> For the complete documentation index, see [llms.txt](https://docs.postgresql.tw/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.postgresql.tw/internals/catalogs/catalog-pg-auth-members.md).

# 52.9. pg\_auth\_members \#

The catalog `pg_auth_members` shows the membership relations between roles. Any non-circular set of relationships is allowed.

Because user identities are cluster-wide, `pg_auth_members` is shared across all databases of a cluster: there is only one copy of `pg_auth_members` per cluster, not one per database.

**Table 52.9. `pg_auth_members` Columns**

| <p>Column Type</p><p>Description</p>                                                                                                                                                                   |
| ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| <p><code>oid</code> <code>oid</code></p><p>Row identifier</p>                                                                                                                                          |
| <p><code>roleid</code> <code>oid</code> (references <a href="/pages/nyEMOe5gQKgypFQTDbjS"><code>pg\_authid</code></a>.<code>oid</code>)</p><p>ID of a role that has a member</p>                       |
| <p><code>member</code> <code>oid</code> (references <a href="/pages/nyEMOe5gQKgypFQTDbjS"><code>pg\_authid</code></a>.<code>oid</code>)</p><p>ID of a role that is a member of <code>roleid</code></p> |
| <p><code>grantor</code> <code>oid</code> (references <a href="/pages/nyEMOe5gQKgypFQTDbjS"><code>pg\_authid</code></a>.<code>oid</code>)</p><p>ID of the role that granted this membership</p>         |
| <p><code>admin\_option</code> <code>bool</code></p><p>True if <code>member</code> can grant membership in <code>roleid</code> to others</p>                                                            |
| <p><code>inherit\_option</code> <code>bool</code></p><p>True if the member automatically inherits the privileges of the granted role</p>                                                               |
| <p><code>set\_option</code> <code>bool</code></p><p>True if the member can <a href="/pages/-LADBQPmdXBRJuqBUmmP"><code>SET ROLE</code></a> to the granted role</p>                                     |

<br>

***

原文：[PostgreSQL 18.6 Documentation](https://www.postgresql.org/docs/18/catalog-pg-auth-members.html)（英文原文，待翻譯）


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