[Pxtl]

I do it in UPDATES

    UPDATE FOO
    SET BAR = 1
    ,   BAZ = 2
    ,   QUUX = 3

I like it that way. Makes it clear the relationship between the continuing lines and their parents. Just the natural extension of

    WHERE ALICE = 1
    AND BOB =2
    AND CHARLIE = 3

[dozenal]

That seems backwards to me. I put the operator on the previous line so I know the expression has more parts coming.

In your example, I don't know SET BAR = 1 isn't the end until I read the next line.

[Pxtl]

Different strokes I guess. I've tried both ways and I've found this one pleasant for scanning down an expression.

I mean, it's kind of the SQL analogue to the

  MyObject
  .Child
  .Grandchild
  .ItsMethod(stuff)
  .HeyThatReturnedAnotherObject()
  .MoreObject(moreStuff)