Appending data to a MySQL database field that already has data in it

Question

I need to \"add\" data to a field that already contains data without erasing whats currently there. For example if the field contains HTML, I need to add additional HTML to

Answer 1

Append at the end of a field, separated with with a line break:

UPDATE Table SET Comment = CONCAT_WS(CHAR(10 USING UTF8), Comment, 'my comment.');

• CONCAT_WS() appends multiple strings separated by a given separator.
• CHAR(10, UTF8) is a line break.