---
title: "MSSQLSERVER_12300 | Microsoft Docs"
ms.custom: ""
ms.date: "04/04/2017"
ms.prod: sql
ms.reviewer: ""
ms.technology: supportability
ms.topic: "language-reference"
helpviewer_keywords: 
  - "12300 (Database Engine error)"
ms.assetid: ac71e2e1-5857-4115-a720-7dae08769926
author: MashaMSFT
ms.author: mathoma
---
# MSSQLSERVER_12300
[!INCLUDE[appliesto-ss-xxxx-xxxx-xxx-md](../../includes/appliesto-ss-xxxx-xxxx-xxx-md.md)]
  
## Details  
  
|||  
|-|-|  
|Product Name|SQL Server|  
|Event ID|12300|  
|Event Source|MSSQLSERVER|  
|Component|SQLEngine|  
|Symbolic Name|HK_UNSUPPORTED_COMPUTED_COLUMNS|  
|Message Text|Computed columns are not supported with '*construct*'.|  
  
## User Action  
Computed columns are not supported with memory-optimized tables.  
  
## See Also  
[In-Memory OLTP (In-Memory Optimization)](~/relational-databases/in-memory-oltp/in-memory-oltp-in-memory-optimization.md)