Technical Article

Tuning Distributed Applications to Access Big Data

Distributed applications are just that: distributed across one or more hardware platforms across the enterprise. The database administrator (DBA) has the unenviable task of monitoring these environments and configuring and tuning the database server to meet multiple needs. As multiple distributed applications now require access to a very large data store, what tuning options are available to help?

External Article

The ETL from Hell - Diagnosing Batch System Performance Issues

Too often, the batch systems that underlie a lot of database processing just grow without conscious design. When runs start to extend beyond their allotted time, and tuning no longer solves the problem, it is often discovered that batches are run in series, with draconian error handling. It is time to impose some rational design, and Nigel is a seasoned healer of batch processes.

SQLServerCentral Article

SQL Saturday #248 Tampa

SQLSaturday BI & Big Data Edition is a free training event for everyone interested in learning about Business Intelligence & Big Data with a focus in the Microsoft SQL Server platform. This event will be held November 9th, 2013. In addition to our Saturday free event, we will also host four paid full day pre-conferences.

Blogs

T-SQL Tuesday #202 SQL Server Outage You’ll Never Forget: A Roundup

By

When I put together the invitation for T-SQL Tuesday #202, I wasn't sure what...

A Last Minute Trip to the EU

By

My life has some crazy travel stretches for sure. Between speaking, office visits, customer...

Part 3 of 3: Tuning DiskANN — R, Alpha, L, Beam Width, Recall and Latency

By

In Part 1, we saw how ‘Vamana’ represents vectors as nodes, connects them with...

Read the latest Blogs

Forums

Server-Level Table sizes

By Artur Sanin

Comments posted to this topic are about the item Server-Level Table sizes

ORDER BY alias

By aniap

Comments posted to this topic are about the item ORDER BY alias

Optional Parameter Plan Optimization in SQL Server 2025: Fixing the Kitchen-Sink Search Procedure

By vgupta

Comments posted to this topic are about the item Optional Parameter Plan Optimization in...

Visit the forum

Question of the Day

ORDER BY alias

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) + 1
Which of the following queries produces the expected ordering and why? (Select all correct)

See possible answers