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Fixed error #1947

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This commit is contained in:
Alexey Milovidov 2018-02-28 07:14:18 +03:00
parent ca879f368b
commit c4fdfbf287
1 changed files with 7 additions and 1 deletions
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8
dbms/src/DataTypes/FieldToDataType.cpp
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@ -64,7 +64,13 @@ DataTypePtr FieldToDataType::operator() (Array & x) const
DataTypePtr res = getLeastSupertype(element_types); DataTypePtr res = getLeastSupertype(element_types);
for (Field & elem : x) for (Field & elem : x)
elem = convertFieldToType(elem, *res); {
Field converted = convertFieldToType(elem, *res);
/// Otherwise elem must be NaN (convertFieldToType cannot convert NaN and returns NULL instead).
if (!converted.isNull())
elem = converted;
}
return std::make_shared<DataTypeArray>(res); return std::make_shared<DataTypeArray>(res);
} }