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Documentation
/ SQL
/ Statements
Create Type
The CREATE TYPE statement defines a new type in the catalog.
Examples
-- create a simple enum type
CREATE TYPE mood AS ENUM ('happy', 'sad', 'curious');
-- create a simple struct type
CREATE TYPE many_things AS STRUCT(k INTEGER, l VARCHAR);
-- create a simple union type
CREATE TYPE one_thing AS UNION(number INTEGER, string VARCHAR);
-- create a type alias
CREATE TYPE x_index AS INTEGER;
Syntax
CREATE TYPE defines a new data type available to this duckdb instance. These new
types can then be inspected in the duckdb_types table.
Extending these custom types to support custom operators (such as the PostgreSQL && operator)
would require C++ development. To do this, create an extension.