query_start_time¶

Description¶

Returns the earliest time of the query time window.

timestamp

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

query_start_time()

make_col is_previous:(query_start_time() > some_time_col)

Create a column is_previous, which is true if the some_time_col column contains a time earlier than the query start time.

querystarttime (deprecated)