If you have ever worked in Oracle databases, you might have across DUAL table. It’s considered to be system table (I guess) where you can do some operations, get some values like current date, time, etc. I don’t really remember other uses.
Anyways, moving on to Teradata, I thought of doing the same, i.e. pull current timestamp from system table. However, I never came across any DUAL table till now, instead I came to know that just doing the following will do the needful —
Now, here comes the hack for the day, my colleague asked me, whether its possible to convert timestamp into decimal format.
Trick 2 Transform..
I remembered doing some casting few months back. If you look at my previous tricks on Teradata SQL, you might remember too. So, this is how I do it —
SELECT CAST( SUBSTR( CAST(CURRENT_TIMESTAMP AS CHAR(19)),1,10) || SUBSTR( CAST(CURRENT_TIMESTAMP AS CHAR(19)),12,8) AS DECIMAL(18));
See ya later..