Advanced filter logic - ANDs before ORs?

[Anonymous]

Marketo says that it requires you use ANDs before ORs:

Use Advanced Filters in a Smart List - Marketo Docs - Product Docs

Is this correct? I feel like my smart lists have worked even if I put ORs in the beginning. Or is this a speed issue or am I misinterpreting this doc?

Example:

(1 or 2) and 3

vs.

1 and (2 or 3)

and what about:

1 and (2 or 3) and (4 or 5)

Thanks!

[Justin_Norris1]

Likewise it works for me either way. As long as you bracket them properly.

[Josh_Hill13 · Accepted solution]

I also have had no problems with different situations or nested conditions.

Now, if you want the list to work more efficiently, then you may want to order the logic as well as place the most important filters at the top.

[Delinda_Tinkey1]

That's interesting. They seem to work for me either way as well.