For example, if I use UInt8 constant for if condition then only one branch is evaluated:
```sql
SELECT if(1, 'success', throwIf(1, 'Executing FALSE branch'))

┌─'success'─┐
│ success   │
└───────────┘

1 rows in set. Elapsed: 0.003 sec.
```

But if I use some constant expression, then both branches are evaluated:
```sql
SELECT if(empty(''), 'success', throwIf(1, 'Executing FALSE branch'))

0 rows in set. Elapsed: 0.003 sec.

Received exception from server (version 21.12.2):
Code: 395. DB::Exception: Received from localhost:9000. DB::Exception: Executing FALSE branch: While processing if(empty(''), 'success', throwIf(1, 'Executing FALSE branch')). (FUNCTION_THROW_IF_VALUE_IS_NON_ZERO)
```
{
        throw Exception("updateHashFast is not implemented for " + getName(), ErrorCodes::NOT_IMPLEMENTED);
    }
    void popBack(size_t) override
    {
        throw Exception("popBack is not implemented for " + getName(), ErrorCodes::NOT_IMPLEMENTED);
    }
    int compareAt(size_t, size_t, const IColumn &, int) const override
    {
        throw Exception("compareAt is not implemented for " + getName(), ErrorCodes::NOT_IMPLEMENTED);
    }
    void compareColumn(const IColumn &, size_t, PaddedPODArray<UInt64> *, PaddedPODArray<Int8> &, int, int) const override
    {
        throw Exception("compareColumn is not implemented for " + getName(), ErrorCodes::NOT_IMPLEMENTED);
    }
    bool hasEqualValues() const override
    {
        throw Exception("hasEqualValues is not implemented for " + getName(), ErrorCodes::NOT_IMPLEMENTED);
    }
    void getPermutation(bool, size_t, int, Permutation &) const override
    {
        throw Exception("getPermutation is not implemented for " + getName(), ErrorCodes::NOT_IMPLEMENTED);
    }
    void updatePermutation(bool, size_t, int, Permutation &, EqualRanges &) const override
    {
        throw Exception("updatePermutation is not implemented for " + getName(), ErrorCodes::NOT_IMPLEMENTED);
    }
    void gather(ColumnGathererStream &) override