Yeah… With latest Tytung r9 beta kernel, you can record phone call conversation now (2-way in call recording). Currently, there are 3 NAND Android ROMs that I tried which is using Tytung r9 beta kernel. And I managed to record my calls with BOYPPC-SHIFTPDA GINGER HoneyComB. Besides Tytung r9 beta kernel, all you need is a call recorder application by XDA Developer, skvalex.
CallRecorder
Want to record every phone call? You can do so by using ACR ~ Auto Call Recorder for Windows Mobile (Note – Telephone tapping is not legal in all countries/states (link)). ACR is working out from the box on ASUS P835, HTC Touch HD, HTC Touch Diamond 2, Samsung Omnia i900, Samsung Omnia 2 and more…
Auto Call Recorder (ACR)
Finally, the wait is over. 2-way in call recording is possible on HTC HD2 now. Since day 1… When you call or receive, you cannot record other’s voice clearly unless you enable hands-free mode. Their voice is too soft to be heard when playback. Thanks to 4pda.ru member RekGRpth. Here is the solution to enable 2-way in call recording on HTC HD2.
Record voice conversation
Hmm… I have been using SQL for quite some time. But I do not know how to compare 2 tables to find out the different records. For example, I have 2 tables which are table A and table B. Both of them have some similar records. But I want to filter out the different data only. How can I do so? I searched online and discovered the method to do so. It is located in Microsoft SQL Server 2005 Books Online. All we need to do is use EXCEPT function in SQL.
Query to compare 2 tables to find the different
SELECT * FROM TableA EXCEPT SELECT * FROM TableB;
Query to compare 2 tables to find the matches
SELECT * FROM TableA INTERSECT SELECT * FROM TableB;
Hope this will help you too. 
