DROP_AGGREGATE(7)

1DROP AGGREGATE(7)        PostgreSQL 11.3 Documentation       DROP AGGREGATE(7)
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NAME

6       DROP_AGGREGATE - remove an aggregate function
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SYNOPSIS

9       DROP AGGREGATE [ IF EXISTS ] name ( aggregate_signature ) [, ...] [ CASCADE | RESTRICT ]
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11       where aggregate_signature is:
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13       * |
14       [ argmode ] [ argname ] argtype [ , ... ] |
15       [ [ argmode ] [ argname ] argtype [ , ... ] ] ORDER BY [ argmode ] [ argname ] argtype [ , ... ]
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DESCRIPTION

18       DROP AGGREGATE removes an existing aggregate function. To execute this
19       command the current user must be the owner of the aggregate function.
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PARAMETERS

22       IF EXISTS
23           Do not throw an error if the aggregate does not exist. A notice is
24           issued in this case.
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26       name
27           The name (optionally schema-qualified) of an existing aggregate
28           function.
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30       argmode
31           The mode of an argument: IN or VARIADIC. If omitted, the default is
32           IN.
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34       argname
35           The name of an argument. Note that DROP AGGREGATE does not actually
36           pay any attention to argument names, since only the argument data
37           types are needed to determine the aggregate function's identity.
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39       argtype
40           An input data type on which the aggregate function operates. To
41           reference a zero-argument aggregate function, write * in place of
42           the list of argument specifications. To reference an ordered-set
43           aggregate function, write ORDER BY between the direct and
44           aggregated argument specifications.
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46       CASCADE
47           Automatically drop objects that depend on the aggregate function
48           (such as views using it), and in turn all objects that depend on
49           those objects (see Section 5.13).
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51       RESTRICT
52           Refuse to drop the aggregate function if any objects depend on it.
53           This is the default.
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NOTES

56       Alternative syntaxes for referencing ordered-set aggregates are
57       described under ALTER AGGREGATE (ALTER_AGGREGATE(7)).
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EXAMPLES

60       To remove the aggregate function myavg for type integer:
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62           DROP AGGREGATE myavg(integer);
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64       To remove the hypothetical-set aggregate function myrank, which takes
65       an arbitrary list of ordering columns and a matching list of direct
66       arguments:
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68           DROP AGGREGATE myrank(VARIADIC "any" ORDER BY VARIADIC "any");
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70       To remove multiple aggregate functions in one command:
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72           DROP AGGREGATE myavg(integer), myavg(bigint);
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COMPATIBILITY

75       There is no DROP AGGREGATE statement in the SQL standard.
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