mySQL UPDATE query returns “0 rows affected”

Question

I have this query:

UPDATE phonecalls 
   SET Called = \"Yes\" 
 WHERE PhoneNumber = \"999 29-4655\"

My table is phonecalls, I

Answer 1

In my case, I was trying to update a column of text to correct a truncation problem with it. Trying to update to the correct text was yielding 0 rows updated because the text in the row wasn't changing.

Once I extended the column in the table structure to accommodate for the correct number of characters, I was able to see the desired results.