Functions, aggregates, and user types

Query system_schema functions, aggregates, and types tables to get information about user-defined functions (UDFs), user-defined aggregates (UDAs), and user-defined types (UDTs).

Show one user-defined function in the system_schema.functions table.

EXPAND ON
SELECT * FROM system_schema.functions LIMIT 1;
EXPAND OFF;

Results

The following output shows the first record using the cqlsh EXPAND ON option.

EXPAND set to ON

 keyspace_name | function_name | argument_types | argument_names | body | called_on_null_input | language | return_type
---------------+---------------+----------------+----------------+------+----------------------+----------+-------------


(0 rows)
EXPAND set to OFF

List the schema settings for one user-defined aggregate.

EXPAND ON
SELECT * FROM system_schema.aggregates LIMIT 1;
EXPAND OFF;

Results

EXPAND set to ON

 keyspace_name | aggregate_name | argument_types | final_func | initcond | return_type | state_func | state_type
---------------+----------------+----------------+------------+----------+-------------+------------+------------


(0 rows)
EXPAND set to OFF

Show the schema settings for one user-defined type.

EXPAND ON
SELECT * FROM system_schema.types LIMIT 1;
EXPAND OFF;

Results

EXPAND set to ON

 keyspace_name | type_name | field_names | field_types
---------------+-----------+-------------+-------------


(0 rows)
EXPAND set to OFF

Functions, aggregates, and user types

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