Perhaps you can use log shipping or replication to set up a reporting database, on a different server. This works fine, as long as every column isnt nullable. Has anyone been diagnosed with PTSD and been able to get a first class medical? Making statements based on opinion; back them up with references or personal experience. How are engines numbered on Starship and Super Heavy? Simple deform modifier is deforming my object. What's the best way to handle updates only when a value has changed? What were the most popular text editors for MS-DOS in the 1980s? And you're working in a language that makes it easy to write setters and getters. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Originally I just set the value without checking anything and updated the object, but of course sometimes the new values wouldn't be valid, and other times they would be identical to existing values, so running an update was a waste of system resources, and frankly a rather slow process. Use a third-party solution, such as linked in the comments. Are they coming from a temporary table? Anyway, the result when SaveChanges is called is the following SQL: So you can clearly see, Entity Framework has not attempted to update any other fields - just the Dob field. How do the interferometers on the drag-free satellite LISA receive power without altering their geodesic trajectory? Episode about a group who book passage on a space ship controlled by an AI, who turns out to be a human who can't leave his ship? Your answer could be improved with additional supporting information. That portion could be added, but you would first need to show exactly where you are getting your dataset that you are merging into MyTable. And then you will need to add where predicates for every column in the base table. So I can't use ref parameters (I already tried going that route). Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, Create View Model.. only add the fields you want.. Set values, Even I create View Model; the same problem still exist while updating to to my table "Person". Which was the first Sci-Fi story to predict obnoxious "robo calls"? is it possible to get the row count that I need somehow? Complete Serialization. Why not use tracking and rely on Automatic Detect changes as described in. 565), Improving the copy in the close modal and post notices - 2023 edition, New blog post from our CEO Prashanth: Community is the future of AI, Is Information in sys.dm_db_index_usage_stats reliable. @RobertHarvey, I see nothing wrong with either. Why does the narrative change back and forth between "Isabella" and "Mrs. John Knightley" to refer to Emma's sister? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. The problem here is that when you map a view model into an entity object, all of the values get overwritten. Why refined oil is cheaper than cold press oil? By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. You tuck it all away in your VM so it does not litter your main code, and this way you can cater for specific needs (i.e. Which reverse polarity protection is better and why? These results are similar to where the pay gap stood in 2002, when women earned 80% as much as men. How can I do 'insert if not exists' in MySQL? Because of those complexities, it doesn't usually make sense to do this kind of row-by-row, field-by-field comparison as you're doing the updates.
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sql update only if data has changed