Ef core bulk insert transaction. For inserts, it's still necessary to go throug.

Ef core bulk insert transaction Primary keys are defined in DbContext: Jun 14, 2025 · While querying allows you to read data from the database, saving data means adding new entities to the database, removing entities, or modifying the properties of existing entities in some way. Dec 3, 2024 · Learn how to perform bulk inserts with EF Core, from basic methods like Add and AddRange to advanced options using BulkExtensions and raw SQL. When you call the SaveChanges() or SaveChangesAsync() method, the EF Core Provider automatically detects any changes made However, since Entity Framework Core still does not provide efficient bulk data insertion, I upgraded this open-source project to . About These libraries extend Entity Framework Core by a few features to make it easier to work with EF and for easier integration testing or to get more performance in some special cases. I can read and merge 150,000 rows in about 20 Entity Framework Core Bulk Batch Extensions in . Multiple SaveChanges() calls create separate transactions, perform CRUD operations and then commit each transaction. But I have a requirement of rolling back the transaction while exception condition while performing bulk insert. Join 5,000+ satisfied customers who have trusted our library since 2014. 0) Performance Improvement for Owned and Shadow values (v7. 0+ Entity Framework Extensions extends your DbContext with high-performance bulk operations: BulkDelete, BulkFetch, BulkInsert, BulkMerge, BulkSaveChanges, BulkSync, BulkUpdate, Fetch, FromSqlQuery, DeleteFromQuery, InsertFromQuery, UpdateFromQuery, QueryToCsvFile, SqlQueryToCsvFile Aug 13, 2024 · Newsletter Sponsors EF Core is too slow? Discover how you can easily insert 14x faster (reducing saving time by 94%). Extensions is a popular library that extends the functionality of EF Core. For EF Core: 8-10. As a solution you could opt to drop Entity Framework altogether and revert to something like a native SQL Bulk Insert command, but what if you need to be doing some processing in code on the record before the import happens? ExecuteUpdate allows us to write a query and run a bulk update operation on the entities matching that query. If you have a lot of entities to insert it is advisable to batch them. Net for Insert Update Delete Read (CRUD), Truncate and SaveChanges operations on SQL Server, PostgreSQL, MySQL, SQLite, Oracl Jan 25, 2024 · In Entity Framework 7 what would be the best way to do batchInsert to a table which is mapped using entity framework but I want to make sure that this is one transaction so either all objects are inserted or none? THanks for hints! Feb 19, 2024 · I'm currently working on an enterprise project that requires some logic for bulk functionalities using Entity Framework. Learn more Sponsor my newsletter to reach 17,000 Nov 30, 2022 · Bulk Operations with Entity Framework Core 7. My existing code uses SqlBulkCopy () and "IGNORE_DUP_KEY = ON", all is well with duplicates. Learn how to use the Bulk Merge (Upsert – add or update) method from Entity Framework Extensions to efficiently merge entities in your database. BULK INSERT refers to a very specific way of inserting rows to a single table with minimal logging (instead of logging individual rows, only entire data pages are logged). In this blog post, we'll explore how to perform bulk data insertion using Entity Framework in a C# application. I have 2 Database Entities public partial class Entity1 { public int ID { get; set; } Sep 20, 2021 · EF Core has no BulkInsert. Batching minimizes roundtrips, enhancing performance for bulk updates and Transaction in Entity Framework Here you will learn about the transactions in EF 6. Feb 21, 2021 · Since I wanted to insert data that may already have been present, and EF Core does not provide a built-in way to do that, I had to query non-existing rows first and then insert. 0 introduced ExecuteUpdate and ExecuteDelete, which are ways of updating and deleting database rows without passing through change tracking. Apr 23, 2020 · EF Bulk Extensions is really slow for me, but why? I have a C# console app on . You can insert, update, or delete data within your application and persist those changes to MongoDB by using the SaveChanges() or SaveChangesAsync() method. 