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learn-build-service-prod merged 4 commits into from
Feb 11, 2026
Merged

Repo sync for protected branch #2846

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urishapira Feb 11, 2026
fc63504
Merge pull request #7379 from urishapira/improve-qap-docs
prmerger-automator[bot] Feb 11, 2026
1583d43
Merge pull request #7380 from MicrosoftDocs/repo_sync_working_branch
Taojunshen Feb 11, 2026
2e068f1
Merge pull request #7381 from MicrosoftDocs/main
learn-build-service-prod[bot] Feb 11, 2026
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5 changes: 1 addition & 4 deletions data-explorer/kusto/management/alter-merge-query-acceleration-policy-command.md
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Expand Up @@ -41,10 +41,7 @@ You must have at least [Database Admin](../access-control/role-based-access-cont
| Hot | `Timespan` | | The hot period defined in the query acceleration policy. Minimum value = 1 d. This property is required if no query acceleration policy is defined on the external table. |
| HotWindows | `DateTime` | | One or more optional time windows. Delta data files created within these time windows are accelerated. |
| MaxAge | `Timespan` | | The external table returns accelerated data if the last index refresh time is greater than @now - MaxAge. Otherwise, external table operates in nonaccelerated mode. Default is 5 minutes. Minimum is 1 minute. |
| HotDateTimeColumn | `String` | | The name of a datetime column in the Delta table whose values will be used to determine hot-cache eligibility. When set, data files whose rows have values within the configured Hot period (and/or HotWindows) are selected for caching. |

> [!NOTE]
> Query acceleration is applied to data within a specific time period, defined as `timespan`, starting from the `modificationTime` as stated for each file in the [delta log](https://github.com/delta-io/delta/blob/master/PROTOCOL.md#add-file-and-remove-file).
| HotDateTimeColumn | `String` | | Name of a datetime column used to determine hot-cache eligibility. A data file will be cached if its min/max stats for this column are within the configured Hot period and/or HotWindows. If not specified, eligibility is determined using the file modificationTime. Eligibility is computed using [delta log](https://github.com/delta-io/delta/blob/master/PROTOCOL.md#add-file-and-remove-file) metadata only - setting this property does not add query-time overhead|

### Example

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2 changes: 1 addition & 1 deletion data-explorer/kusto/management/alter-query-acceleration-policy-command.md
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Expand Up @@ -39,7 +39,7 @@ You must have at least [Database Admin](../access-control/role-based-access-cont
| Hot | `Timespan` | :heavy_check_mark: | The hot period defined in the query acceleration policy. Minimum value = 1 d. |
| HotWindows | `DateTime` | | One or more optional time windows. Delta data files created within these time windows are accelerated. |
| MaxAge | `Timespan` | | The external table returns accelerated data if the last index refresh time is greater than @now - MaxAge. Otherwise, the external table operates in non-accelerated mode. Default is 5 minutes. Minimum is 1 minute. This property can also be overridden at query time by using the [`external_table()` function's](../query/external-table-function.md) `MaxAgeOverride` parameter. |
| HotDateTimeColumn | `String` | | Optional. The name of a datetime column in the Delta table whose values will be used to determine hot-cache eligibility. When set, data files whose rows have values within the configured Hot period (and/or HotWindows) are selected for caching. |
| HotDateTimeColumn | `String` | | The Name of a datetime column used to determine hot-cache eligibility. A data file will be cached if its min/max stats for this column are within the configured Hot period and/or HotWindows. If not specified, eligibility is determined using the file modificationTime. Eligibility is computed using [delta log](https://github.com/delta-io/delta/blob/master/PROTOCOL.md#add-file-and-remove-file) metadata only - setting this property does not add query-time overhead |

::: moniker-end

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