How do I combine two UPDATE statements in one MySQL query?

Question

Greetings,

How would one go about performing two UPDATE statements in one query, for example:

UPDATE albums SET isFeatured = \'0\' WHERE isFeatured          


        

Answer 1

You can use CASE WHEN statement and remember to set original value where necessary (ELSE clause below) and order CASE conditions as required (in statement below isFeatured will be 0 if row having requested id also has isFeatured = 1, to change it swap WHEN clauses).

UPDATE albums 
SET isFeatured = CASE 
  WHEN isFeatured = '1' THEN '0' 
  WHEN id = '$id' THEN '1'
  ELSE isFeatured
END