| --- |
| title: pg_compression |
| --- |
| |
| The `pg_compression` system catalog table describes the compression methods available.. |
| |
| <a id="topic1__gg143898"></a> |
| <span class="tablecap">Table 1. pg\_catalog.pg\_compression</span> |
| |
| | column | type | modifers | storage | description | |
| |--------------------|---------|----------|---------|-----------------------------------| |
| | `compname` | name | not null | plain | Name of the compression | |
| | `compconstructor` | regproc | not null | plain | Name of compression constructor | |
| | `compdestructor` | regproc | not null | plain | Name of compression destructor | |
| | `compcompressor` | regproc | not null | plain | Name of the compressor | |
| | `compdecompressor` | regproc | not null | plain | Name of the decompressor | |
| | `compvalidator` | regproc | not null | plain | Name of the compression validator | |
| | `compowner` | oid | not null | plain | oid from pg\_authid | |
| |
| |
| |
| |
