How to Find Out Which Database Object Got Deleted
Greg Larsen shows you how to use the Transaction ID value to identify the object_id for a deleted table.
2017-08-22
4,419 reads
Additional Articles
Is It Time To Stop Using IsNumeric()?
The old system function IsNumeric() often causes exasperation to a developer who is unfamiliar with the quirks of Transact SQL. It seems to think a comma or a number with a 'D' in the midde of it is a number. Phil Factor explains that though IsNumeric has its bugs, it real vice is that it doesn't tell you which of the numeric datatypes the string parameter can be coerced into, and because it doesn't check for overflow. Phil comes to the rescue with a couple of useful alternatives, one of which works whatever version of SQL Server you have, and which tell you what datatype the string can be converted to.
2017-08-21
4,500 reads
Database Code Analysis
Database code analysis will reduce the number of 'code smells' that creep into your database builds. It will alert the team to mistakes or omissions, such as missing indexes, that are likely to cause performance problems in production. It will allow the Governance and Operations team visibility into production readiness of the code, warning them of security loopholes and vulnerabilities. William Brewer describes the two technical approaches to database code analysis, static and dynamic, and suggests some tools that can help you get started.
2017-08-18
3,546 reads
How to Read a Transaction Log Backup
The transaction log backup is stored in SQL Server proprietary format, just like the transaction log itself. Even though the transaction log backup is in a special format, Microsoft has provided us with the fn_dump_dblog() function to read transaction log backups. This function is undocumented, so you should use care when using this function in a production environment.
2017-08-17
4,324 reads
Monitoring Azure Cloud and Hybrid Environments
Cloud-based services and applications must still be monitored just like the on-premise ones. You still need most of your data center activities that ensure that your planning, budgeting, security and service-level obligations are met wherever the data and services are actually hosted. There is much to be said for an integrated approach to providing a unified view of entire application workloads on-premise. hybrid and cloud using the same tools wherever possible.
2017-08-16
3,995 reads
Let’s Corrupt a Database Together, Part 3: Detecting Corruption
Having already shown how to corrupt a database, and then how nonclustered indexes can be corrupted independently, in this post Brent Ozar explains how you can detect corruption.
2017-08-15
6,725 reads
SQL Server function to check dynamic SQL syntax
Although most of what you read tells you to stay away from dynamic SQL, the reality is there are places where writing T-SQL code dynamically just makes sense. The one downside to dynamic SQL is that if it is not written correctly the code will fail. Eli Leiba shares a function that he created to help determine if the dynamic code is OK prior to execution.
2017-08-14
5,638 reads
Introduction to Azure SQL Data Sync
The majority of Azure SQL Database related features reach their General Availability (GA) stage relatively quickly. There are however, some exceptions. The most prominent example in this category is likely Azure SQL Data Sync, which has remained in Preview since its introduction 7 years ago. Fortunately, there are signs that this service might be finally reaching production-ready state. In thius article, Martin Policht will introduce its main characteristics.
2017-08-11
4,501 reads
SQL Server R Services: The Basics
It is possible to do a great deal with R within SQL Server, but it is best to start by doing analysis in R on numeric data from SQL Server and returning the results to SQL Server. There is great value to be gained even with this basic foundation. Robert Sheldon is on hand to give you a kick start with the first in his series on beginning with R in SQL Server.
2017-08-10
7,279 reads
Microsoft IT: A Case Study on “Hekaton” against RPM – SQL Server 2014 CTP1
This paper shares the approach used to understand and determine: 1) Using ‘Hekaton’ in SQL Server 2014 against RPM, including performance analysis. 2)
Understand the specifics involved while migrating to Hekaton.
2017-08-09
3,784 reads
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Question of the Day
Getting the Average
I have this data in the dbo.Commission table in a SQL Server 2022 database.
salesperson commission Brian 12 Brian 16 Andy 7 Andy 14 Andy 21 Steve 20 Steve NULLAll the data is a varchar, and I decide to run this query to get the totals for each salesperson.
SELECT SalesPerson
, AVG(TRY_PARSE(Commission AS int)) AS TotalCommission
FROM commission
GROUP BY SalesPerson
GO
What average commission is calculated for Steve? See possible answers