Authentication failures and related problems generally manifest themselves through error messages like the following:

When you create a table and you realize that you made a mistake, or the requirements of the application change, you can drop the table and create it again. But this is not

PostgreSQL provides various lock modes to control concurrent access to data in tables. These modes can be used for application-controlled locking

The catalog pg_range stores information about range types. This is in addition to the types' entries in

Table 50-1 lists the system catalogs. More detailed documentation of each catalog follows below. Most system catalogs are copied from the template

The catalog pg_aggregate stores information about aggregate functions. An aggregate function is a function that operates on a set of values

The tsm_system_rows module provides the table sampling method SYSTEM_ROWS, which can be used in the

The catalog pg_collation describes the available collations, which are essentially mappings from an SQL name to operating system locale categories

The view pg_settings provides access to run-time parameters of the server. It is essentially an alternative interface to the

A column can be assigned a default value. When a new row is created and no values are specified for some of the columns, those columns will be filled with their respective