SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 4)
    Identifier table
    Identifier partition
    Identifier name
    Identifier rows
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.parts
   Function and (children 1)
    ExpressionList (children 3)
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier database
       Function currentDatabase (children 1)
        ExpressionList
     Identifier active
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier table
       Literal \'t_light\'
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier name
