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Fixed error #1947
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@ -64,7 +64,13 @@ DataTypePtr FieldToDataType::operator() (Array & x) const
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DataTypePtr res = getLeastSupertype(element_types);
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for (Field & elem : x)
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elem = convertFieldToType(elem, *res);
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{
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Field converted = convertFieldToType(elem, *res);
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/// Otherwise elem must be NaN (convertFieldToType cannot convert NaN and returns NULL instead).
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if (!converted.isNull())
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elem = converted;
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}
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return std::make_shared<DataTypeArray>(res);
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}
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