DROP AGGREGATE(7) PostgreSQL 9.6.6 Documentation DROP AGGREGATE(7)
NAME
DROP_AGGREGATE - remove an aggregate function
SYNOPSIS
DROP AGGREGATE [ IF EXISTS ] name ( aggregate_signature ) [ CASCADE | RESTRICT ]
where aggregate_signature is:
* |
[ argmode ] [ argname ] argtype [ , ... ] |
[ [ argmode ] [ argname ] argtype [ , ... ] ] ORDER BY [ argmode ] [ argname ] argtype [ , ... ]
DESCRIPTION
DROP AGGREGATE removes an existing aggregate function. To execute this
command the current user must be the owner of the aggregate function.
PARAMETERS
IF EXISTS
Do not throw an error if the aggregate does not exist. A notice is
issued in this case.
name
The name (optionally schema-qualified) of an existing aggregate
function.
argmode
The mode of an argument: IN or VARIADIC. If omitted, the default is
IN.
argname
The name of an argument. Note that DROP AGGREGATE does not actually
pay any attention to argument names, since only the argument data
types are needed to determine the aggregate function's identity.
argtype
An input data type on which the aggregate function operates. To
reference a zero-argument aggregate function, write * in place of
the list of argument specifications. To reference an ordered-set
aggregate function, write ORDER BY between the direct and
aggregated argument specifications.
CASCADE
Automatically drop objects that depend on the aggregate function
(such as views using it), and in turn all objects that depend on
those objects (see Section 5.13, "Dependency Tracking", in the
documentation).
RESTRICT
Refuse to drop the aggregate function if any objects depend on it.
This is the default.
NOTES
Alternative syntaxes for referencing ordered-set aggregates are
described under ALTER AGGREGATE (ALTER_AGGREGATE(7)).
EXAMPLES
To remove the aggregate function myavg for type integer:
DROP AGGREGATE myavg(integer);
To remove the hypothetical-set aggregate function myrank, which takes
an arbitrary list of ordering columns and a matching list of direct
arguments:
DROP AGGREGATE myrank(VARIADIC "any" ORDER BY VARIADIC "any");
COMPATIBILITY
There is no DROP AGGREGATE statement in the SQL standard.
SEE ALSO
ALTER AGGREGATE (ALTER_AGGREGATE(7)), CREATE AGGREGATE
(CREATE_AGGREGATE(7))
PostgreSQL 9.6.6 2017 DROP AGGREGATE(7)
PostgreSQL 9.6.6 - Generated Sat Dec 2 07:55:15 CST 2017