Multiple choice technology programming languages Which of the following is not a character function LTRIM SUBSTR CONCAT TRUNC Reveal answer Fill a bubble to check yourself D Correct answer Explanation LTRIM, SUBSTR, and CONCAT are all character/string manipulation functions in SQL. TRUNC is a numeric function that truncates numbers to a specified decimal place - it is NOT a character function. For example, TRUNC(15.78, 1) returns 15.7.