For example, if my primary key is `a` and clustering columns are `b` and `c`.

Can I only use the following in where condition?

```
select * from table where a = 1 and b = 2 and c = 3

```

Or are there any other queries that I can use?

I want to use 

```
select * from table where a=1

```

and 

```
select * from table where a = 1 and b = 2 and c = 3 and d = 4

```

Is that possible?

If not, then how can I model my data to make this possible?