SQL LEN()by Pradeep RaturiSQL Basics, String FunctionsSQL LEN() function is used to count the number or length of character in given string. It returns integer value always and null for empty string. 2,091 total views, 4 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)