slice.chMDB {TKCat}

Subset a chMDB object according to row position in one table and return a memoMDB

Description

Subset a chMDB object according to row position in one table and return a memoMDB

Usage

## S3 method for class 'chMDB'
slice(.data, ..., by = 10^5, .preserve = FALSE)

Arguments

.data

a chMDB object

...

a single argument. The name of this argument should be a table name of x and the value of this argument should be vector of integers corresponding to row indexes.

by

the size of the batch: number of records to slice together (default: 10^5)

.preserve

not used

Value

a memoMDB object