sql server - How to solve insert/delete deadlock on non-clustered index? -

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I have found a deadlock problem and I came to know that this is due to two stored procedures called different threads (2 named web services). ).

  1. Merge which inserts data in the X table.
  2. Delete that deletes data in the X table.

In addition to this, I got the result which happened to me in the non-unique and non-clustered index of X Table. Do you have any ideas to solve this problem?

From Update

, I think the error is due to the following statements.

  • In the inclusion statement, the ID (clustering index) and then the non-cluster index is found.
  • In the deleted statement, it is non-clustered before the id.

Therefore, I have to select the statement of deletion as the following statement, to select the ID. 

  SELECT id FROM X with (NOLOCK) WHERE [condition]

PS Both stored procedures are called in the transaction.

Thanks,

You must see ... you mention the transaction; Is there a level of separation? One thing to try is to signal any query that connects (UPDLOCK) that you use to line (or check the existence); You will take a lock lock (instead of reading locks) from the beginning.

When elections are fought, then it should be blocked (very brief) instead of a deadlock.


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