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Performance Of The Sql Merge Vs Insertupdate | AutoTraffic

Performance of the SQL MERGE vs. INSERT/UPDATE

As I wrote while exploring A Hazard of Using the SQL Merge Statement, I love MERGE because I think it is the greatest thing to happen to SQL querying since sliced bread. Clearly people have been doing ... read more

T-SQL Programming Part 9 - Using the MERGE Statement to Perform an UPSERT

Do not attempt to improve query performance ... logic to perform INSERT, UPDATE, and/or DELETE operations against a Target table. Next time you need to perform an UPSERT operation look into using the ... read more

Guru: A More Efficient Way To Merge With SQL

I’ll show the original merge statement (Figure 1), followed by the enhanced statement (Figure 2) and point out the differences. Figure 1. The original merge statement Exec sql Merge into ... few lines ... read more

Merge Databases With Different Schema and Duplicate Entries

Often the only way to determine the best approach is by testing several and comparing their effect on database performance ... three ways to address the situation in SQL and MySQL. All the News That's ... read more

SSIS SCD vs MERGE Statement – Performance Comparison

the requirements and the datasets I’m working on I think I’ll stick with MERGE for now….. :) NOTE: This was done on SQL Server 2008R2 Developer Edition running on Windows 7 Ultimate, not sure if SQL ... read more

Deploying Merge Replication Subscribers in SQL Server

The most difficult part of merge replication is quickly deploying snapshots to your subscribers. Hilary Cotter shows how to decouple your SQL Server snapshot generation from your snapshot application ... read more

Code for Performance from the Start

DBAs spend a great deal of time monitoring and managing the performance of database systems ... This is known as relational closure. All SQL data manipulation operations—that is, Select, Insert, ... read more

Simplifying Your Application Development with the SQL MERGE Statement

When key performance ... delete operations ("merge" operations, in effect) would enable a user to work through the GUI while the underlying application efficiently "hardens" the changes in the ... read more

Diagnosing Common Database Performance Hotspots in our Java Code

Check #1: Access to DB should decrease due to the help of Data Caches The following shows a dashboard charting Average Number of SQL Executions (green) vs Total Number of SQL Executions (blue). In a ... read more

The Importance of the Relational System Catalog

Data manipulation language SQL (SELECT, INSERT, UPDATE, MERGE, DELETE) statements use the system catalog ... and setup of the system catalog will have an impact on the overall performance of the DBMS. ... read more
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