experimental.preview() function

experimental.preview() limits the number of rows and tables in the stream.

Included group keys are not deterministic and depends on the order that the engine sends them.

Function type signature

(<-tables: stream[A], ?nrows: int, ?ntables: int) => stream[A] where A: Record

Parameters

nrows

Maximum number of rows per table to return. Default is 5.

ntables

Maximum number of tables to return. Default is 5.

tables

Input data. Default is piped-forward data (<-).

Examples

Preview data output

import "experimental"
import "sampledata"

sampledata.int()
    |> experimental.preview()