DESCRIBE DYNAMIC TABLE¶

Describes the columns in a dynamic table.

DESCRIBE can be abbreviated to DESC.

See also:: CREATE DYNAMIC TABLE, ALTER DYNAMIC TABLE, DROP DYNAMIC TABLE, SHOW DYNAMIC TABLES

Syntax¶

DESC[RIBE] DYNAMIC TABLE <name>

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Parameters¶

name: Specifies the identifier for the dynamic table to describe. If the identifier contains spaces or special characters, the entire string must be enclosed in double quotes. Identifiers enclosed in double quotes are also case-sensitive.

Access control requirements¶

A role used to execute this operation must have the following privileges at a minimum:

Privilege	Object	Notes
SELECT	The dynamic table that you want to describe.	Some metadata is hidden if you don’t have the MONITOR privilege. For more information, see Privileges to view a dynamic table’s metadata.

The USAGE privilege on the parent database and schema are required to perform operations on any object in a schema. Note that a role granted any privilege on a schema allows that role to resolve the schema. For example, a role granted CREATE privilege on a schema can create objects on that schema without also having USAGE granted on that schema.

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.

Usage notes¶

To DESCRIBE a dynamic table, you must be using a role that has MONITOR privilege on the table.

To post-process the output of this command, you can use the pipe operator (->>) or the RESULT_SCAN function. Both constructs treat the output as a result set that you can query.

For example, you can use the pipe operator or RESULT_SCAN function to select specific columns from the SHOW command output or filter the rows.

When you refer to the output columns, use double-quoted identifiers for the column names. For example, to select the output column type, specify SELECT "type".

You must use double-quoted identifiers because the output column names for SHOW commands are in lowercase. The double quotes ensure that the column names in the SELECT list or WHERE clause match the column names in the SHOW command output that was scanned.

Examples¶

Describe the columns in my_dynamic_table:

DESC DYNAMIC TABLE my_dynamic_table;

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