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Postgres documentation
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(which could be a table, view, index, or sequence),
their types, and any special attributes such as <literal>NOT NULL</literal>
or defaults, if any.
- If the relation is, in fact, a table, any defined indexes are also listed.
+ If the relation is, in fact, a table, any defined indices, primary keys, unique
+ constraints and check constraints are also listed.
If the relation is a view, the view definition is also shown.
</para>