Updating multiple columns sql server

Anyhow, in this example, let’s pretend we are going to build a summarized table with order totals for our customers.

But, we only want to use the customers that actually have had a purchase.

This can be particularly useful when doing very large bulk UPDATEs where you don’t want to have a ton of round-trips to the server for each statement, and you can use “rewrite Batched Statements=true” options for the My SQL Java connector if you want to create a huge update (ie, 10K rows in a single statement).

But you do have to make sure your records are actually in the table, as otherwise, you’ll end up creating new records.

I work a lot with Data Warehouse data, where we many times have duplicate data for speed purposes, etc.

I have also bought your book on how to start up a blog. I am also involved in the Johannesburg SQL Usergroup and I am preparing to give a talk on SQL Query plans at our next meeting on 14 October.I have a workaround at the moment which is to write the sum to a worktable and then update original table.I just thought there might be a shorter way instead of using a worktable.A couple of examples of when I do this is that I built a dynamic contest framework for my company, and also a Commission Calculator for recalculation of commission.These tables were both filled a few columns at the time to achieve the goal.

Leave a Reply

  1. dating different nationality 31-Jul-2017 22:18

    Date of Last Revision: May 22, 2018 Who we are and how to contact us These terms of use apply to our sites at fandom.com, and (including all subdomains) and our mobile apps under the FANDOM or Wikia brands (collectively, the “Service” or “Site”), operated by Wikia, Inc. We are a company registered in the State of Delaware, U. These Terms of Use tell you the rules for using our Site. By using our website you accept these Terms of Use By accessing or using the Service, you signify that you have read, understand and agree to be bound by these Terms of Use ("Terms of Use" or "Agreement"), whether or not you are a registered user of FANDOM.