@Diego Berón I've seen this before, quite a while ago. This is a limitation from the MS SQL server and has nothing to do with Gorm. However in general doing an in-list with so many objects is a bad idea in general because you will end up with a slow and inefficient query. If you do some Google searching you'll find people have come across this and the solution will be it depends, on what you are exactly trying to query and if there is another way to get at that same data, like doing a subquery, also not the most efficient, but sometimes necessary. Chunking is another option, but then you might have to manually weave together results.