0 and Entity Framework Core v6. Oct 7, 2021 · I have things set to LogLevel. May 26, 2017 · I am trying to bulk update records using Entity Framework. Sep 27, 2023 · Hi, I am creating Temp Table and inserting data with EF BulkInsert , then I use that temp table in the dynamic script. If you mine a property list you can make (2) and (3) generic. I have tried Entity Framework. Performing Bulk Insert Operations using Entity Framework Core Extension The Z. Contribute to mtanneryd/ef-bulk-operations development by creating an account on GitHub. bulkextensions library, but I didn't get the how-to insert the base and child entity when a Foreign key relationships exist based on documentation: Through the year, multiple improvements have been made to our EF Core Bulk Insert method and also other BulkExtensions methods such as: Major IncludeGraph revamp (better performance with less memory usage) (v7. 13, trying to reproduce the following behaviour explained in the docs: using (var transaction = context. I ran into a scenario where I have to create a DB and populate it with processed/calcu Aug 9, 2021 · I have an application which runs multiple threads to insert data into a SQL Server 2017 database table using EF Core 5. Also you may want to dispose and recreate the DbContext on each batch so that it's not using too much memory. Latest version is using EF Core 8 and targeting . It includes reverse engineering of DbContext and entity classes from existing databases and SQL Server DACPACs, and model visualizations and diagrams. May 10, 2011 · Here is a performance comparison between using Entity Framework and using SqlBulkCopy class on a realistic example: How to Bulk Insert Complex Objects into SQL Server Database Nov 11, 2025 · Learn how to use Bulk Extensions in EF Core to boost your CRUD operations performance. Table-Valued Parameters was a guiding factor. Learn how to use the Bulk Synchronize method (Add, Update, Delete) from Entity Framework Extensions to efficiently sync your entities with the database. When you execute another such operation a new transaction is Jun 2, 2022 · Daily Knowledge Drop When inserting data into a table using Entity Framework Core (EF Core), by default, if three or less records are being inserted, separate SQL INSERT statements will be used. But this question is different. I am switching to code first using EF Core with Zzz Projects Entity Framework Extensions. NET, it's tempting to use foreach loops or raw SQL to insert records. I got the performance boost as expected. For bulk inserts I use AddRange(listOfNewEntitities). Do NOT use EF for that - bulk insert ETL is not what Object Relational Mappers are made for and a lot of design decisions are not productive for that. Jul 4, 2021 · Using EFCore. Entity Framework Core (EF Core) supports two fundamental approaches for saving data to the database. The current implementation is that it takes the objects to insert, puts them in an in-memory queue, and then a background process inserts all items into the database one by one Bulk Insert, Update and Delete in Entity Framework In this article, I am going to discuss Bulk Insert, Update, and Delete in Entity Framework with Examples. 7. 1) Removed Newtonsoft. Learn how to use the EF Core Bulk Update method from Entity Framework Extensions to efficiently update thousands of entities in your database. This latter option enables you to perform more than one bulk copy operation within the same transaction, as well as perform other database operations (such as inserts, updates, and deletes) while still being able to commit or roll back the entire transaction. NET applications, designed to simplify database operations. Why did I develop this feature? The AddRange () method can be used to batch insert data in Entity Framework Core. The api is called around 50-100 times a minute. -Batch ops (chunk-oriented processing): Update, Delete - Deprecated from EF8 (v7+ has native Execute-Up/Del). 1 with one to one relationships. The following example demonstrates this Jun 22, 2025 · In Entity Framework, when you call SaveChanges () to insert, delete, or update data to the database, the entity framework will wrap that operation in a transaction. Be careful, when choosing a bulk insert library. Sep 30, 2025 · Tools EF Core Power Tools EF Core Power Tools is a Visual Studio extension that exposes various EF Core design-time tasks in a simple user interface. When you call SaveChanges to insert, delete, or update data to the database, then entity framework core will wrap that operation in a transaction. Construct a MERGE statement. BulkExtensions lib version 6. I have code