SQL UPPER()by Pradeep Raturi2 CommentsSQL Basics, String FunctionsSQL UPPER() function converts all the characters in a string into uppercase. 1,168 total views, 2 views today Share this:Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on WhatsApp (Opens in new window)Click to share on Reddit (Opens in new window)