Error, warning, and log messages generated within the server code should be created using ereport, or its older cousin elog

test_decoding is an example of a logical decoding output plugin. It doesn't do anything especially useful, but can serve as a starting point for

The catalog pg_class catalogs tables and most everything else that has columns or is otherwise similar to a table. This includes indexes (but

NameALTER FUNCTION -- change the definition of a function Synopsis

The view pg_indexes provides access to useful information about each index in the database.

Transactions are a fundamental concept of all database systems. The essential point of a transaction is that it bundles multiple steps into a single

GiST stands for Generalized Search Tree. It is a balanced, tree-structured access method, that acts as a base template in which to implement

NameDROP FOREIGN DATA WRAPPER -- remove a foreign-data wrapper Synopsis

Namevacuumdb -- garbage-collect and analyze a PostgreSQL database

The catalog pg_constraint stores check, primary key, unique, foreign key, and exclusion constraints on tables. (Column constraints are not treated