SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 4)
    Identifier d
    Identifier a
    Identifier a1
    Identifier b
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier prewhere
   Function like (children 1)
    ExpressionList (children 2)
     Identifier a
     Literal \'hello%\'
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier a1
