52.42. pg_publication_rel
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## 52.42. pg_publication_rel #

The catalog pg_publication_rel contains the mapping between relations and publications in the database. This is a many-to-many mapping. See also Section 53.18 for a more user-friendly view of this information.

Table 52.42. pg_publication_rel Columns

Column Type Description
`oid` oid Row identifier
`prpubid` oid (references pg_publication.`oid`) Reference to publication
`prrelid` oid (references pg_class.`oid`) Reference to relation
`prqual` pg_node_tree Expression tree (in `nodeToString()` representation) for the relation's publication qualifying condition. Null if there is no publication qualifying condition.
`prattrs` int2vector (references pg_attribute.`attnum`) This is an array of values that indicates which table columns are part of the publication. For example, a value of `1 3` would mean that the first and the third table columns are published. A null value indicates that all columns are published.

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