Top 20 NuGet upsert Packages

Adds basic support for "Upsert" operations to EF Core. Uses `INSERT … ON CONFLICT DO UPDATE` in PostgreSQL/Sqlite, `MERGE` in SqlServer and `INSERT INTO … ON DUPLICATE KEY UPDATE` in MySQL. Also supports injecting sql command generators to add support for other providers
Bulk Data API/Tools for SQL Server databases. Easily perform bulk "upsert" operations on your database. Nifty helper utility for moving around large sets of data.
Pouchdb Upsert (pouchdb-upsert) binding library for Bridge.NET projects.
.Net Upsert for combined insert and update operations of strongly typed collections into SQL Server.
A simple upserter
lean mean SQL Server upsert machine
Create, Update, Upsert, Delete records in CRM by importing an excel file and defining KEY columns.