CreateQuery t1 (children 3)
 Identifier t1
 Storage definition (children 2)
  Function MergeTree (children 1)
   ExpressionList
  Identifier c
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectIntersectExceptQuery (children 2)
    SelectQuery (children 1)
     ExpressionList (children 1)
      Literal UInt64_1 (alias c)
    SelectWithUnionQuery (children 1)
     ExpressionList (children 2)
      SelectQuery (children 1)
       ExpressionList (children 1)
        Literal UInt64_1 (alias c)
      SelectQuery (children 1)
       ExpressionList (children 1)
        Literal UInt64_2 (alias c)
