SHOW COLUMNS

SHOW COLUMNS lists the columns available for an object. This can be a source, subsource, sink, materialized view, view, or table.

Syntax

Field	Use
item_ref	The name of the object whose columns you want to view. This can be a source, subsource, sink, materialized view, view, or table.

Details

Output format

SHOW COLUMNS’s output is a table, with this structure:

+---------+------------+--------+
| name    | nullable   | type   |
|---------+------------+--------|
| ...     | ...        | ...    |
+---------+------------+--------+

Field	Meaning
name	The name of the column
nullable	Does the column accept `null` values?
type	The column’s type

Rows are sorted by the order in which the fields are defined in the targeted object.

Examples

SHOW SOURCES;

   name
----------
my_sources

SHOW COLUMNS FROM my_source;

  name  | nullable | type
---------+----------+------
 column1 | f       | int4
 column2 | f       | text

Privileges

The privileges required to execute this statement are:

USAGE privileges on the schema containing item_ref.