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Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,9 @@ ms.date: 08/11/2024

Alters an existing external table mapping. For more information, see [Data mappings](mappings.md).

> [!NOTE]
> External table mappings apply only to reading data from external tables, not for exporting data.

## Syntax

`.alter` `external` `table` *ExternalTableName* `mapping` *MappingName* *MappingInJsonFormat*
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Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,9 @@ ms.date: 08/11/2024

Create a new external table data mapping. For more information, see [Data mappings](mappings.md).

> [!NOTE]
> External table mappings apply only to reading data from external tables, not for exporting data.

## Syntax

`.create` `external` `table` *ExternalTableName* `mapping` *MappingName* *MappingInJsonFormat*
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