**Use case**

Please look at the next request:
```
SELECT * FROM numbers(1000000) WHERE number % 10000 == 0 and extremely_heavy_udf(number) == 'ok'
```
Now as far as all the functions are "eager" the heavy UDF will drastically reduce performance of the request. 

**Describe the solution you'd like**

As far as I understood after a conversation with @alexey-milovidov you have a "Short Circuit Processing" optimization for simple logical predicates (like conjunctive normal form) doing "lazy calculate" for heavy functions.

So it would be nice to assume all UDF functions as heavy-to-process (which is very close to the truth).

: in(in_fd_)
    , out(out_fd_)
    , err(err_fd_)
    , pid(pid_)
    , config(config_)
{
}
Poco::Logger * ShellCommand::getLogger()
{
    return &Poco::Logger::get("ShellCommand");
}
ShellCommand::~ShellCommand()