- Main Features
-
Bulk Options
- Bulk Options
- Audit
- Batch
-
Column
- Column Input Expression
- Column Output Expression
- Column InputOutput Expression
- Column PrimaryKey Expression
- Column Synchronize DeleteKey Subset Expression
- Ignore OnInsert Expression
- Ignore OnMergeInsert Expression
- Ignore OnMergeMatched AndCondition Expression
- Ignore OnMergeMatched AndOneNotCondition Expression
- Ignore OnMergeUpdate Expression
- Ignore OnSynchronizeInsert Expression
- Ignore OnSynchronizeMatched AndCondition Expression
- Ignore OnSynchronizeMatched AndOneNotCondition Expression
- Ignore OnSynchronizeUpdate Expression
- Ignore OnUpdate Expression
- Ignore OnUpdateMatched AndCondition Expression
- Ignore OnUpdateMatched AndOneNotCondition Expression
- MergeMatched AndCondition Expression
- MergeMatched AndNotCondition Expression
- SynchronizeMatched AndCondition Expression
- SynchronizeMatched AndOneNotCondition Expression
- UpdateMatched AndCondition Expression
- UpdateMatched AndOneNotCondition Expression
- Coalesce Destination OnMergeUpdate Expression
- Coalesce Destination OnUpdate Expression
- Coalesce OnMergeUpdate Expression
- Coalesce OnUpdate Expression
- Context Factory
- Execute Event
- ExplicitValueResolutionMode
- Identity
- Include Graph
- ForceValueGeneratedStrategy
- Key
- Logging
- Rows Affected
- Temporary Table
- Transaction
- Transient Error
- SQL Server
- Coalesce
- Coalesce Destination
- Delete Matched and Condition
- Delete Matched and one NOT Condition
- Delete Matched and Formula
- Matched and Condition
- Matched and one NOT Condition
- Matched and Formula
- Batch Operations
- Events
- Utilities
- C# Eval Expression
Entity Framework Extensions MergeMatched AndCondition Expression
Description
The MergeMatchedAndConditionExpression
allows you to perform only the UPDATE
in the BulkMerge
if the specified property value is equal to the database value.
The following example updates all those records in which CreatedDate
value is equal to the database value.
using (var context = new EntityContext()) { var customers = context.Customers.ToList(); customers.ForEach(x => { x.Name += "_Updated"; x.Description += "_Updated"; x.ModifiedDate = DateTime.Now; x.IsActive = false; }); customers.Last().CreatedDate = DateTime.Now; context.BulkMerge(customers, options => { options.MergeMatchedAndConditionExpression = c => new {c.CustomerID, c.CreatedDate }; }); }
- It will update all records except for the last one because the
CreatedDate
property is updated.
Author: ZZZ Projects