SHOW EXTERNAL VOLUMES
Lists the external volumes in your account for which you have access privileges.
The output returns external volume metadata and properties.
- See also:
CREATE EXTERNAL VOLUME , DROP EXTERNAL VOLUME , ALTER EXTERNAL VOLUME , DESCRIBE EXTERNAL VOLUME
Syntax
SHOW EXTERNAL VOLUMES [ LIKE '' ]
Parameters
LIKE 'pattern'Optionally 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%' ...
. Default: No value (no filtering is applied to the output).
Access control requirements
A role used to execute this operation must have the following
privileges at a minimum:
Privilege |
Object |
Notes |
|---|
USAGE |
External volume |
To see a particular external volume in the output for SHOW EXTERNAL VOLUMES, a role must have the USAGE privilege on that external volume. |
For instructions on creating a custom role with a specified set of privileges, see Creating custom roles.
For general information about roles and privilege grants for performing SQL actions on
securable objects, see Overview of Access Control.
Output
The command output provides table properties and metadata in the following columns:
Column |
Description |
|---|
name
|
Name of the external volume. |
allow_writes
|
Signifies whether Snowflake can write files to the storage location(s). |
comment
|
Comment for the external volume. |
Usage notes
The command doesn’t require a running warehouse to execute.
The command only returns objects for which the current user’s current role has been granted at least one access privilege.
The MANAGE GRANTS access privilege implicitly allows its holder to see every object in the account. By default, only the account
administrator (users with the ACCOUNTADMIN role) and security administrator (users with the SECURITYADMIN role) have the
MANAGE GRANTS privilege.
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. You can also use the
pipe operator to query the output of this command.
Examples
Show all external volumes:
Show all the external volumes whose name starts with aws that you have privileges to view:
SHOW EXTERNAL VOLUMES LIKE 'aws%';