CASE statement in SQLite query

Question

Why this query doesn\'t work? :( I tried to replace nested IF statement \"...SET lkey = IF(lkey >= 11, lkey - 5, IF(lkey > 5, lkey + 2,lkey))\"

UPDATE pages
SET          


        

Answer 1

The syntax is wrong in this clause (and similar ones)

    CASE lkey WHEN lkey > 5 THEN
        lkey + 2
    ELSE
        lkey
    END

It's either

    CASE WHEN [condition] THEN [expression] ELSE [expression] END

or

    CASE [expression] WHEN [value] THEN [expression] ELSE [expression] END

So in your case it would read:

    CASE WHEN lkey > 5 THEN
        lkey + 2
    ELSE
        lkey
    END

Check out the documentation (The CASE expression):

http://www.sqlite.org/lang_expr.html