| --- |
| title: pg_exttable |
| --- |
| |
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| |
| The `pg_exttable` system catalog table is used to track external tables and web tables created by the `CREATE EXTERNAL TABLE` command. |
| |
| <a id="topic1__gn143898"></a> |
| <span class="tablecap">Table 1. pg\_catalog.pg\_exttable</span> |
| |
| | column | type | references | description | |
| |-------------------|----------|---------------|------------------------------------------------------------------------------------------------------------------| |
| | `reloid` | oid | pg\_class.oid | The OID of this external table. | |
| | `location` | text\[\] | | The URI location(s) of the external table files. | |
| | `fmttype` | char | | Format of the external table files: `t` for text, or `c` for csv. | |
| | `fmtopts` | text | | Formatting options of the external table files, such as the field delimiter, null string, escape character, etc. | |
| | `command` | text | | The OS command to execute when the external table is accessed. | |
| | `rejectlimit` | integer | | The per segment reject limit for rows with errors, after which the load will fail. | |
| | `rejectlimittype` | char | | Type of reject limit threshold: `r` for number of rows. | |
| | `fmterrtbl` | oid | pg\_class.oid | The object id of the error table where format errors will be logged. | |
| | `encoding` | text | | The client encoding. | |
| | `writable` | boolean | | `0` for readable external tables, `1` for writable external tables. | |
| |
| |
