how to exclude dates between dates that already exists

[gradiske]

Sorry guys, i was trying to edit with my smartphone yesterday and something went wrong =/

[gradiske]

Ajay, now i've got another situation. Using your example, sometimes this occurs:

userid	start_Date	final_Date	flag_delete	audience
35	20/06/2013	30/06/2013	N	0,36666666666667
35	22/07/2013	31/07/2013	N	0,33333333333333
35	22/07/2013	09/11/2013	N	3,7
35	02/09/2013	01/10/2013	Y	1
35	10/11/2013	03/12/2013	N	0,8

Note that the row n2 dates are between the row n3. Assuming that peek() are getting only the previous record, how can i handle that?