nearly identical to the sample code under "SetOutputIdent Apr 21, 2017 · The IQueryable. Jun 24, 2013 · Bulk insert data into it -- Entity Framework Extended mentioned above would need to be tweaked to support the temp table name but otherwise is on the right track -- or roll a bit of code and use SqlBulkCopy. I'm trying to use bulkinsert from EFCore. All you need to do is adding Bulk before SaveChanges and everything works as expected. It doesn't even make sense to talk about objects/graphs and BULK INSERT in the same sentence. However, if the connection is dropped while the transaction is being committed the resulting state of the transaction is unknown. I've found something else. 21. Öncelikle çalışacağımız Database, Northwind database'i olacaktır. Supports all 4 major databases: - SQLServer (or SqlAzure) under the hood uses SqlBulkCopy for Insert, Update Nov 26, 2022 · EF Core is too slow? Discover how you can easily insert 14x faster (reducing saving time by 94%). Rerun the transaction. select * from @p0. 0 Entity Framework tracks all the entity changes and applies those changes to the database one by one when the SaveChanges() method is called. 1 project, connecting to a relatively old SQL Server 2005 instance. BulkExtensions version 3. The api takes a record as input, and inserts it into the database as is. Sick of staying up late firefighting deployments? Reclaim your nights with a database that Sep 15, 2021 · Bulk copy operations can be performed as isolated operations or as part of a multiple step transaction. in a previous blog post , I showed you how to use PostgreSQL in C# with Npgsql, Dapper, and Entity Framework Core. Below is an example of a Bulk Insert benchmark on SQL Server, comparing EF Core SaveChanges vs Entity Framework Extensions BulkInsert. Disclaimer: I'm the owner of Entity Framework Extensions This library allows you to perform all bulk operations you need for your scenarios: Bulk SaveChanges Bulk Insert Bulk Mar 7, 2023 · Disclaimer: This blog post was written by a protein-based intelligence. Bulk operations for Entity Framework 6. Feb 13, 2019 · The . By default, a bulk copy Jun 29, 2023 · An exception has occurred during data insertion, the message returned from the provider is: Bulk Insert with another outstanding result set should be run with XACT_ABORT on. May 8, 2023 · Performance guide for efficient updating using Entity Framework Core Apr 26, 2023 · In this article, we will review multiple ways of performing fast inserts of bulk data into a database using the Entity Framework (EF for short). 000, 10. 000, 100. I notice that when I insert records through my endpoint that it does a series of single insert statements instead of the expected (VALUES (<row1 values>),(<row2 values>)) format. By default, it uses the most efficient SQL because it doesn’t return any values—unless you explicitly ask for them. 18. Feb 4, 2023 · EF Core is too slow? Discover how you can easily insert 14x faster (reducing saving time by 94%). 0. But in Entity Framework Core (EF Core), there's a better way — efficient, clean, and scalable. I have just migrated to Entity Framework Core. 3) Added support to TPC (v7 Jun 18, 2025 · In Entity Framework 6, when you call SaveChanges () to insert, delete, or update data to the database, then entity framework will wrap that operation in a transaction. IncludeGraph option allows you to INSERT/UPDATE/MERGE entities by including the child entities graph. The C# code for inserting the domain model entities using EF Core 5 is as fol Mar 24, 2025 · Entity Framework Core 7 introduced two powerful methods for bulk operations: **ExecuteUpdateAsync** and **ExecuteDeleteAsync**. Or at least to understand how much it’s going to hurt. Any pointer Dec 29, 2021 · As exception states your table has some triggers or constraints and table with those requires Alter permission for direct bulkcopy into it. Bulk data support for the EntityFramework 6. This method will generate SQL that can be included in a raw SQL query to perform a bulk update of records identified by that query. For inserts, it's still necessary to go throug Dec 8, 2019 · I have for a long time used SqlBulkCopy with Entity Framework. 