Maximum number of properties in an event?

[theta3]

Is your question about how to consume a C++ library? No

Hi, Azure Data Explorer has 10000 columns limit. Does this library has similar limit on number of properties per event? I can't find it in the code

[maxgolov]

Historically the 1DS collector enforces the same restrictions and limitations as legacy SDK collector server-side. You can go to the internal portal that you'd normally use to create a new token. Click on ? Help, search for Input constraints. Maximum supported number is 100 columns. Your mileage may vary - for certain pipeline flows a higher number of properties could work. If you really need a more complex structure, you could collate multiple properties as JSON in a string field, then use Kusto todynamic() function to create a JSON object with virtually any number of properties.