Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17


query to insert or update

Posted on 2015-02-02
Medium Priority
1 Endorsement
Last Modified: 2015-02-13
I'd like to write a script to insert records from one table to a target table if record doesn't exist or update record in target table if exists.  thanks for your help.
Question by:shwelopo
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions

Expert Comment

by:Monika Bharti
ID: 40585573

This way you can update existing rows, insert rows that exist only in the source, delete rows that appear only in the target.

In your case, you could do something like:
MERGE tableTo AS T
USING tableFrom AS S
      ON (T.product= S._product)
     THEN INSERT(product, something) VALUES(S._product, S.something)
     THEN UPDATE SET T.Something= S.Something
OUTPUT $action, Inserted.*, Deleted.*;

Open in new window

This statement will insert or update rows as needed and return the values that were inserted or overwritten with the OUTPUT clause.
LVL 143

Accepted Solution

Guy Hengel [angelIII / a3] earned 2000 total points
ID: 40585594
SQL Server and Oracle both have a MERGE statement which are doing what you are asking:

Featured Post

U.S. Department of Agriculture and Acronis Access

With the new era of mobile computing, smartphones and tablets, wireless communications and cloud services, the USDA sought to take advantage of a mobilized workforce and the blurring lines between personal and corporate computing resources.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

An alternative to the "For XML" way of pivoting and concatenating result sets into strings, and an easy introduction to "common table expressions" (CTEs). Being someone who is always looking for alternatives to "work your data", I came across this …
When trying to connect from SSMS v17.x to a SQL Server Integration Services 2016 instance or previous version, you get the error “Connecting to the Integration Services service on the computer failed with the following error: 'The specified service …
This video shows syntax for various backup options while discussing how the different basic backup types work.  It explains how to take full backups, incremental level 0 backups, incremental level 1 backups in both differential and cumulative mode a…
Via a live example, show how to restore a database from backup after a simulated disk failure using RMAN.

670 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question