ALTER AGGREGATE(7) PostgreSQL 9.5.10 Documentation ALTER AGGREGATE(7)
NAME
ALTER_AGGREGATE - change the definition of an aggregate function
SYNOPSIS
ALTER AGGREGATE name ( aggregate_signature ) RENAME TO new_name
ALTER AGGREGATE name ( aggregate_signature )
OWNER TO { new_owner | CURRENT_USER | SESSION_USER }
ALTER AGGREGATE name ( aggregate_signature ) SET SCHEMA new_schema
where aggregate_signature is:
* |
[ argmode ] [ argname ] argtype [ , ... ] |
[ [ argmode ] [ argname ] argtype [ , ... ] ] ORDER BY [ argmode ] [ argname ] argtype [ , ... ]
DESCRIPTION
ALTER AGGREGATE changes the definition of an aggregate function.
You must own the aggregate function to use ALTER AGGREGATE. To change
the schema of an aggregate function, you must also have CREATE
privilege on the new schema. To alter the owner, you must also be a
direct or indirect member of the new owning role, and that role must
have CREATE privilege on the aggregate function's schema. (These
restrictions enforce that altering the owner doesn't do anything you
couldn't do by dropping and recreating the aggregate function. However,
a superuser can alter ownership of any aggregate function anyway.)
PARAMETERS
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 ALTER 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.
new_name
The new name of the aggregate function.
new_owner
The new owner of the aggregate function.
new_schema
The new schema for the aggregate function.
NOTES
The recommended syntax for referencing an ordered-set aggregate is to
write ORDER BY between the direct and aggregated argument
specifications, in the same style as in CREATE AGGREGATE
(CREATE_AGGREGATE(7)). However, it will also work to omit ORDER BY and
just run the direct and aggregated argument specifications into a
single list. In this abbreviated form, if VARIADIC "any" was used in
both the direct and aggregated argument lists, write VARIADIC "any"
only once.
EXAMPLES
To rename the aggregate function myavg for type integer to my_average:
ALTER AGGREGATE myavg(integer) RENAME TO my_average;
To change the owner of the aggregate function myavg for type integer to
joe:
ALTER AGGREGATE myavg(integer) OWNER TO joe;
To move the ordered-set aggregate mypercentile with direct argument of
type float8 and aggregated argument of type integer into schema
myschema:
ALTER AGGREGATE mypercentile(float8 ORDER BY integer) SET SCHEMA myschema;
This will work too:
ALTER AGGREGATE mypercentile(float8, integer) SET SCHEMA myschema;
COMPATIBILITY
There is no ALTER AGGREGATE statement in the SQL standard.
SEE ALSO
CREATE AGGREGATE (CREATE_AGGREGATE(7)), DROP AGGREGATE
(DROP_AGGREGATE(7))
PostgreSQL 9.5.10 2017 ALTER AGGREGATE(7)
PostgreSQL 9.5.10 - Generated Wed Nov 29 19:20:05 CST 2017