> 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-subscription-rel.md).

# 52.55. pg\_subscription\_rel \#

The catalog `pg_subscription_rel` contains the state for each replicated relation in each subscription. This is a many-to-many mapping.

This catalog only contains tables known to the subscription after running either [`CREATE SUBSCRIPTION`](/reference/sql-commands/sql-createsubscription.md) or [`ALTER SUBSCRIPTION ... REFRESH PUBLICATION`](/reference/sql-commands/sql-altersubscription.md).

**Table 52.55. `pg_subscription_rel` Columns**

| <p>Column Type</p><p>Description</p>                                                                                                                                                                                                                    |
| ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| <p><code>srsubid</code> <code>oid</code> (references <a href="/pages/pGSD3E1IwILeaX6Tueat"><code>pg\_subscription</code></a>.<code>oid</code>)</p><p>Reference to subscription</p>                                                                      |
| <p><code>srrelid</code> <code>oid</code> (references <a href="/pages/b1fii6hWVNacZFXaxWON"><code>pg\_class</code></a>.<code>oid</code>)</p><p>Reference to relation</p>                                                                                 |
| <p><code>srsubstate</code> <code>char</code></p><p>State code: <code>i</code> = initialize, <code>d</code> = data is being copied, <code>f</code> = finished table copy, <code>s</code> = synchronized, <code>r</code> = ready (normal replication)</p> |
| <p><code>srsublsn</code> <code>pg\_lsn</code></p><p>Remote LSN of the state change used for synchronization coordination when in <code>s</code> or <code>r</code> states, otherwise null</p>                                                            |

<br>

***

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


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