The catalog pg_foreign_table contains auxiliary information about foreign tables. A foreign table is primarily represented by a pg_class entry, just like a regular table. Its pg_foreign_table entry contains the information that is pertinent only to foreign tables and not any other kind of relation.
Column | Type | Description |
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| The OID of the pg_class entry for this foreign table. |
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| OID of the foreign server for this foreign table. |
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| Foreign table options, as“keyword=value”strings. |