Function sanitizeBlock

src/Interpreters/ExpressionAnalyzer.cpp:158–178

}

bool sanitizeBlock(Block & block, bool throw_if_cannot_create_column)
{
    for (auto & col : block)
    {
        if (!col.column)
        {
            if (isNotCreatable(col.type->getTypeId()))
            {
                if (throw_if_cannot_create_column)
                    throw Exception(ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT, "Cannot create column of type {}", col.type->getName());

                return false;
            }

            col.column = col.type->createColumn();
        }
        else if (!col.column->empty())
            col.column = col.column->cloneEmpty();
    }
    return true;
}

ExpressionAnalyzerData::ExpressionAnalyzerData() = default;