Works great for a single row And, as clever as it is, updating by exception error just doesn't sit right with me SQL Server I have a table consisting of fields with a primary key auto-increment.
I need to be able to duplicate via a stored procedure a specific row in the table identified by primary key value i. What is the best way to do this I have had some issues with this is there another method?
Please not that other users may try and access the orginal record during this insert process. Can you give me example syntax and comments. Thank You! Woa I never see something so ugly! Is anyone has a good solution, simple? Why its bad to test before if data already exists? I'm glad technology has advanced this much since then The initial update would not lock any rows if the row didn't exist in the first place.
If you are going to do a lot of updating and it will be rare that the record does not exist, it is going to be best to try updating first and if no records are updated, insert one. This is faster in this scenario because the vast majority of the time it is just a single simple update.
If you do this from your calling code rather than from SQL though it is generally better to do everything in SQL , the insert statement would not even be compiled if the update worked. But it seems like it's not doing what I want as it's inserting a new row even if it's already there. Also I have a procedure which contains several such statements and I m facing the deadlock.
RedDK - yes it might be, but with a different question as suggested by one of the members, in response to my previous question, member wanted me to post another question in specific to Stored procedure, which I have no idea about, added my source code so that one canunderstand what I am actually looking fwd to.
I could be wrong about this but isn't it possible to just a add tag to the OP by clicking on "Improve question"? Not arguing, just a suggestion for next time?
I will sure keep that in mind, I am all new here on Code Project, so have not much knowledge on stuff, Sorry for my ignorance and thank you for the advice :. Top Rated Most Recent. Accept Solution Reject Solution. This is a rough sample of what you require. Posted Mar am Pheonyx. Maciej Los Mar pm. It should works, my 5! JagzKrish 8-Apr pm. Pheonyx: This does the Job for me perfectly fine. However, challenging part is, I want the Application to throw a pop up or message box, "Data already exists do you want to update?
Any solution for this Lame man? Pheonyx 9-Apr am. JagzKrish 9-Apr pm. Kindly help, I am a NooB Pheonyx 9-Apr pm. You can't throw a message box from a stored procedure.
You need to do some logic in your main program that checks to see if the entry exists. I am assuming your table has a unique primary key column. But without knowing your actual table structure and the stored procedure you have produced so far it is quote hard to advise. Pheonyx: Here is the stored procedure that I have used. Pheonyx Apr am.
In your table, how is the column DPSNum configured? It appears to be a char 10 from what you have shown. Is it the Primary Key column of the table? Is it guaranteed to be unique? JagzKrish Apr am. Yes that is correct. If that is the case, then you can take two approaches to checking if data exists. How you go about this depends alot on your current program design and what is easier. In the above example, we are executing the procedure by providing existing email and contact values.
Till now, we have discussed how to create a stored procedure to check the existence of a record using one or 2 fields. Now, we will learn to create a stored procedure using multiple fields to check the existence of a record and perform insert or update operations.
For this demonstration, we are going to use the following car inventory table that contains information related to old cars and their price. Now, we will try to create a stored procedure that will update the price of the car based upon the existence in the table. For this implementation, we have created the following stored procedure. In the above script, we have declared 5 input parameters and we are checking the existence of the record using multiple parameters.
After the execution, the SQL procedure will either update the price of the car or insert the record in the table. Till now, we were only using input parameters in the stored procedure for the implementation.
And in this case, we can use this output parameter to determine whether an insert or update statement is executed. For this, we have created the following stored procedure. In the above script, first, we have declared a variable that can store the value of the output parameter.
And pass the variable as a value for the output parameter. After execution, we will use the variable value to determine which statement is executed by the stored procedure. Here is the execution of the above example. So, in this tutorial, we learn about SQL Server stored procedure if exists update else insert operation. And we also demonstrated multiple examples for this task.
Here is the list of topics that we have discussed.
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