duckdb_create_enum_type ( const char ** mem...ber_names , idx_t member_count ); duckdb_logical_type duckdb_create_decimal_type ( uint8_t width , uint8_t scale ); duckdb_type duckdb_get_type_id... - https://man.mtool.work/duckdb/1.3/clients/c/types.html
- Complete API – DuckDB 10173
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...cal_type key_type , duckdb_logical_type value_type ); duckdb_logical_type duckdb_create_union_type ( duckdb_logical_type * member_types , const char ** member_names , idx_t member_count ); duckdb_logical_type duckdb_create_struct_type ( duckdb_logical_...type * member_types , const char ** member_names , idx_t member_count ); duckdb_logical_type duckdb_create_enum_type ( const char ** mem...ber_names , idx_t member_count ); duckdb_logical_type duckdb_create_decimal_type ( uint8_t width , uint8_t scale ); duckdb_type duckdb_get_type_id... - https://man.mtool.work/duckdb/1.3/clients/c/api.html
- Union Type – DuckDB 9526
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...d::variant , Rust's Enum or the “sum type” present in most functional languages. UNION types must always have at least one member, and while they can contain multiple members of the same type, the tag names must be unique. UNION types can have at most...256 members. Under the hood, UNION types are implemented on top of STRUCT types, and simply keep the “tag” as the first entry. UNION...values can be created with the union_value(tag := expr) function or by casting from a member type . Example Create a table with a UNION column: CREATE TABLE tbl1 ( u UNION ( num INTEGER , str VARCHAR )); INSERT INTO... - https://man.mtool.work/duckdb/1.3/sql/data_types/union.html
- Union Functions – DuckDB 8448
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...lue with the named tags from the union. NULL if the tag is not currently selected. union_value(tag := any) Create a single member UNION containing the argument value. The tag of the value will be the bound variable name. union_tag(union) Retrieve the c...is not currently selected. Example union_extract(s, 'k') Result hello union_value(tag := any) Description Create a single member UNION containing the argument value. The tag of the value will be the bound variable name. Example union_value(k := 'hello...nion Description extract currently selected Example hello Functions notation serves alias Extract named tags Create single member containing argument bound variable Retrieve Enum Documentation Copy 関連するページ Struct Functions Union Type Avro Extens... - https://man.mtool.work/duckdb/1.3/sql/functions/union.html
- Map Type – DuckDB 8250
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...comparison rules: comparing a NULL nested value to a non- NULL nested value produces a NULL result. Comparing nested value members , however, uses the internal nested value rules for NULL s, and a NULL nested value member will compare above a non- NULL...nested value member. Functions See Map Functions . 関連キーワード values keys nested type types list comparison also using extract ordered nee...d single Keys bracket Maps entries contained used compare rules member Functions Documentation Types 関連するページ Data Types Map Functions Struct Data Type Nested Functions Array Type List Ty... - https://man.mtool.work/duckdb/1.3/sql/data_types/map.html
- Data Types – DuckDB 7962
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...of them in each value at a time. A union also contains a discriminator “tag” value to inspect and access the currently set member type. Rows may be set to different member types of the union. union_value(num := 2) UNION(num INTEGER, text VARCHAR) Rules... - https://man.mtool.work/duckdb/1.3/sql/data_types/overview.html
- Pattern Matching – DuckDB 7693
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...s an abbreviated definition of a set of strings (a regular set). A string is said to match a regular expression if it is a member of the regular set described by the regular expression. As with LIKE , pattern characters match string characters exactly... - https://man.mtool.work/duckdb/1.3/sql/functions/pattern_matching.html
- Conversion between DuckDB and Python – DuckDB 7639
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...rror: Type VARCHAR can't be cast as UNION(u1 VARCHAR[], u2 BIGINT[]). VARCHAR can't be implicitly cast to any of the union member types: VARCHAR[], BIGINT[] The names of the fields matter and the two lists need to have the same size. Otherwise we'll tr... - https://man.mtool.work/duckdb/1.3/clients/python/conversion.html
- Struct Data Type – DuckDB 7639
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...( y INTEGER ) AS b FROM ( SELECT { 'x' : 42 } AS a ); Binder Error: STRUCT to STRUCT cast must have at least one matching member A workaround for this is to use struct_pack instead: SELECT struct_pack ( y : = a.x ) AS b FROM ( SELECT { 'x' : 42 } AS a... - https://man.mtool.work/duckdb/1.3/sql/data_types/struct.html
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