External Article

SQL Server Foreign Key Update and Delete Rules

Foreign key constraints are an integral part of SQL Server database design. These are used to maintain integrity among related data in different tables. While implementing update and delete operations on values in the parent table (referenced table with primary key) we have to consider the impact on related values in the child table. SQL Server provides different rules for managing the effect of updates and deletes on child table values. How can these rules be used effectively without threatening the relational integrity?

Technical Article

SQL Diag Configuration Tool

SQL Diag is a very useful diagnostic tool that will help capture performance information from SQL Server. This tool is shipped with the SQL Server product. Howerver there is not an easy way to configure the tool - it requires the hand editing of an XML file, which is tedious and error prone. That is until now!
SQL Diag Configuration Tool (SDCT) is an intuitive, easy to use tool that will read existing sqldiag.xml configuration files, allow you to select your desired options and save those options to a new file.

External Article

SSIS Event Handlers Basics

SSIS event handlers are the simplest means of turning an SSIS script into a reliable system that is auditable, reacts appropriately to error conditions, reports progress and allows instrumentation and monitoring your SSIS packages. They are easy to implement, and provide a great deal of flexibility. Rob Sheldon once again provides the easy, clear introduction.

Blogs

10 Decisions to Make Before You Create A Fabric Workspace

By

Creating a Fabric workspace takes about 30 seconds. Restructuring workspaces after people have built...

Flyway Tips: Object History

By

It’s a small change, but a handy one. Flyway Desktop (FWD) now includes the...

Car Update September 2026

By

Software is hard. While I love our Lucid Gravity, I realize that they are...

Read the latest Blogs

Forums

Adding new column with DEFAULT II

By Thomas Franz

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

Advanced Deployment Scenarios: Stairway to Reliable Database Deployments Level 7

By Massimo Preitano

Comments posted to this topic are about the item Advanced Deployment Scenarios: Stairway to...

You Need a DBA Pipeline

By Steve Jones - SSC Editor

Comments posted to this topic are about the item You Need a DBA Pipeline

Visit the forum

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 = 1

See possible answers