100. In the Database, I have two tables created by code first EF Core 6 into which I need to insert this data from Excel. Upon d Elevate your Entity Framework Core strategies with advanced techniques in bulk updates and deletions. This guide shows how to handle bulk inserts in EF Core the right way — especially when inserting hundreds or thousands of records. Net for Insert Update Delete Read (CRUD), Truncate and SaveChanges operations on SQL Server, PostgreSQL, MySQL, SQLite, Oracl Feb 3, 2021 · I'm using EFCore. Feb 2, 2022 · I am already using transactions inside my repository functions in some cases because I sometimes need to insert data into two tables at once and I want the whole operation to fail if one of the ins I'm using efcore. Entity Framework “classic” was introduced in 2008, was superseded nearly a decade later by EF Core, and continues to add significant feature additions and performance improvements today. x & EF Core. Give it a try and see the difference! Dec 22, 2013 · I think context bloat was causing us some significant pain on a bulk insert operation using EF Core 3. How can I use Bulk Copy with two related tables? Sample excel: Here… Apr 1, 2021 · What EF does by default In all versions of Entity Framework, whenever you execute SaveChanges () to insert, update or delete on the database the framework will wrap that operation in a transaction. Core. I am still waiting for my transaction to commit, but the preliminary results in the log seem to indicate a significant performance increase over single context with AutoDetect enabled. EF Core Bulk Insert with Entity Framework Extensions The BulkInsert method from Entity Framework Extensions dramatically improves performance compared to SaveChanges when inserting multiple entities. Because of the wide adherence to both older and newer EF Nov 11, 2025 · Bulk Insert Optimized with Entity Framework Extensions Instantly maximize your insert performance in EF Core 10 The BulkInsertOptimized method is a unique feature from Entity Framework Extensions. I don't have the numbers to hand but I know this Performance of bcp/BULK INSERT vs. To get optimal performance when inserting or updating data, ensure that you do the following: Use a transaction. 000 records. EntityFrameworkCore extensions: -Bulk operations (Insert, Update, Delete, Read, Upsert, Sync, SaveChanges) -Batch ops (Delete, Update) and Truncate. Discover how to save entities faster and by using less memory. Mar 31, 2024 · I'm using below extension function to Upsert data with EF Core with EFCore. Mar 6, 2024 · A performance benchmark comparing traditional EF Core methods to bulk operations demonstrates the substantial performance gains achieved through EF Core 8’s enhanced capabilities. BulkExtensions Extension with Examples. 0) Added QueryHint option for SQL Server (v7. But if you’re going to use one of them, it’s probably a good idea to make sure you’re not choosing a library that has really bad performance. Database. Jul 5, 2023 · Managing transactions for atomicity when saving data with Entity Framework Core Nov 11, 2025 · EF Core Bulk Insert with Entity Framework Extensions Boost your EF Core / EF6 insert performance now The BulkInsert method from Entity Framework Extensions is the easiest way to insert thousands of entities in EF Core and EF6. The Update method is able to bulk update for a set of records with same set of up Mar 8, 2023 · I'm using the EFCore. Try it now. My Jan 31, 2022 · This issue tracks introducing an API to copy data inside the database, from one table (or several) into a destination table. Learn IncludeGraph, batch tuning, temp tables, auditing, logging, events, and more. Wrap it in transactions, know when it shines, and watch out for its quirks and you’ll get the best of both SQL Server and EF Core worlds. Jul 11, 2023 · 1) Call SaveChanges once and ef core will batch some sql statements together. Performance and efficiency become paramount. 2) use SqlBulkCopy. ef-core-advanced-topics documentation: Connection ResiliencyIn general, when there is a connection failure the current transaction is rolled back. Jun 27, 2025 · When working with large datasets in . Dec 19, 2022 · EF Core 7. It’s the fastest way to insert entities in EF Core. My issue is, for some reason, BulkInsertAsync does not insert any records to the DB. When working with large datasets in Entity Framework Core (EF Core), you may encounter scenarios where updating multiple records in a database can be a performance bottleneck if done one record at a time. The library provides various extensions method to Entity Framework Core, including the ability to perform bulk operations like BulkInsert, BulkDelete, BulkUpdate, and BulkMerge. Why Bulk Insert Matters Apr 12, 2025 · In this post, we’ll build