Tag: SQLServer

ALTER SCHEMA does not reflect changes into the sys.sql_modules catalog view (definition)

I have recently found a strange behavior related to a comfortable DDL command, the ALTER SCHEMA statement. That happened while I was trying to move a stored procedure from a schema to another one. Both stored procedure and function definitions are stored on a catalog object which is accessible by the sys.sql_modules catalog view (column “definition”). After executing the ALTER SCHEMA statement the definition field is not updated.

We’re speaking about both SQL Server 2012 on premise and SQL Azure databases. My current SQL Server 2012 version/edition is:

Microsoft SQL Server 2012 (SP1) – 11.0.3128.0 (X64) 
Dec 28 2012 20:23:12 
Copyright (c) Microsoft Corporation
Developer Edition (64-bit) on Windows NT 6.2 <X64> (Build 9200: ) (Hypervisor)

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SQL Server under source control with Team Foundation Services and Red-Gate Source Control

During the last few years I’ve been involved in database source control management and release plans tasks. These are important and (mostly) underestimated topics.

You can implement source control management in many different ways

  • Visual Studio and TFS/SVN/GIT/..
  • Direct integration with source control tools and filesystem
  • Sql Server Management Studio integrated with TFS/SVN/GIT/..
  • Database backups
  • misc..

IMHO, putting databases under source control management should be mandatory for every team.

In this post, I will try to explain how SQL Server Management Studio can cooperate with one of the third party tools that I’m currently using. This is the scenario:

Differences between SSMS and ado.net: query execution time

Sometimes, in the forums I’m following, I face some questions about different execution times between Sql Server Management Studio and ado.net executions.

Questions like “Why my SSMS queries run so fast and my ado.net queries are so slow?”. This is a scaring behavior that you can verify lots of times. Some application’s logs tell to us a too large timing. When you copy/paste the SQLCommand into a new query window using SSMS (also on the incriminated server) the execution time is very short.

Continue reading “Differences between SSMS and ado.net: query execution time” →

SQL Server Logical Query Processing summary

Usually I found some questions on the forums about that topic. For instance:

  1. “WHERE or HAVING?”
  2. “Is the ON clause more efficient than the WHERE clause?”
  3. “Why the field aliases cannot be used with the GROUP BY clause?”
These three questions are syntax oriented. Actually there are a lot of requests about subqueries, temporary objects, sort operations and so on. This kind of questions can be replied reading this logical process document (pdf). I love it and I share it everywhere, also when training in classes/on the job.
It is a LOGICAL workflow used by the Query Processor in order to generate the related PHYSICAL process for retrieving data.

Last Updates for SQL Server family

Just before the end of the 2012 the Microsoft SQL Server Sustained Engineering team released the following updates:

Cumulative Update #10 for SQL Server 2008 R2 Service Pack 1

Cumulative Update #4 for SQL Server 2008 R2 Service Pack 2

Cumulative update #5 for SQL Server 2012

Source: SQL Release Services Blog

 

This is a very short post and maybe not the right one to start with.. however, welcome to my new english blog!

If you want to watch my italian version, feel free to browse it 😉

I use to say..

Stay Tuned! 🙂