SQL Server blogs
Showing blogs 1-20 (out of 82)
Triggers are special stored procedures that execute automatically in response to certain events in a database. This blog explains how to create three types of trigger in SQL Server: DML, DDL and Logon triggers.
This blog examines how to use Transactions in Microsoft SQL Server to allow you to control when data changes are committed to the database. You'll also discover how you can rollback transactions, effectively giving you the chance to undo changes to your data.
SQL Server 2012 introduces new functions to find the previous or subsequent value for a row, without using a complicated self-join. This blog explains how to use LAG and LEAD, including partitioning row sets.
Writing SQL in Management Studio could, Wise Owl feel, be made a little easier: here are 10 practical suggestions for how!
This blog shows how to conditionally hide, display or format parts of a report according to its render format (ie whether you're viewing it in Excel or not). The method used is slightly different between 2008 R2 and 2012.
This blog gives the low-down on how to start and use the debugger included in SQL Server Management Studio 2008 R2 and SSMS 2012.
This blog teaches you how to modify existing data in your database by either deleting records or updating them.
You can use BEGIN TRY to trap errors from SQL Server 2005 onwards, and also raise your own errors using RAISERROR or THROW - this blog explains all!
For the sake of completeness, this blog explains how to join to the results of table-valued functions (like a correlated subquery on steroids).
This blog teaches you how to return values from your SQL stored procedures using two different techniques: return codes, and output parameters.
If you're using shared datasets to populate subreports in Reporting Services you might have encountered an error when you preview your reports. This short blog explains what the problem is and offers a few simple suggestions to work around the issue.
Dynamic SQL is a technique for building valid SQL statements from separate pieces of text. You can use this technique to create remarkably flexible and useful queries, as long as you're aware of the potential danger of SQL injection attacks.
A quick blog on how to change the scope of any variable in SQL Server Integration Services 2012.
A short blog explaining why you might have problems connecting to an Excel workbook from SSIS.
A derived table is a technique for creating a temporary set of records which can be used within another query in SQL. You can use derived tables to shorten long queries, or even just to break a complex process into logical steps.
How to store the name of each file in a folder in a SQL Server table using an Integration Services package.
Cursors allow you to step through a set of data one record at a time. They’re not the quickest tool in SQL Server’s box, but they have their uses and this blog explains how they work.
Many programming languages feature a variety of types of loop which allow your programs to repeat a set of instructions multiple times. In SQL there is only one type of loop, and this blog explains how it works!
This blog shows you how to create table-valued functions in SQL (ie functions which return a table of data!).
Table variables allow you to hold rows of data in temporary storage, without any processing overhead. Read this blog to add this technique to your SQL armoury!