a simple EF Core extension method that uses SqlBulkCopy under the hood to insert large datasets efficiently — and most importantly, it supports SQL transactions Mar 23, 2024 · Explore various methods for fast bulk inserts in SQL with C# and EF Core, highlighting techniques like Dapper, EF Core optimizations, EF Core Bulk Extensions, and SQL Bulk Copy. One other thing that you could try is to set also config SetOutputIdentity = true. Extensions. BulkExtensions to insert batches of, at most, 100,000 records into a database. EntityFramework. Looks like BulkInsert creates temporary tables in database. So is this a reason? Why? It's been May 21, 2021 · And we need to perform a bulk update or insert on a request of 10,000 Blogs with N number of Post and some of the Blog's have a BlogId of 0 and some of the Post's have a PostId of 0 (as in they are newly created entities, but not all) the best strategy to insert/update Blogs and Posts where we need to IncludeGraph would be to separate these into two distinct transactions while just using Dec 25, 2024 · This article delves into strategies for performing bulk updates in EF Core, ensuring your applications remain efficient and performant. Core just weren’t designed to handle. Each statement inserts multiple customers at once, which seems to be the cause of our next speed gain. However, when operations fail or exceptions occur, implementing effective Feb 18, 2022 · BULK INSERT has nothing to do with relations and makes sense only if you need to insert many hundreds if not thousands or rows. Json dependency (v7. Aug 19, 2025 · Learn how to use BatchSize, BatchTimeout, and BatchDelayInterval in Entity Framework Extensions to optimize performance during bulk operations. Jan 22, 2023 · Hello, I am using SQL Bulk copy to read data from Excel to SQL DB. Transactions allow several database operations to be processed in an atomic manner. Buradan indirebilirsiniz. It is an insert into a single table. Note this is different from bulk importing data from the client into the Apr 13, 2024 · EF Core is too slow? Discover how you can easily insert 14x faster (reducing saving time by 94%). Jun 24, 2025 · Entity Framework Extensions Include Graph The BulkOperation. This is your responsibility to handle. This transaction lasts only long enough to execute the operation and then completes. Nov 13, 2025 · Boost EF Core performance with the top 7 bulk operation options. And in my case records will not copy from temp tables to target table. Net project that relies on EF Core. Also temp tables remain in database. BulkExtensions to dramatically speed up data insertion. Perform upsert operations on large numbers of entities with customizable options for all EF versions, including EF Core 7, 6, 5, 3, and EF6. BulkInsert requires more time to implement when you have several different lists to insert. BulkExtensions, but the issue is the execution for this function when I tried to insert 2 millions record is taking aroun Jul 25, 2025 · EF Core doesn’t have built-in support but raw SQL, stored procs, and bulk extensions let you use it safely and effectively. NET / EF Core. This allows it to skip Feb 12, 2024 · EF Core 8’s enhanced capabilities for handling bulk operations represent a significant step forward in efficiency and performance. EFCore Extensions provides the BulkInsert and BulkInsertAsync methods to efficiently insert large numbers of entities into the database in a single operation. This article shows how to use EF Core Bulk Extensions on a . It allows you to customize how your entities will be updated, such as by specifying a custom key, updating only a few properties, and much more. Net EFCore EF Core Bulk Batch Extensions for Insert Update Delete Read (CRUD) operations on SQL Server, PostgreSQL, MySQL, SQLite Jan 16, 2025 · EF Core (Entity Framework Core) is a powerful Object-Relational Mapper (ORM) for . 5. So the answer is no, you don't need to call SaveChanges because EFCore. NET 7, thus continuing to provide EF Core with the ability to efficiently bulk insert data. Using temporary tables for bulk inserts and then merging them with ExecuteSqlCommand() helps maintain performance and reduce the overhead. So you would need to grant that right. However, there's an important caveat: these bulk operations bypass the EF Core Change Tracker. Information so that I can view the SQL queries Entity Framework Core creates as it talks to the database. In this article, I will discuss Bulk Operations in Entity Framework Core using EFCore. Click here to learn more. ⚠️ BulkInsert directly inserts entities into the database — you don’t need to call SaveChanges. ToQueryString method introduced in Entity Framework Core 5. 