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Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :

ISBN : 978-2-7460-9712-4
EAN : 9782746097124
(Editions ENI)

GNU/Linux	CentOS 2.1AS (Slurm)
	drop_aggregate(l)

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DROP AGGREGATE

NAME
SYNOPSIS
DESCRIPTION
USAGE
COMPATIBILITY

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NAME

DROP AGGREGATE − Removes the definition of an aggregate function

SYNOPSIS

DROP AGGREGATE name type

INPUTS

	name		The name of an existing aggregate function.
	type		The input datatype of an existing aggregate function, or * if the function accepts any input type. (Refer to the PostgreSQL User’s Guide for further information about data types.) [Comment: This should become a cross-reference rather than a hard-coded chapter number]

OUTPUTS

DROP

Message returned if the command is successful.

ERROR: RemoveAggregate: aggregate ’agg’ for ’type’ does not exist

This message occurs if the aggregate function specified does not exist in the database.

DESCRIPTION

DROP AGGREGATE will remove all references to an existing aggregate definition. To execute this command the current user must be the owner of the aggregate.

NOTES
Use CREATE AGGREGATE [create_aggregate(l)] to create aggregate functions.

USAGE

To remove the myavg aggregate for type int4:

DROP AGGREGATE myavg int4;

COMPATIBILITY

SQL92
There is no DROP AGGREGATE statement in SQL92; the statement is a Postgres language extension.

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drop_aggregate(l)