In-Memory OLTP and the Identity Column
Over the past month I've been playing around with the new In-Memory OLTP (code name: "Hekaton") features within SQL Server...
2013-11-12
1,527 reads
Everyday SQL
TSQL Tuesday #47 - Your Best SQL Server SWAG
The host for T-SQL Tuesday #47 is Kendal Van Dyke (blog|twitter), and his topic of choice is about the best...
2013-10-08
970 reads
One Year Later
Wow! It’s been one year since I launched my blog, and my how things have changed.
Accomplishments Over the Past...
2013-09-24
709 reads
The Case of the NULL Query_Plan
As a DBA, we're often asked to troubleshoot performance issues for stored procedures. One of the most common tools at...
2013-09-06 (first published: 2013-09-03)
3,272 reads
How to Tell If Your Users are Connecting to the Availability Group Listener
You've spent a lot of time planning and building out a new SQL Server 2012 environment complete with Availability Group...
2013-08-29 (first published: 2013-08-27)
2,436 reads
PASS Summit 2013 - You Ain't From Around Here Are Ya?
I know what y'all are thinkin', what's Charlotte got to do with SQL Server? Just hear me out. There's a...
2013-08-20
1,295 reads
Are You the Primary Replica?
UPDATED -- Jul 3, 2015 -- To verify database exists, per comments by Konstantinos Katsoridis. Thanks for finding the bug!
In my recent adventures...
2013-07-23
1,661 reads
Setup an Availability Group with Multiple Subnets in VMware Workstation
Before we get started, I want to make it clear this is NOT how you would normally configure all these...
2013-07-16
2,535 reads
VMware vSphere Storage Performance - Thick vs Thin Provisioning
Industry experts will tell you that virtualization of your environment is not done to improve performance, it's done to make...
2013-06-25
4,478 reads
Investigating Plan Cache Bloat
SQL Server includes a DMV, sys.dm_exec_query_stats, that returns performance statistics for each query plan cached in memory. However, it can...
2013-05-28
1,144 reads
Blogs
10 Decisions to Make Before You Create A Fabric Workspace
Creating a Fabric workspace takes about 30 seconds. Restructuring workspaces after people have built...
Flyway Tips: Object History
By Steve Jones
It’s a small change, but a handy one. Flyway Desktop (FWD) now includes the...
Car Update September 2026
By Steve Jones
Software is hard. While I love our Lucid Gravity, I realize that they are...
Forums
A Complete Guide to IMAP to Office 365 Migration
IMAP to Office 365 migration is an important step for organizations that want to...
Adding new column with DEFAULT II
Comments posted to this topic are about the item Adding new column with DEFAULT...
Advanced Deployment Scenarios: Stairway to Reliable Database Deployments Level 7
Comments posted to this topic are about the item Advanced Deployment Scenarios: Stairway to...
Question of the Day
Adding new column with DEFAULT II
Which number did the two COUNT(*) return:
DROP TABLE IF EXISTS #tmp CREATE TABLE #tmp (id INT NOT NULL) INSERT INTO #tmp (id) SELECT gs.value FROM GENERATE_SERIES(1, 5) AS gs ALTER TABLE #tmp ADD my_value INT NOT NULL CONSTRAINT df_tmp_my_value DEFAULT 1 SELECT COUNT(*) FROM #tmp AS t WHERE my_value = 1 ALTER TABLE #tmp DROP CONSTRAINT df_tmp_my_value ALTER TABLE #tmp ADD CONSTRAINT df_tmp_my_value DEFAULT 2 FOR my_value SELECT COUNT(*) FROM #tmp AS t WHERE my_value = 1See possible answers