SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 5)
    Literal NULL (alias x)
    Function array (alias arr) (children 1)
     ExpressionList (children 1)
      Function if (children 1)
       ExpressionList (children 3)
        Function greater (children 1)
         ExpressionList (children 2)
          Identifier number
          Literal UInt64_1
        Literal NULL
        Identifier number
    Function tuple (alias t) (children 1)
     ExpressionList (children 1)
      Function arrayElement (children 1)
       ExpressionList (children 2)
        Identifier arr
        Literal UInt64_1
    Function in (children 1)
     ExpressionList (children 2)
      Identifier x
      Identifier t
    Function in (children 1)
     ExpressionList (children 2)
      Identifier x
      Identifier arr
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function numbers (children 1)
       ExpressionList (children 1)
        Literal UInt64_3
   Set
