| title | MSSQLSERVER_12301 | |
|---|---|---|
| description | MSSQLSERVER_12301 | |
| author | MashaMSFT | |
| ms.author | mathoma | |
| ms.date | 04/04/2017 | |
| ms.service | sql | |
| ms.subservice | supportability | |
| ms.topic | reference | |
| ms.custom |
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| helpviewer_keywords |
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[!INCLUDE SQL Server Azure SQL Database Azure SQL Managed Instance FabricSQLDB]
| Attribute | Value |
|---|---|
| Product Name | SQL Server |
| Event ID | 12301 |
| Event Source | MSSQLSERVER |
| Component | SQLEngine |
| Symbolic Name | HK_UNSUPPORTED_NULLABLE_COLUMNS |
| Message Text | Nullable columns in the index key are not supported with 'construct'. |
Do not use nullable columns in the index key.