How often do you check your query plans to see if they contain any warnings? If you're missing them, it means that you're not getting all those hints about missing indexes, join predicates or statistics. Is the query optimiser trying to tell you about implicit conversions? Dennes shows how to view the warnings in plan cache for a particular database using SQL.
This week Steve Jones wonders if you'd be willing to use Express edition in production situations.
The options that you need to select when setting up an Azure Storage service account allow you to specify the durability and high-availability of your data, but they don't provide for data recovery to a point-in-time. In fact, it means that some of the bad things that can happen to data are more efficiently replicated to all copies. Backup is quite a separate issue.
SQL Saturday is coming to Richmond on March 21, 2015. Join us for a free day of SQL Server training and networking. There are also paid-for pre-con sessions available from Tim Mitchell and Kevin Kline. Register while space is available.
Today Steve Jones talks about development, and finding ways to make small changes that improve your code.
An article about how we underestimate the power of joins and degrade our query performance by not using proper joins
Most large organizations have implemented one or more big data applications. As more data accumulates internal users and analysts execute more reports and forecasts, which leads to additional queries and analysis, and more reporting. The cycle continues: data growth leads to better analysis, which generates more reporting. Eventually the big data application swells with so much data and querying that performance suffers.
Could you spare 3 minutes to do us a quick favor? Redgate’s running this short survey on how our readers develop and deploy databases. It’s just 12 multiple choice questions, so if you’ve got a couple of minutes to spare, we’d love to hear from you.
Today Steve Jones talks leadership, and the value it can bring to your team if you display just a little of it.
A database must be able to maintain and enforce the business rules and relationships in data in order to maintain the data model. It does this through referential constraints. They aren't complex, but are powerful, especially with the means to attach DRI actions to them. Joe Celko explains all, and pines for the ANSI CREATE ASSERTION statement.
I’m excited to announce the release of a new open-source project that fully automates...
One of my favourite features of SQL Server 2022 was the T-SQL Snapshot Backups....
By Steve Jones
I have said and written this many times: Redgate Software is the type of...
Comments posted to this topic are about the item Optional Parameter Plan Optimization in...
Comments posted to this topic are about the item AI Experience Gap that we...
There is a table tmp_tab:
CREATE TABLE tmp_tab ( id int, val int );
INSERT INTO tmp_tab VALUES (1, 1), (2, NULL), (3, 3), (4, 4), (5, 5);You want to order the rows ids by the following expression:
ISNULL(val, id) + 1Which of the following queries produces the expected ordering and why? (Select all correct) See possible answers