Results of 1 - 3 of about 3 for enums (0.001 sec.)
- Enum Data Type 11924
- Name Description ENUM Dictionary representing all possible string values of a column The enum type represents a dictionary data structure with all possible unique values of a column. For example, a column storing the days of the week can be
...an enum holding all possible days. Enums are particularly interesting for string columns with low cardinality (i.e., fewer distinct values). This is because the co...to the string in the enum dictionary, resulting in immense savings in disk storage and faster query performance. Creating Enums You can create an enum using hardcoded values: CREATE TYPE mood AS ENUM ('sad', 'ok', 'happy'); -- This statement will fai...l since enums cannot hold NULL values: -- CREATE TYPE mood AS ENUM ('sad', NULL); -- This statement will fail since enum values must be... - https://man.mtool.work/duckdb/2.0/sql/data_types/enum.html
- Types 7980
- DuckDB is a strongly typed database system. As such, every column has a single type specified. This type is constant over the entire column. That is to say, a column that is labeled as an INTEGER column will only contain INTEGER values. Duc
...define types as arbitrary structs ( ROW(i INTEGER, j VARCHAR) ). For that reason, native DuckDB type objects are not mere enums, but a class that can potentially be nested. Types in the C API are modeled using an enum ( duckdb_type ) and a complex cl...duckdb_value functions do not support structural reading of composite types (lists or structs) or more complex types like enums or decimals. For more information about data chunks, see the documentation on data chunks . API Reference Overview duckdb_...reate_enum_type ( const char ** member_names , idx_t member_count ); Parameters member_names : The array of names that the enum should consist of. member_count : The number of elements that were specified in the array. Return Value The logical type. d... - https://man.mtool.work/duckdb/2.0/clients/c/types.html
- Vectors 7980
- Vectors represent a horizontal slice of a column. They hold a number of values of a specific type, similar to an array. Vectors are the core data representation used in DuckDB. Vectors are typically stored within data chunks . The vector an
...alue of 10500 . In order to obtain the correct decimal value, the value should be divided by the appropriate power-of-ten. Enums Enums are stored as unsigned integer values internally. The exact native type depends on the size of the enum dictionary,... - https://man.mtool.work/duckdb/2.0/clients/c/vector.html
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