SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 1)
    Function lowCardinalityKeys (children 1)
     ExpressionList (children 1)
      Identifier s
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier test
   Function equals (children 1)
    ExpressionList (children 2)
     Identifier client_name
     Literal \'client1\'
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier ALL
