AlterQuery  partslost_0 (children 2)
 ExpressionList (children 1)
  AlterCommand ADD_INDEX (children 1)
   Index (children 2)
    Identifier x
    Function tokenbf_v1 (children 1)
     ExpressionList (children 3)
      Literal UInt64_285000
      Literal UInt64_3
      Literal UInt64_12345
 Identifier partslost_0