Comparing and counting two distinc rows from a single table

[caneddie]

Hey Everyone, I am fairly new to SQL and pulling out whatever little hair is left on my head. I have a data dump where we are trying count the "First Call Resolution" for tickets that an employee opens and closes himself. The company is using MS Access and I am working with a basic data dump from the ticketing system. I have already weeded out everything I don't need, but I'm having trouble trying to compare and count two rows in the same table. Here is an example of the info in the table ticket_number | agentID | activity | notesGLOB-1234 | tier1_A1 | OPENS | ticket openedy by tier1_A1 - BobGLOB-1234 | tier1_A1 | REMRK | helped client fix their stuffGLOB-1234 | tier1_A1 | CLOSE | ticket closed by tier1_A1 - BobGLOB-1235 | tier1_A2 | OPENS | ticket openedy by tier1_A1 - Chris GLOB-1235 | tier1_A2 | REMRK | Could not resolve issue, routing to tier 2GLOB-1234 | tier2_A2 | REMRK | Recevied ticket from tier1, fixed problem remotely, advised clientGLOB-1234 | tier2_B1 | CLOSE | ticket closed by tier2_A2 - Mike I want to be able to check the table to see how many ticket tier1 agents have resolved on their own. In order to do this, I just have to count the number of times that I have a row where ticket_number, agentID are the same, and where Activity = 'open' and activity = 'close'. I want to make the solution simple and elegant and try and do it within the same table. I guess one other option would be to create two separate views a then compare the two tables to each other? Please help me!!!Thanks in advance

[justsomeguy]

You could join the table with itself on your criteria, but it would also find tickets where another agent posted a response but didn't close the ticket. It wouldn't find only tickets where a single agent did everything, just tickets where the same agent opened and closed it.