cancel
Showing results for 
Search instead for 
Did you mean: 
Data Engineering
cancel
Showing results for 
Search instead for 
Did you mean: 

Forum Posts

lizou
by Contributor II
  • 924 Views
  • 2 replies
  • 2 kudos

Merge into and data loss

I have a delta table with 20 M rows, Ther table is being updated dozens of times per day. The merge into is used, and the merge works fine for 1 year. But recently I begin notice some of data is deleted from merge into without delete specified. Mer...

  • 924 Views
  • 2 replies
  • 2 kudos
Latest Reply
lizou
Contributor II
  • 2 kudos

I can't reproduce the issue anymore. for now, I am going to limit the number of merge into commands as intermediate data transformation does not need versioning history. I am going to try to use combined views for each step, and do a one-time merge i...

  • 2 kudos
1 More Replies
Labels