SHOW FUNCTIONS¶

Lists all the native (i.e. system-defined/built-in) scalar functions provided by Snowflake, as well as any user-defined functions (UDFs) or external functions that have been created for your account.

For more information, see SQL Function Reference, User-Defined Functions Overview, and Writing External Functions.

See also:: SHOW USER FUNCTIONS , SHOW EXTERNAL FUNCTIONS , CREATE FUNCTION , DROP FUNCTION , ALTER FUNCTION , DESCRIBE FUNCTION

Syntax¶

SHOW FUNCTIONS [ LIKE '<pattern>' ]
               [ IN
                    {
                      ACCOUNT                  |

                      CLASS <class_name>       |

                      DATABASE                 |
                      DATABASE <database_name> |

                      SCHEMA                   |
                      SCHEMA <schema_name>     |
                      <schema_name>
                    }
               ]

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Parameters¶

LIKE 'pattern'

Filters the command output by object name. The filter uses case-insensitive pattern matching with support for SQL wildcard characters (% and _).

For example, the following patterns return the same results:

... LIKE '%testing%' ...

... LIKE '%TESTING%' ...

[ IN ... ]

Optionally specifies the scope of the command. Specify one of the following:

ACCOUNT

Returns records for the entire account.

CLASS class_name

Returns records for the specified class (class_name).

DATABASE, . DATABASE db_name

Returns records for the current database in use or a specified database (db_name).

If you specify DATABASE without db_name and no database is in use, the keyword has no effect on the output.

SCHEMA, . SCHEMA schema_name, . schema_name

Returns records for the current schema in use or a specified schema (schema_name).

SCHEMA is optional if a database is in use or if you specify the fully-qualified schema_name (e.g. db.schema).

If no database is in use, specifying SCHEMA has no effect on the output.

Default: Depends on whether the session currently has a database in use:

Database: DATABASE is the default (that is, the command returns the objects you have privileges to view in the database).
No database: ACCOUNT is the default (that is, the command returns the objects you have privileges to view in your account).

Usage Notes¶

The command does not require a running warehouse to execute.
The command returns a maximum of 10K records for the specified object type, as dictated by the access privileges for the role used to execute the command; any records above the 10K limit are not returned, even with a filter applied.

To view results for which more than 10K records exist, query the corresponding view (if one exists) in the Snowflake Information Schema.

To post-process the output of this command, you can use the RESULT_SCAN function, which treats the output as a table that can be queried.

If you specify CLASS, only the following columns are return:

| name | min_num_arguments | max_num_arguments | arguments | descriptions | language |

The output of this command might include objects with names like SN_TEMP_OBJECT_<n> (where <n> is a number). These are temporary objects that are created by the Snowpark library on behalf of the user.

The IS_MEMOIZABLE column is not included in the output when the 2022_08 behavior change release bundle is disabled.

For information on disabling behavior change release bundles, see Behavior Change Management.

Output¶

The command output provides function properties and metadata in the following columns:

Column	Description
created_on	The timestamp at which the function was created.
name	The function’s name.
schema_name	The name of the schema that the function exists in. (NULL for built-in functions.)
is_builtin	True if the function is a built-in function; false otherwise.
is_aggregate	True if the function is an aggregate function; false otherwise.
is_ansi	True if the function is defined as part of the ANSI SQL standard; false otherwise.
min_num_arguments	Minimum number of arguments.
max_num_arguments	Maximum number of arguments.
arguments	Shows the data types of the arguments and of the return value.
description	Description of the function.
catalog_name	The name of the database that the function exists in. (NULL for built-in functions.)
is_table_function	True if the function is a table function; false otherwise.
valid_for_clustering	True if the function can be used in a CLUSTER BY expression; false otherwise.
is_secure	True if the function is a secure function; false otherwise.
is_external_function	True if the function is an external function; false otherwise.
language	For built-in functions, this column shows “SQL”. . For user-defined functions, this column shows the language in which the function was written (e.g. “JAVASCRIPT” or “SQL”). . For external functions, this column shows “EXTERNAL”.
is_memoizable	Y (yes) if the function is memoizable, N (no) otherwise.

Usage Notes¶

Columns that start with the prefix is_ return either Y (yes) or N (no).

The IS_MEMOIZABLE column is not included in the output when the 2022_08 behavior change release bundle is disabled.

For information on disabling behavior change release bundles, see Behavior Change Management.

Examples¶

Show all functions:

SHOW FUNCTIONS;

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Show only functions matching the specified regular expression:

SHOW FUNCTIONS LIKE 'SQUARE';

------------+--------+-------------+------------+--------------+---------+-------------------+-------------------+----------------------------------------------------------------------+------------------------------------------------------------+----------+---------------+
 created_on | name   | schema_name | is_builtin | is_aggregate | is_ansi | min_num_arguments | max_num_arguments |                               arguments                              |                      description                           | language | is_memoizable |
------------+--------+-------------+------------+--------------+---------+-------------------+-------------------+----------------------------------------------------------------------+------------------------------------------------------------+----------+---------------+
            | SQUARE |             | Y          | N            | Y       | 1                 | 1                 | SQUARE(NUMBER(38,0)) RETURN NUMBER(38,0), SQUARE(FLOAT) RETURN FLOAT | Compute the square of the input expression.                | SQL      | N             |
------------+--------+-------------+------------+--------------+---------+-------------------+-------------------+----------------------------------------------------------------------+------------------------------------------------------------+----------+---------------+

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