SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function sum (children 1)
     ExpressionList (children 1)
      Identifier a
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier t
   Function and (children 1)
    ExpressionList (children 2)
     Function in (children 1)
      ExpressionList (children 2)
       Identifier a
       Literal Tuple_(UInt64_0, UInt64_3)
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier b
       Literal UInt64_0
