SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Asterisk
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function V_DELTA (children 1)
       ExpressionList (children 4)
        Function equals (children 1)
         ExpressionList (children 2)
          Identifier a1
          Literal UInt64_10
        Function equals (children 1)
         ExpressionList (children 2)
          Identifier a2
          Literal UInt64_50
        Function equals (children 1)
         ExpressionList (children 2)
          Identifier a3
          Literal UInt64_10
        Function equals (children 1)
         ExpressionList (children 2)
          Identifier a4
          Literal UInt64_40
