Tracy Boggiano

Tracy is the Database Superhero for ChannelAdvisor. She has spent over 20 years in IT and has used SQL Server since 1999. Tracy covers all aspects of administration and deals heavily with performance tuning and high availability and disaster recovery. Tracy is a co-organizer of a Special Interest Group (SIG) dedicated to advanced DBA topics in our local user group TriPass. She is also the founder of http://WeSpeakLinux.com. Before she worked full-time as a DBA she was formally a developer and network administrator. She also tinkered with databases in middle/high school to keep her sports card collection organized.

All authors

All authors

Blogs

T-SQL Tuesday #202: 100 Hours

By

It’s time for T-SQL Tuesday again and this is a great prompt to start...

Exploring DiskANN: Part 2: PQ, SSDs, caching and beam search

By

How I used AI for this postChatGPT to generate images based on info specifically...

T-SQL Tuesday #202: The Two Outages I Won't Ever Forget

By

My T-SQL Tuesday #202 entry for Marlon Ribunal's invitation on memorable SQL Server outages....

Read the latest Blogs

Forums

Performance Regression After Upgrading from SQL Server 2016 to 2022

By abdalah.mehdoini

Bonjour à tous, La semaine dernière, nous avons effectué une mise à niveau de...

Adding new column with DEFAULT

By Thomas Franz

Comments posted to this topic are about the item Adding new column with DEFAULT

How do I connect to a SQL Server database on my ISP?

By Doctor Who 2

I've got a web application for my side business. I've added a SQL Server...

Visit the forum

Question of the Day

Adding new column with DEFAULT

Which number will the COUNT() return after executing the following statements: 

DROP TABLE IF EXISTS #test;
CREATE TABLE #test (id INT)
INSERT INTO #test (id)
SELECT *
  FROM GENERATE_SERIES(1, 3) AS gs
;

ALTER TABLE #test ADD flag BIT CONSTRAINT DF_#test_flag DEFAULT 0;
go
UPDATE #test SET flag = 0 WHERE id = 1
UPDATE #test SET flag = 1 WHERE id = 2

INSERT INTO #test (id) VALUES (4)

SELECT COUNT(*)
  FROM #test AS t
 WHERE flag = 0
 

See possible answers