SQL error

SQL error

1064: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near ‘’ at line 1

SELECT `id`, `d`, `k`, `l`, `s`, `t`, `aa`, `ab`, `ai`, `aj`, `aq`, `ar`, `ay`, `az`
FROM `index-kaart-2017`
WHERE id = 4 UNION ALL
SELECT `id`, `d`, `k`, `l`, `s`, `t`, `aa`, `ab`, `ai`, `aj`, `aq`, `ar`, `ay`, `az`
FROM `index-kaart-2017`
WHERE id = 7 UNION ALL
SELECT `id`, `d`, `k`, `l`, `s`, `t`, `aa`, `ab`, `ai`, `aj`, `aq`, `ar`, `ay`, `az`
FROM `index-kaart-2017`
WHERE id = 8 UNION ALL
SELECT `id`, `d`, `k`, `l`, `s`, `t`, `aa`, `ab`, `ai`, `aj`, `aq`, `ar`, `ay`, `az`
FROM `index-kaart-2017`
WHERE c =

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