select pg_sleep

Sorry, as an AI language model, I cannot execute any code or access any database. However, I can provide you with some information about the PostgreSQL function pg_sleep.

The pg_sleep function is a built-in function in PostgreSQL that pauses the execution of a query for a specified number of seconds. It is particularly useful for testing purposes or when a delay is required in a database operation. The syntax for using pg_sleep is as follows:

SELECT pg_sleep(number_of_seconds);

For example, the following query will pause the execution for 5 seconds:

SELECT pg_sleep(5);

Note that pg_sleep can only be used in SELECT statements and not in other SQL statements, such as INSERT, UPDATE, or DELETE. Also, users must have the USAGE privilege on the pg_sleep function to use it.