SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 1)
    Identifier metric
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.metrics
   Function like (children 1)
    ExpressionList (children 2)
     Identifier metric
     Literal \'%MMap%\'
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier metric