Distinct
Drop duplicate rows, over all or the named columns.
Drops duplicate rows, comparing columns when it is non-empty and every column otherwise. Which row of a duplicate set survives is not defined — the engine partitions without an order — so do not rely on it when the other columns differ.
At a glance
Module type
Distinct
Category
Primitives · Dataframe
Default tier
reactive
Runs on
reactive, durable
Starts a flow
no
Holds a body
no
Keeps state between runs
no
Available in
every application type
Parameters
columns
string[] · required · defaults to []
The columns compared. Empty compares every column.
Inputs
on
event
no
Implicit on every module that does not itself start a flow: wire an event here to make this module the start of what that event runs.
data
dataframe
yes
The frame to work on.
Outputs
output
dataframe
dataframe, signal
One row per distinct key.
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