Description Format Construction Fields Methods See Also Examples
DataBackend for data.table as an in-memory data base.
R6::R6Class object inheriting from DataBackend.
1 2 | DataBackendDataTable$new(data, primary_key = NULL)
as_data_backend(data, primary_key = NULL, ...)
|
data
:: data.table::data.table()
The input data.table::data.table()
.
primary_key
:: character(1)
Name of the primary key column.
DataBackendDataTable
does not copy the input data, while as_data_backend
calls data.table::copy()
.
as_data_backend
creates a primary key column as integer column if primary_key
is NULL.
See DataBackend.
See DataBackend.
Other DataBackend: DataBackendMatrix
,
DataBackend
, as_data_backend
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 |
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