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hi welcome to this sql tutorial video and today im going to show you how to add columns to existing tables on screen ive got a table called employees its already got data in lets imagine i need to add another column to store a different piece of data and its nice and easy the syntax is pretty simple and and the process generally is very very quick so if i do alter table and i specify my table i say add i dont need to put add column added like i just need to put add and then i need to give a name for my new column give it a data type and run that sql now if i run select on my table i can see ive got a new column called grade um similar syntax if i want to get rid of that so ive created that column and actually was the wrong table i needed a different table so i just say drop and now i need to put column column grade and i run that and the columns gone you can add more than one column at the same time so right now i dont have a grade column its just got um the standard the in