KQL advanced hunting: arg_max, timespans and correlation joins
This sheet compares arg_max grouping, ago() timespan literal, Time-window join, Exact-timestamp join.
| Criterion | arg_max grouping | ago() timespan literal | Time-window join | Exact-timestamp join |
|---|---|---|---|---|
| What it does | Latest row per entity | Bounds the query window | Correlates two tables within a window | Attempts exact equality on timestamps |
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