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UPDATE vn.travel t
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JOIN(SELECT t.id travelFk, d.awbFk
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FROM vn.dua d
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JOIN vn.duaEntry de ON de.duaFk = d.id
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JOIN vn.`entry` e ON e.id = de.entryFk
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JOIN vn.travel t ON t.id = e.travelFk
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GROUP BY t.id
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)sub ON sub.travelFk = t.id
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SET t.awbFk = sub.awbFk;
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