Name
DROP TYPE — remove a data type
Synopsis
DROP TYPE [ IF EXISTS ] name
[, ...] [ CASCADE | RESTRICT ]
Description
DROP TYPE removes a user-defined data type.
Only the owner of a type can remove it.
Parameters
IF EXISTS
Do not throw an error if the type does not exist. A notice is issued
in this case.
name
The name (optionally schema-qualified) of the data type to remove.
CASCADE
Automatically drop objects that depend on the type (such as
table columns, functions, operators).
RESTRICT
Refuse to drop the type if any objects depend on it. This is
the default.
Examples
To remove the data type box:
DROP TYPE box;
Compatibility
This command is similar to the corresponding command in the SQL
standard, apart from the IF EXISTS
option, which is a PostgreSQL™ extension.
But note that much of the CREATE TYPE command
and the data type extension mechanisms in
PostgreSQL™ differ from the SQL standard.