DESCRIBE and SHOW commands for Apache Iceberg™ tables: New columns in output (Preview)

Attention

This behavior change is in the 2026_02 bundle.

For the current status of the bundle, refer to Bundle history.

When this behavior change bundle is enabled, the output of the following commands includes the following new column:

Column name

Data type

Description

write default

string

The write default for the column. This column is appended to the end of the output.

Note

For the DESCRIBE DYNAMIC TABLE command, when you base a dynamic table on an Iceberg table that has a write default defined for a column, the dynamic table doesn’t inherit the default value. However, the write default column returns in the output for the DESCRIBE DYNAMIC TABLE. command.

When this behavior change bundle is enabled, the output of the SHOW ICEBERG TABLES command includes the following new column(s):

Column name

Data type

Description

iceberg_table_format_version

integer

The version of the Apache IcebergTM table specification that the table conforms to. This column is appended to the end of the output.

Ref: 2210