title: Handle Lock Manually in SQL Server?
body: <p>I am new to SQL Server, but am having a fair knowledge of simple things like select/update/delete and other transaction. I am facing a dead lock scenario in my application. I have understood the scenario as many threads are parallel trying to run a set of update operations. Its is not a single update but a set of update operations. </p>
  
  <p>I have understood that this cannot be avoided in my application as many people want to do a update simultaneously. So I want to have a manual lock system. First the thread 1 should check if the manual lock is available and then start the transaction. Mean while if the second thread requests for the lock it should be busy and hence the second thread should wait. Once the first is completed the second should acquire the lock and start with the transaction.</p>
  
  <p>This is just a logic i have thought about. But I do not have any idea of how to do this in SQL Server. Are there any examples which can help me. Please let me know if you can give me some sample sql scripts or links that will be helpful for me. Thank you for your time and help.</p>