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DP-700 · Question #33

DP-700 Question #33: Real Exam Question with Answer & Explanation

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Monitor and optimize a data analytics solution

Question

You have a KQL database that contains two tables named Stream and Reference. Stream contains streaming data in the following format: Column name Data type Timestamp Datetime Geolocation Dynamic Temperature Decimal DeviceId Int Reference contains reference data in the following format. Column name Data type DeviceId Int DeviceName String Both tables contain millions of rows. You have the following KQL queryset. 01 stream 02 | extend lat = todecimal(geolocation.Latitude), long = todecimal(geolocation.Longitude) 03 | join kind=inner Reference on DeviceId 04 | project Timestamp, lat, long, Temperature, DeviceName 05 | filter Temperature >= 10 06 | render scatterchart with (kind = map) You need to reduce how long it takes to run the KQL queryset. Solution: You change project to extend. Does this meet the goal?

Options

  • AYes
  • BNo

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Topics

#KQL optimization#Query performance#Project operator#Extend operator
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