Question

I want to update a row in any case except an specific field should just be update if another one has some condition.

In this case an example is when i want to update an article. The articles table has 5 columns(id, caption, content, publishdate, published) that published is boolean.

Now i want an specific row to be update in any case but publishdate should be update just if published is true. I want it in one single query.

Is there a way to do such thing ?

edit
I want to check value of published in query, not in database. something like:

UPDATE articles SET (published AS b) = true, publishdate = (b==true? 'new date': b)

Answer 1

you can use inline IF statement. eg

UPDATE articles
SET publishedDate = IF(published = 1, 'new date HERE', publishedDate)
-- WHERE condition here

this assumes that 1 = true, if you store boolean as string then IF(published = 'true',...

UPDATE 1

-- assumes 0 = false, 1 = true
SET @status := 1;
SET @newDate := CURDATE();

UPDATE articles
SET publishedDate = IF(1 = @status, @newDate, publishedDate),
    published = @status
-- WHERE condition here