# row_timestamp¶

## Description¶

Returns the value of the timestamp column for Event datasets, the “Valid From” column for Interval or Resource datasets, or null for Table datasets.

timestamp

## Domain¶

This is a scalar function (calculates a single output value for a single input row.)

## Usage¶

row_timestamp( )


## Examples¶

make_col time_taken:if_null(row_end_time() - row_timestamp(), 0s)


Create a column time_taken that is the duration of the state within the row.