THE SQL Server Blog Spot on the Web

Welcome to SQLblog.com - The SQL Server blog spot on the web Sign in | |
in Search

Browse by Tags

All Tags » t-sql tuesday » indexing » sql   (RSS)
  • Scans are better than Seeks. Really.

    There are quite a few reasons why an Index Scan is better than an Index Seek in the world of SQL Server. And yet we see lots of advice saying that Scans are bad and Seeks are good. Let’s explore why. Michael Swart (@MJSwart) is hosting T-SQL Tuesday this month, and wants people to argue against a popular opinion. Those who know me and have heard ...
    Posted to Rob Farley (Weblog) by rob_farley on March 11, 2014
  • Joins in single-table queries

    Tables are only metadata. They don’t store data. I’ve written something about this before, but I want to take a viewpoint of this idea around the topic of joins, especially since it’s the topic for T-SQL Tuesday this month. Hosted this time by Sebastian Meine (@sqlity), who has a whole series on joins this month. Good for him – it’s a great ...
    Posted to Rob Farley (Weblog) by rob_farley on December 10, 2012
  • SARGability isn’t about the left-hand side

    This month’s T-SQL Tuesday has me caught slightly unawares. I’m in the UK, having come over for SQLBits, and I’m left writing this with only a few hours to go. The theme this time is on misconceptions in SQL, and this fits nicely with SARGability – one of the topics that I presented on at SQLBits a week and a half ago. I often see people refer ...
    Posted to Rob Farley (Weblog) by rob_farley on October 12, 2010
  • Table? No such thing…

    No really – hear me out. Of course you create tables, and you query tables, and we say that data is stored in tables. The table is (rightly) a fundamental part of relational theory. But I find that when I think about queries and how they run, I need to approach the system thinking about the indexes that I’m querying, not the tables. When you ...
    Posted to Rob Farley (Weblog) by rob_farley on September 13, 2010
Powered by Community Server (Commercial Edition), by Telligent Systems
  Privacy Statement