> 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/15/internals/system-catalogs/pg_sequence.md).

# 53.47. pg\_sequence

## 53.47. pg\_sequence

The catalog `pg_sequence` contains information about sequences. Some of the information about sequences, such as the name and the schema, is in [`pg_class`](/15/internals/system-catalogs/pg_class.md)

**Table 53.47. `pg_sequence` Columns**

| <p>Column Type</p><p>Description</p>                                                                                                                                                                                                                                                   |
| -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| <p><code>seqrelid</code> <code>oid</code> (references <a href="/15/internals/system-catalogs/pg_class.md"><code>pg\_class</code></a>.<code>oid</code>)</p><p>The OID of the <a href="/15/internals/system-catalogs/pg_class.md"><code>pg\_class</code></a> entry for this sequence</p> |
| <p><code>seqtypid</code> <code>oid</code> (references <a href="/15/internals/system-catalogs/pg_type.md"><code>pg\_type</code></a>.<code>oid</code>)</p><p>Data type of the sequence</p>                                                                                               |
| <p><code>seqstart</code> <code>int8</code></p><p>Start value of the sequence</p>                                                                                                                                                                                                       |
| <p><code>seqincrement</code> <code>int8</code></p><p>Increment value of the sequence</p>                                                                                                                                                                                               |
| <p><code>seqmax</code> <code>int8</code></p><p>Maximum value of the sequence</p>                                                                                                                                                                                                       |
| <p><code>seqmin</code> <code>int8</code></p><p>Minimum value of the sequence</p>                                                                                                                                                                                                       |
| <p><code>seqcache</code> <code>int8</code></p><p>Cache size of the sequence</p>                                                                                                                                                                                                        |
| <p><code>seqcycle</code> <code>bool</code></p><p>Whether the sequence cycles</p>                                                                                                                                                                                                       |

***

原文：[PostgreSQL 15.19 Documentation](/15/internals/system-catalogs/pg_sequence.md)（英文原文，待翻譯）


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