In PostgreSQL, you can use the pg_sleep() function to delay execution for a given number of seconds.

It makes the current session’s process sleep until the specified number of seconds have elapsed. It works similar to MySQL‘s sleep() function, and also TSQL‘s waitfor statement in SQL Server.

The pg_sleep() function accepts a double precision argument, so you can also specify fractional-second delays.

The sleep delay will be at least as long as specified. However, it could be longer depending on factors such as server load, as well as your platform’s effective resolution of the sleep interval.

In PostgreSQL, you can use the pg_sleep_for() function to delay execution for a given interval.

It makes the current session’s process sleep until the specified interval has elapsed.

The sleep delay will be at least as long as specified. However, it could be longer depending on factors such as server load, as well as your platform’s effective resolution of the sleep interval.

In PostgreSQL, you can use the pg_sleep_until() function to delay execution until a specified timestamp.

This is useful for when a specific wake-up time is desired.

Note that pg_sleep_until is not guaranteed to wake up exactly at the specified time, but it will not wake up any earlier.

In Postgres, the age() function returns the age based on two timestamp or date variables.

The result is returned using years and months, rather than just days.

For example, a result might look like this: 3 years 2 mons 30 days.