0, using EF Core 6. I'll show you the results for inserting 100, 1. net 7, with the latest Entity Framework. We will compare EF Core, raw SQL with Dapper, EF Bulk extensions, and the SqlBulkCopy class. Similarly, ExecuteDelete allows us to write a query and delete the entities matching Oct 23, 2016 · This issue is about using that bulk copy API from Npgsql's Entity Framework Core provider. By default, the execution strategy will retry the operation as if the transaction were rolled back, but if it's not the Mar 8, 2025 · Since SqlBulkCopy() is optimized for bulk inserts, this makes it significantly faster than using EF for large datasets. Net for Insert Update Delete Read (CRUD), Truncate and SaveChanges operations on SQL Server, PostgreSQL, MySQL, SQLite - Timz BulkInsert Extension Method in Entity Framework In this article, I am going to discuss BulkInsert Extension Method in Entity Framework using Z. SetOutputIdentity = false, but unfortunately it didn't work as some configuration values are overridden when IncludeGraph = true. You can use various options to bulk insert entities in EF Core exactly the way you want — like keeping Dec 13, 2023 · Handling bulk data operations in Entity Framework Core (EF Core) can be challenging, especially when dealing with large datasets. Jan 3, 2020 · Yes, there is already the question Bulk Insert Optimization in . You need to create/handle a transaction in your code and specify yourself the right order to save. For an introductory comparison of these two techniques, see the Overview page on saving data. Mar 8, 2020 · 4 I am importing data from a CSV file into a SQL Server DB, the CSV may contain duplicate entries. SetOutputIdentity = false, records will insert and save. Ultimate ASP. Before I did something like: var itemsDT = jobs. I need to BulkInsert 100K rows into SQL Server but it was keep loading . Library is Lightweight and very Efficient, having all mostly used CRUD operation. BulkExtensions in . Boost your performance with our method integrated within EF Core: Bulk Insert, update, delete, and merge. NET MAUI? Microsoft's decision to Z. You would also not use a small car instead of a truck to transport 20 tons of goods. Learn how to persist data by adding, updating, and deleting them. 3 with an EF Core 3. Learn what bulk operations are, why you should use it and how easily you can implement it in your project. 6. Those operations all insert a large amount of data using minimal logging - instead of logging individual row operations, the entire data pages inserted are logged. Jun 10, 2024 · SqlException: Transaction (Process ID 61) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. 0 ile gelen yeni özellikler ile nasıl daha performanslı yapabileceğinizden bahsedeceğim. 2 days ago · When we take a look at the generated SQL commands (by using SQL Extended Events) we notice that Entity Framework generates multiple SQL insert statements. Mar 2, 2024 · Bu makalede, özelikle büyük datalar üzerinde yapılan Bulk Operasyonları, EF Core 8. NET Bulk Operations Bulk Merge Description The BulkMerge method lets you merge (insert or update/Upsert) a large number of entities in your database. In EF Core, the Unit of Work pattern typically wraps the DbContext, providing an abstraction layer that coordinates the work of multiple repositories by collecting their operations into a single transaction. While waiting, the SQL Server activity monitor shows me the bulk insert statement is waiting (wait type= ASYNC_NETWORK_IO). Please read our previous article where we discussed Bulk Insert, Update, and Delete Operations in Entity Framework with Examples. 35. The entire process remains within a single transaction, so if any step fails, all changes are rolled back, ensuring consistency. ToDataTable&lt;ProfileJob&gt;(); usin Entity Framework EF Core efcore Bulk Batch Extensions with BulkCopy in . May 25, 2018 · We are using the bulk insert package and in regular tests, the inserts go through fine but in load tests where multiple web jobs are trying to do bulk inserts, we are getting deadlocks. These methods are designed for high-performance scenarios where you need to update or delete multiple records efficiently The EF Core bulk insert method from Entity Framework Extensions extends your DbContext or DbSet, and under the hood, it uses the best available bulk insert mechanism for your provider — like SqlBulkCopy for SQL Server. 