The view pg_group exists for backwards compatibility: it emulates a catalog that existed in PostgreSQL before
Namepg_recvlogical -- control PostgreSQL logical decoding streams
NameDROP FUNCTION -- remove a function Synopsis
The view pg_user provides access to information about database users. This is simply a publicly readable view of
It is frequently convenient to group users together to ease management of privileges: that way, privileges can be granted to, or revoked from, a group as a whole. In
Each heap and index relation, except for hash indexes, has a Free Space Map (FSM) to keep track of available space in the relation. It's stored alongside the main relation
NameALTER LANGUAGE -- change the definition of a procedural language Synopsis
SQL UNION constructs must match up possibly dissimilar types to become a single result set. The resolution algorithm is applied separately to each
The xml data type can be used to store XML data. Its advantage over storing XML data in a text field is that it checks the
PostgreSQL offers encryption at several levels, and provides flexibility in protecting data from disclosure due to database server theft, unscrupulous
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