series_sign() - Azure Data Explorer | Microsoft Docs
https://docs.microsoft.com/en-us/azure/data-explorer/kusto/query/series-signfunction
Mar 07, 2022 . series: Input numeric array, on which the sign function is applied. The argument must be a dynamic array. Returns Dynamic array of calculated sign function values (-1 for negative, 0 for 0, and 1 for positive). Any non-numeric element yields a null element value. Example print arr = dynamic ( [-6,0,8]) | extend arr_sign = series_sign (arr)
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