Find Occurrences of Three and Four-Part Names on a SQL Server Instance
Hunt down this stuff before stuff starts to break!
2019-05-20
T-SQL
2019-05-16
2,340 reads
Find identical duplicate indexes
The purpose of this query is to find identical duplicate non-clustered indexes i.e. indexes on same table with same columns in same order. If you have a need to...
The...
2019-05-15
How to delete a lot of data from a SQL Server database
How to delete data efficiently When we delete data from a table in SQL Server, we can often find that the delete is slower than even the original insert,...
The...
2019-05-15
Testing Maximum Rows in Table Value Constructors
Solomon Rutzky dives into how big a table value constructor can be in terms of rows: On 2019-05-08, a helpful individual, Michael B, commented on my answer saying that the...
2019-05-14
Dropping Tables in Bulk
Let’s assume that you have lots of tables that need to be dropped according to some...
2019-05-13
Tutorial on SQL (DDL, DML) on the example of MS SQL Server dialect
Introduction This tutorial includes information about SQL (DDL, DML) that I have gathered during my professional life. This is the minimum you need to know while working with databases....
2019-05-12
Maximum Number of Rows for the Table Value Constructor
What is the maximum number of rows for the Table Value Constructor? And, do different uses of it behave differently?… Continue reading Maximum Number of Rows for the Table...
The...
2019-05-09
2019-05-09
1,229 reads
T-SQL bugs, pitfalls and best practices – subqueries
Itzik Ben-Gan resumes his blog series on T-SQL bugs, pitfalls, and best practices, treating an issue with correlated column references in subqueries.
The post T-SQL bugs, pitfalls and best practices...
2019-05-08
Blogs
Advice I Like: Respect
By Steve Jones
“Don’t aim to have others like you; aim to have them respect you.” –...
Blue Sky Programming – The Optimism Trap
Many years ago, before I joined Oracle, I was working on a major modernisation...
Setting Up a Mac for Data Engineering and AI Work
If you work with data pipelines, SQL, notebooks, or machine learning models, a Mac...
Forums
SQL Art, Part 4: Happy 4th of July — A British DBA's Guide to Celebrating a War We Don't Talk About
Comments posted to this topic are about the item SQL Art, Part 4: Happy...
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Question of the Day
BIT_COUNT I
In SQL Server 2025, I have a table (dbo.UserPermission) that contains this data:
UserID UserPermissions 15 23 37What is returned when I run this code:
select bit_count(UserPermissions) as PermissionCount from dbo.UserPermission where UserID = 3;See possible answers