FlexLabs.EntityFrameworkCore.Upsert 10.0.0

Prefix Reserved
.NET 10.0 This package targets .NET 10.0. The package is compatible with this framework or higher. 
dotnet add package FlexLabs.EntityFrameworkCore.Upsert --version 10.0.0
                    


                    

                
NuGet\Install-Package FlexLabs.EntityFrameworkCore.Upsert -Version 10.0.0
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="FlexLabs.EntityFrameworkCore.Upsert" Version="10.0.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="FlexLabs.EntityFrameworkCore.Upsert" Version="10.0.0" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="FlexLabs.EntityFrameworkCore.Upsert" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add FlexLabs.EntityFrameworkCore.Upsert --version 10.0.0
                    


                    

                
#r "nuget: FlexLabs.EntityFrameworkCore.Upsert, 10.0.0"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package FlexLabs.EntityFrameworkCore.Upsert@10.0.0
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=FlexLabs.EntityFrameworkCore.Upsert&version=10.0.0
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=FlexLabs.EntityFrameworkCore.Upsert&version=10.0.0
                    


                            Install as a Cake Tool

FlexLabs.Upsert

Build status FlexLabs.EntityFrameworkCore.Upsert on NuGet

This library adds basic support for "Upsert" operations to EF Core.

Uses INSERT … ON CONFLICT DO UPDATE in PostgreSQL/Sqlite, MERGE in SqlServer & Oracle and INSERT INTO … ON DUPLICATE KEY UPDATE in MySQL.

Also supports injecting sql command runners to add support for other providers

A typical upsert command could look something like this:

DataContext.DailyVisits
    .Upsert(new DailyVisit
    {
        UserID = userID,
        Date = DateTime.UtcNow.Date,
        Visits = 1,
    })
    .On(v => new { v.UserID, v.Date })
    .WhenMatched(v => new DailyVisit
    {
        Visits = v.Visits + 1,
    })
    .RunAsync();

In this case, the upsert command will ensure that a new DailyVisit will be added to the database. If a visit with the same UserID and Date already exists, it will be updated by incrementing it's Visits value by 1.

Please read our Usage page for more examples

Product Compatible and additional computed target framework versions.
.NET net10.0 is compatible.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (16)

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Package Description

GitHub repositories (3)

Showing the top 3 popular GitHub repositories that depend on FlexLabs.EntityFrameworkCore.Upsert:

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Reaparr/Reaparr
Plex downloader that brings content from any server to yours!
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Secure, Modern, Fully-Featured, All-In-One Cross-Architecture & Cross-Platform DNS Server Using .NET 10
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Version Downloads Last Updated
10.0.0 81,096 2/26/2026
10.0.0-rc1 21,963 2/3/2026
10.0.0-beta2 42,214 12/23/2025
10.0.0-beta1 189,551 11/5/2025
9.103.0 40,333 1/21/2026
9.102.0 14,341 12/23/2025
9.101.0 77,725 11/4/2025
9.100.1 110,603 9/17/2025
9.100.0 59,188 8/30/2025
9.0.0 501,993 3/3/2025
8.1.2 953,662 11/28/2024
8.1.0 32,284 11/24/2024 8.1.0 is deprecated because it has critical bugs.
8.0.0 2,524,751 12/3/2023
7.0.0 1,232,690 12/18/2022
7.0.0-beta.2 6,810 11/22/2022
7.0.0-beta.1 586 11/16/2022
6.0.2 640,725 11/16/2022
6.0.1 5,205,438 1/2/2022
5.1.0 71,918 1/2/2022
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v10.0.0
+ Adding support for EF Core 10

v9.102.0
! Fix type mapping for ulong constants (Thanks to @ahmednfwela)
! Fix RunAndReturn methods returning stale tracked entity values (Thanks to @sdukehart-omnesoft)

v9.101.0
! Patching implicit conversions not being supported after last update (Thanks to @fortender)
! Patching query filters preventing from retrieving upserted entities (Thanks to @Lexiphan)

v9.100.0
+ Significant internal upgrade with a new expression parser (Thanks to @r-Larch)
+ Adding support for owned entities and owned JSON entities (Thanks to @r-Larch)
+ Adding option to exclude columns on auto-updates (Thanks to @B3RR10)

v9.0.0
+ Adding support for EF Core 9

v8.1.0
+ Adding initial support for Oracle DB! (Thanks to @dadyarri)
+ Adding test support for returning inserted objects (Thanks to @PhenX)
+ Adding support for upserting into views (ymmv)
! Patching argument count calculation (for max argument count handling)
! Patching null constant handling in the update condition

v8.0.0
+ Adding support for EF Core 8