Function getTypesFromArgument

src/TableFunctions/TableFunctionValues.cpp:75–82

}

DataTypes getTypesFromArgument(const ASTPtr & arg, ContextPtr context)
{
    const auto & [value_field, value_type_ptr] = evaluateConstantExpression(arg, context);
    if (const DataTypeTuple * type_tuple = typeid_cast<const DataTypeTuple *>(value_type_ptr.get()))
        return type_tuple->getElements();

    return {value_type_ptr};
}

/* values(structure, values...) - creates a temporary storage filling columns with values
 * values is case-insensitive table function.