A SQL statement showing every write to a Delta table, latest first, with the version, user and time of each. How far back it goes depends on delta.logRetentionDuration, which is 30 days unless changed.
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In the Ultra Transcenders books
Each book explains DESCRIBE HISTORY in context, with comparison tables and the common traps.
Terms in this definition
- Serverless
Compute tier for single Azure SQL databases that scales automatically, pauses when idle and charges by the second. It is offered in General Purpose and Hyperscale, not Business Critical, and reserved capacity does not apply.
- Event
Table in Log Analytics where entries from Windows event logs are kept.
- FIRST
A DAX function available only inside visual calculations. It fetches the value at the start of one axis of the visual's matrix, which makes it handy for comparing each point with the first; its opposite is LAST.
- Chat message roles
Labels on chat messages: instructions go under system, the person's input under user, the model's previous answers under assistant, and results returned by a called tool under tool (or function).