3) define a TVP and insert () . Feb 8, 2018 · Improving bulk insert performance in Entity framework. Entity Framework Core allows you to work with data in your application without explicitly running database commands. Optimize your database operations - try it now. We found a couple of options but both are under licence: EF. Jun 22, 2025 · BulkSaveChanges even if slower makes everything easier. Sep 15, 2021 · Bulk insert SQLite doesn't have any special way to bulk insert data. Reuse the same parameterized command. Learn how to correctly use these methods in EF Core to ensure data consistency. Sep 10, 2024 · In this blog post, we'll explore the Unit of Work pattern and how it can be implemented in Entity Framework Core (EF Core). Our comprehensive guide on ExecuteUpdate and ExecuteDelete empowers developers to refine database interactions for maximum efficiency and performance. I am making an API call to get data (from Geotab) that I filter, transform and insert into my DB. Jul 25, 2025 · When you're working with bulk data operations, upserts, or syncing external sources, MERGE is one of best of both SQL Server and EF Core worlds. NET 6. Dec 18, 2024 · Learn how to perform high-performance bulk insert in Entity Framework Core (EF Core) using default methods, third-party libraries & raw SQL. Entity Framework EF Core efcore Bulk Batch Extensions with BulkCopy in . The workaround that seems to work is to give up on graph and bulk insert all dependent collections separately: 17 hours ago · It is constructed specifically to demonstrate real-world performance engineering concepts in . NET Core Web API - Second Edition is a step-by-step and easy-to-digest guide to Feb 1, 2025 · Understanding and implementing batching in EF Core is like gaining a superpower-it makes your app work smarter, not harder, and gives you a sense of control and confidence in your development process. Otherwise, a plain old SaveChanges will persist all changes in a single transaction, and take care of relations between objects While being very efficient, Entity Framework (EF) & Entity Framework Core (EF Core) do not allow you to natively perform bulk operations, Hopefully, there is an open-source library that solves the problem It is known as EF Core Bulk extensions. Sep 24, 2023 · The Traditional Approach: EF Core’s SaveChanges Entity Framework Core provides a straightforward and familiar way to insert data into a database using the SaveChanges method. Net for Insert Update Delete Read (CRUD), Truncate and SaveChanges operations on SQL Server, PostgreSQL, MySQL, SQLite Nov 11, 2025 · Efficiently add or update Entity Framework data with EF Core Bulk Merge Extensions. -Bulk operations (super fast, en masse DB Protocol): Insert, Update, Delete, Read, Upsert, Sync, SaveChanges. If you start a transaction within Entity Framework, Bulk Operations will honor it. 20. For example, it is logging: Dec 13, 2024 · EF Core SaveChangesAsync: 1,000 records: 18 ms 10,000 records: 203 ms 100,000 records: 2,129 ms EF Core BulkInsertAsync: 1,000 records: 8 ms 10,000 records: 76 ms 100,000 records: 742 ms1 With BulkInsertAsync, you can handle large data operations efficiently and keep your application running smoothly. When I set config. Jun 22, 2024 · EF Core 7 introduced two powerful new methods, ExecuteUpdate and ExecuteDelete. 000, and 1. Jun 22, 2025 · Unlock the power of EF Core by using SaveChanges to save all entities in a database. Sep 24, 2020 · Only bulk inserts, performed by bcp, BULK INSERT or SqlBulkCopy. NET Core 2. 000. Dec 17, 2024 · In this article, we will explore how to efficiently perform bulk inserts in EF Core using built-in approaches, third-party libraries, and raw SQL. This becomes issue when we re initialize the DbContext object. In this article, I am going to discuss Bulk Operations (Insert, Update, and Delete) in Entity Framework Core (EF Core) with Examples. Assuming that the classes in apiData are the same as your entities, you should be able to use Attach(newAccount, originalAccount) to update an existing entity. in which case instead of direct Bulk INSERT into destination table, it will do MERGE from Temp table, so maybe that way it will work. BulkExtensions… Sep 5, 2018 · Under the hood uses SqlBulkCopy for Insert, for Update/Delete combines BulkInsert with raw Sql MERGE (MsSQL 2008+). . Jul 