drop-aggregate-transact-sql.md

title	DROP AGGREGATE (Transact-SQL) | Microsoft Docs
ms.custom	SQL2016_New_Updated
ms.date	10/28/2015
ms.prod	sql-non-specified
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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
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author	JennieHubbard
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DROP AGGREGATE (Transact-SQL)

[!INCLUDEtsql-appliesto-ss2008-xxxx-xxxx-xxx_md]

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  

Arguments

IF EXISTS

Applies to: [!INCLUDEssNoVersion] ([!INCLUDEssSQL15] 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