Correct partitions formatting section in mirroring policy documentation

data-explorer/kusto/includes/mirroring-partitions-formatting.md

@@ -0,0 +1,17 @@
+---
+author: natinimni
+ms.author: natinimn
+ms.topic: include
+ms.date: 02/09/2026
+ms.service: azure-data-explorer
+---
+
+## Partitions formatting
+
+The partitions list is any combination of partition columns, specified using one of the forms shown in the following table.
+
+|Partition Type|Syntax|Notes|
+|--|--|--|
+|String column value|*PartitionName* `:` `string` `=` *ColumnName*||
+|Truncated datetime column (value)|*PartitionName* `:` `datetime` `=` (`startofyear` \| `startofmonth` \| `startofweek` \| `startofday`) `(` *ColumnName* `)`|See documentation on [startofyear](../query/startofyear-function.md), [startofmonth](../query/startofmonth-function.md), [startofweek](../query/startofweek-function.md), or [startofday](../query/startofday-function.md) functions.|
+|Truncated Datetime Column Value `=` `bin` `(` *ColumnName* `,` *TimeSpan* `)`|Read more about the [bin](../query/bin-function.md) function.||

data-explorer/kusto/management/alter-merge-mirroring-policy-command.md

@@ -30,7 +30,7 @@ Changes the tables's [mirroring policy](mirroring-policy.md). The mirroring poli
 |*Partitions*| string| | A comma-separated list of columns used to divide the data into smaller partitions. See [Partitions formatting](#partitions-formatting). |
 | *propertyName*, *propertyValue* | `string` | | A comma-separated list of key-value property pairs. See [supported properties](#supported-properties).|
 
-[!INCLUDE [partitions-formatting](../includes/partitions-formatting.md)]
+[!INCLUDE [mirroring-partitions-formatting](../includes/mirroring-partitions-formatting.md)]
 
 > [!NOTE]
 > Each partition is represented as a separate column using the *PartitionName* listed in the *Partitions* list. *PartitionName* must be a case insensitive unique string, both among other partition names and the column names of the mirrored table.

data-explorer/kusto/management/mirroring-policy.md

@@ -39,7 +39,7 @@ The mirroring policy includes the following properties:
 
 [!INCLUDE [mirroring-note](../includes/mirroring-note.md)]
 
-[!INCLUDE [partitions-formatting](../includes/partitions-formatting.md)]
+[!INCLUDE [mirroring-partitions-formatting](../includes/mirroring-partitions-formatting.md)]
 
 > [!NOTE]
 > Each partition is represented as a separate column using the *PartitionName* listed in the *Partitions* list. *PartitionName* must be a case insensitive unique string, both among other partition names and the column names of the mirrored table.