title: add identical data to one column for ALL rows (mySQL) via phpMyAdmin
body: <p>I am creating my first (!) database, and I have run into an issue that I cannot seem to locate the answer for. </p>
  
  <p>I have put an "added on" field in a table (among other things ofc), and since I'm the one adding it, I want to put the same date in the entire column. The idea is that if there is a new item added at a later date, it will have that date, but the data initially populated should all have the same date. </p>
  
  <p>How? Please don't tell me one row at a time....</p>