SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 4)
    Identifier a2
    Identifier b2
    Identifier a3
    Identifier b3
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier tab2
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier tab3
     TableJoin (children 1)
      Function or (children 1)
       ExpressionList (children 2)
        Function and (children 1)
         ExpressionList (children 2)
          Function equals (children 1)
           ExpressionList (children 2)
            Identifier a2
            Identifier a3
          Function equals (children 1)
           ExpressionList (children 2)
            Function plus (children 1)
             ExpressionList (children 2)
              Identifier a2
              Literal UInt64_1
            Function plus (children 1)
             ExpressionList (children 2)
              Identifier b3
              Literal UInt64_0
        Function and (children 1)
         ExpressionList (children 2)
          Function equals (children 1)
           ExpressionList (children 2)
            Identifier b2
            Identifier b3
          Function equals (children 1)
           ExpressionList (children 2)
            Function plus (children 1)
             ExpressionList (children 2)
              Identifier a2
              Literal UInt64_1
            Function plus (children 1)
             ExpressionList (children 2)
              Identifier b3
              Literal UInt64_0
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier ALL