22, 2025 · Struggling with slow bulk inserts in Entity Framework? Explore efficient strategies, code examples, and alternatives like SqlBulkCopy and EFCore. Net for Insert Update Delete Read (CRUD), Truncate and SaveChanges operations on SQL Server, PostgreSQL, MySQL, SQLite - sanamhub/borisdj-efcore-bulk I have an API in asp. Entity Framework Extensions executes the same operation many times faster while also using significantly less memory. Only Entity Framework Extensions support all kind of associations and inheritance, and it's the only one still supported. Jun 24, 2025 · Bulk Operations such as BulkInsert, BulkUpdate, BulkDelete don't use a transaction by default. However if four or more records are being inserted, EF Core will batch up the records and perform a single SQL MERGE statement. Not only is it super fast, but it’s also highly customizable. May 8, 2023 · ExecuteUpdate and ExecuteDelete are a way to save data to the database without using EF's traditional change tracking and SaveChanges () method. Mar 21, 2025 · Entity Framework Core (EF Core) continues to evolve, offering developers powerful tools to optimize database interactions. I tried to insert insert for loop but I am getting a error… EntityFramework . Nov 14, 2023 · I've tried to use different configurations to overcome that issue like setting BulkConfig. If the transaction is committed, all of the operations are successfully applied to the database. In the following example, the IncludeGraph is enabled and the list of Invoice is added to the database using BulkInsert. Please read our previous article where we discussed Asynchronous Programming with Entity Framework with Examples. Control batch size, timeout, and delay with flexible configuration options. Xamarin Days Are Numbered - Are You Ready to Migrate to . Net 8. There was no way to execute bulk operations in Entity Framework Core without a dependency. Each insert is 1000 to 2000 records. Net EFCore EF Core Bulk Batch Extensions for Insert Update Delete Read (CRUD) operations on SQLite May 15, 2024 · We are currently using Entity Framework Extensions to do bulk inserts which works great but I was looking into the possibility of turning some of our SQL tables into memory optimised tables. Net EFCore EF Core Bulk Batch Extensions for Insert Update Delete Read (CRUD) operations on MySQL 6 We've tried and tested a couple of approaches when bulk inserting using EF and eventually went with table-valued parameters for getting the best performance at a range of row sizes. NET, using a scenario every enterprise system deals with: bulk inserts, EF Core behavior, SQL bottlenecks, GC pressure, and. I understand it' Apr 8, 2025 · EF Core offers ExecuteUpdate and ExecuteDelete batch operations that allow updating and deleting multiple entities in a single SQL query without retrieving them from the database. EntityFramework . -AddOp (additional improvement): Truncate. NET core process (A windows service) and the Database are on the same server. EF Core already supports batched updates, where if you do several updates and then call SaveChanges(), these will all be done in a single roundtrip (rather than a roundtrip-per-update). In Entity Framework, the SaveChanges() method internally creates a transaction and wraps all INSERT, UPDATE and DELETE operations under it. Extensions Update method. Subsequent executions will reuse the compilation of the first one. Extensions with Examples. Bulk insertion is a common requirement when dealing with large datasets, and it's essential to handle errors gracefully and efficiently. Apr 19, 2020 · The problem is that this is a scenario Entity Framework or EF. 0 may help with this scenario. Nov 11, 2025 · Bulk Update with Entity Framework Extensions Easily customize and optimize your entity updates in EF Core now The BulkUpdate method from Entity Framework Extensions is the most flexible way to update your entities in EF Core. Jun 22, 2025 · Unlock the power of EF Core by using Bulk Insert to improve performance dramatically by using bulk operations. GitHub wiki Hi, I don't use explicit transactions as there's no need for the single bulk operation. When working with EF Core, transactions play a crucial role in maintaining data integrity, ensuring that a group of operations either completes entirely or has no effect at all. BulkExtensions works directly with the database (SqlServer). rrjwy extqme mbavl tsi fklvpbn uhxd inbhfu mhgs daa mmacpv hdztbf kpmybv hsze sdk ghued