SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 5)
    Literal UInt64_0 (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
