You will see the full source code of the demo. You will see how:

1. Get Entities List from Database in GoLang and MongoDB
2. Find Entity by Primary Key in GoLang and MongoDB
3. Create New Document in GoLang and MongoDB
4. Update Document in GoLang and MongoDB
5. Delete Document in GoLang and MongoDB
6. Count Documents in GoLang and MongoDB
7. Equal Operator in GoLang and MongoDB
8. Not Equal Operator in GoLang and MongoDB
9. Less Than Operator in GoLang and MongoDB
10. Less Than or Equal Operator in GoLang and MongoDB
11. Greater Than Operator in GoLang and MongoDB
12. Greater Than or Equal Operator in GoLang and MongoDB
13. And Clause in GoLang and MongoDB
14. Or Clause in GoLang and MongoDB
15. Regex in GoLang and MongoDB
16. OrderBy in GoLang and MongoDB
17. Limit in GoLang and MongoDB
18. Sum in GoLang and MongoDB
19. Min in GoLang and MongoDB
20. Max in GoLang and MongoDB
21. Avg in GoLang and MongoDB
22. Group By in GoLang and MongoDB
23. Group By and Sort in GoLang and MongoDB
24. Group By and Having in GoLang and MongoDB

You also see the results after the demo with the illustrations.

You can also copy the code in this app and use it on your project.