DROP TYPE

Synopsis

Use the DROP TYPE statement to remove a user-defined type from the database.

Syntax

• Grammar
• Diagram

drop_type ::= DROP TYPE [ IF EXISTS ] type_name [ , ... ] 
              [ CASCADE | RESTRICT ]

drop_type

Semantics

drop_type

type_name

Specify the name of the user-defined type to drop.

Examples

Simple example

yugabyte=# CREATE TYPE feature_struct AS (id INTEGER, name TEXT);
yugabyte=# DROP TYPE feature_struct;

IF EXISTS example

yugabyte=# DROP TYPE IF EXISTS feature_shell;

CASCADE example

yugabyte=# CREATE TYPE feature_enum AS ENUM ('one', 'two', 'three');
yugabyte=# CREATE TABLE feature_tab_enum (feature_col feature_enum);
yugabyte=# DROP TYPE feature_tab_enum CASCADE;

RESTRICT example

yugabyte=# CREATE TYPE feature_range AS RANGE (subtype=INTEGER);
yugabyte=# CREATE TABLE feature_tab_range (feature_col feature_range);
yugabyte=# -- The following should error:
yugabyte=# DROP TYPE feature_range RESTRICT;
yugabyte=# DROP TABLE feature_tab_range;
yugabyte=# DROP TYPE feature_range RESTRICT;

See also

• CREATE TYPE