«

»

Feb
25

How To Use Built-in Functions in Teradata?

First of all what are Built-in functions?

These are functions which do not need any sort of arguments but still returns information about the system; user, date, time, session etc. Built-in functions are sometimes referred to as special registers. Mostly used with the SELECT statement.

SELECT <Built-In Function>


• ACCOUNT: – If you are wondering about your Teradata Account information just use this function to see your current account string.

• CURRENT_DATE: – Returns the current system date and it is same as the function DATE.

• CURRENT_TIME: - This function returns the current system time and current session ‘Time Zone’ displacement. This function is similar to the TIME function but with extra feature of Time Zone displacement.

• CURRENT_TIMESTAMP: - Returns the current system timestamp (including year, month and day) and current session Time Zone displacement.

• DATABASE: – If you are wondering how to find your current database name, use this function which returns the name of the default database for the current user.

• DATE: – As mentioned earlier, it does return the current date.


• SESSION: – Returns a number for the session the current user is in. Two sessions does not have the same number. If you want to identify your session, this is the function to use.

• TIME: – As mentioned, this function provides the current time based on a 24-hour day; mean to say for 4:00 pm, you would see 16:00:00.

• USER: – If you have forgotten your username after you have logged in, this command would come to your rescue. This one gives the user name of the current user.

1 comment

No ping yet

  1. Anurag says:

    Useful indeed. The commands look obvious but only after knowing them that they exist.

Leave a Reply

Your email address will not be published.

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>