How to use Coalesce in MySQL - Stack Overflow A little help here I really don't understand how to use this coalesce in MySQL I have read all the pages in page 1 result of how to use coalsece in google result I know its meaning that it ret
When should I use ?? (nullish coalescing) vs || (logical OR)? The OR operator || uses the right value if left is falsy, while the nullish coalescing operator ?? uses the right value if left is null or undefined These operators are often used to provide a default value if the first one is missing But the OR operator || can be problematic if your left value might contain "" or 0 or false (because these are falsy values):
What is the difference between IFNULL and COALESCE in MySQL? COALESCE can work with two or more arguments (in fact, it can work with a single argument, but is pretty useless in this case: COALESCE(a) ≡ a) While MySQL's IFNULL and MSSQL's ISNULL are limited versions of COALESCE that can work with two arguments only