Additional Articles


External Article

The Practical Problems of Determining Equality and Equivalence in SQL

In theory, it is easy to determine whether data is equal to, greater than or lesser than a value. Real-world data types can be surprisingly tricky, even for gauging data equivalence. Because SQL cannot remain aloof from any application's data types, you need to be aware of the ways and pitfalls of individual datatypes and how you can test for equality, equivalence, similarity, identity and all that jazz. Joe Celko discusses.

2016-04-26

4,566 reads

External Article

Automatic SSRS report output of all report parameter combinations

You already have a SQL Server Reporting Services (SSRS) sales report that takes parameters for Country and State. Each time the report is run a user selects the specific Country and State for the report. A request has been made to deliver one report via email that includes all of the combinations for each country and state. Daniel Farina shows how to achieve this without modifying the report.

2016-04-22

4,408 reads

External Article

Database Version Control

By placing under source control everything we need to describe any version of a database, we make it much easier to achieve consistent database builds and releases, to find out who made which changes and why, and to access all database support materials. Matthew Skelton explains how to make sure your version control system fully supports all phases of the database lifecycle, from governance, development, delivery and through to operations.

2016-04-21

4,275 reads

External Article

T-SQL Window Function Speed Phreakery: The FIFO Stock Inventory Problem

Sometimes, in the quest for raw SQL performance, you are forced to sacrifice legibility and maintainability of your code, unless you then document your code lavishly. Phil Factor's SQL Speed Phreak challenge produced some memorable code, but can SQL features introduced since then help to produce code that performs as well and is also easy to understand? Kathi Kellenberger investigates.

2016-04-15

5,825 reads

Blogs

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Identities and Sequences II

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Question of the Day

Identities and Sequences II

In thinking about the differences between the identity property and a sequence object, which of these two guarantees that there are consecutive numbers (according to the increment) inserted in a single table?

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