drop-aggregate-transact-sql.md

description	DROP AGGREGATE (Transact-SQL)
title	DROP AGGREGATE (Transact-SQL) | Microsoft Docs
ms.custom
ms.date	05/10/2017
ms.prod	sql
ms.prod_service	sql-database
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ms.technology	t-sql
ms.topic	reference
f1_keywords	DROP_AGGREGATE_TSQL DROP AGGREGATE
dev_langs	TSQL
helpviewer_keywords	aggregate functions [SQL Server], removing removing user-defined functions dropping user-defined functions user-defined functions [CLR integration] deleting user-defined functions DROP AGGREGATE statement
ms.assetid	84ffc4e7-c451-4f1f-9a67-7fc3a120e53f
author	WilliamDAssafMSFT
ms.author	wiassaf

DROP AGGREGATE (Transact-SQL)

[!INCLUDE SQL Server]

Removes a user-defined aggregate function from the current database. User-defined aggregate functions are created by using CREATE AGGREGATE.

Transact-SQL Syntax Conventions

Syntax

DROP AGGREGATE [ IF EXISTS ] [ schema_name . ] aggregate_name  

[!INCLUDEsql-server-tsql-previous-offline-documentation]

Arguments

IF EXISTS
Applies to: [!INCLUDEssNoVersion] ( [!INCLUDEsssql16-md] through current version).

Conditionally drops the aggregate only if it already exists.

schema_name
Is the name of the schema to which the user-defined aggregate function belongs.

aggregate_name
Is the name of the user-defined aggregate function you want to drop.

Remarks

DROP AGGREGATE does not execute if there are any views, functions, or stored procedures created with schema binding that reference the user-defined aggregate function you want to drop.

Permissions

To execute DROP AGGREGATE, at a minimum, a user must have ALTER permission on the schema to which the user-defined aggregate belongs, or CONTROL permission on the aggregate.

Examples

The following example drops the aggregate Concatenate.

DROP AGGREGATE dbo.Concatenate;  

See Also

CREATE AGGREGATE (Transact-SQL)
Create User-defined Aggregates