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Editorial Team
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Asked: 2026-05-20T01:08:08+00:00

Why this query doesn’t work? :( I tried to replace nested IF statement …SET

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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 lkey = CASE lkey WHEN lkey >= 11 THEN
        lkey - 5
    ELSE
        CASE lkey WHEN lkey > 5 THEN
            lkey + 2
        ELSE
            lkey
        END
    END,
    rkey = CASE lkey WHEN lkey >= 11 THEN
        rkey - 5
    ELSE
        CASE rkey WHEN rkey < 11 THEN
            rkey + 2
        ELSE
            rkey
        END
    END
WHERE rkey > 5 AND
    lkey < 12;
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1 Answer

  1. Editorial Team

    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

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