“Unknown column in 'field list'”, but column does exist

Question

DROP TABLE IF EXISTS `transactions`;
CREATE TABLE `transactions` (
  `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
  `purchase_date` datetime DEFAULT NULL,
  PRIMAR         


        

Answer 1

Same error in a different scenario:

This also happens when you miss @ symbol for a variable.

SET @myVar1=1;  SELECT @myVar1;  -- GOOD, correctly prints:  1
SET @myVar1=1;  SELECT  myVar1;  -- BAD, prints:  Unknown column 'myVar1' in 'field list'