Postgres and Open Source Experts

In PostgreSQL, we use the make_timestamp() and make_timestamptz() functions to show the timestamps. Both functions give errors when the input parameters have some issue maybe due to the wrong data type, etc.

Triggers are useful in many ways such as keeping an audit for changes and transactions, applying the business rules, and validating the user input data.

A trigger can be altered in PostgreSQL by using the ALTER TRIGGER command. We can rename the trigger and then verify if the change in name has occurred or not.

The date_bin() function is used to truncate a specified timestamp into another timestamp using an interval based on the original timestamps.

The Exp() function in Postgresql takes a numeric value as an input and returns a value having a Numeric data type or specifically DOUBLE PRECISION.

The cbrt() function in PostgreSQL takes a numeric value as an input and returns a value having DOUBLE PRECISION data type.

Exceptions are unexpected issues that we encounter while executing a program code. These disturb and sometimes abort the normal functioning of the program.

To get records from the last 24 hours in Postgres, execute the "SELECT * " command and set a condition to subtract "24 hours" from the current DateTime.

PostgreSQL provides an ASSERT statement for inserting debugging checks for the program. The ASSERT statement provides a condition to the program.

To insert a single quote in the text, we will have to double it up. This makes the text very complex and unreadable in case the string contains many single quotes.