Prevent SQL Server Blocking using Lock_Timeout
In this tip we look at a way to minimize the length of blocking using SQL Server lock timeout.
2020-01-24
T-SQL
T-SQL script to purge all the tables including foreign key references
T-SQL script to purge all the tables including foreign key references. The script has been made smart enough to use TRUNCATE wherever there is no foreign key reference and to use DELETE wherever there is foreign key reference.
2019-12-10
2,402 reads
SQL Server Name Convention and T-SQL Programming Style
There are only two hard things in Computer Science: cache invalidation and naming things -- Phil Karlton The recommendations in this article are not the ultimate truth. Please consider this article as a rule template that you can adapt to your needs. A naming convention is a set of rules for choosing the character sequence to […]
2019-12-10
23,303 reads
Function and Queries to Convert Hierarchical Adjacency to Nested Json Arrays
This script converts hierarchical adjacency into nested json rows which contain the recursive "downlines" of each node. The table-valued function treats each row in the original adjacency as the root node in a recursive common table expression.
2019-11-25 (first published: 2019-11-24)
701 reads
Function and Queries to Convert Hierarchical Adjacency to Nested Json Arrays
This script converts hierarchical adjacency into nested json rows which contain the recursive "downlines" of each node. The table-valued function treats each row in the original adjacency as the root node in a recursive common table expression.
2019-11-12 (first published: 2019-11-08)
1,942 reads
T-SQL query to copy data from one database to another database
T-SQL query to copy the rows of all the tables from one database to another database only if they have rows in Source DB and exact same Schema in both Source and Destination DB.
2019-11-07 (first published: 2019-10-30)
5,079 reads
T-SQL query to get the latest available backup chain
T-SQL query to return the latest available database backup chain (Full, Differential and Log) of individual databases along with their backup size and compressed size.
2019-11-08 (first published: 2019-10-30)
3,163 reads
Some T-SQL INSERTs DO Follow the Fill Factor! (SQL Oolie)
With origins from the world of “Submarine ‘Dolphin’ Qualification” questions, an “Oolie” is a difficult question to answer, or the knowledge or fact needed to answer such a question, that may or may not pertain to one's duties but tests one's knowledge of a system or process to the limit. Introduction Contrary to what many […]
2019-08-08
6,103 reads
SQL and T-SQL for Beginners in 229 minutes
The the basics of SQL and T-SQL in this short course of videos that explain some of the concepts.
2019-07-16
26,189 reads
Blogs
Using Flyway with Feature Flags
By Steve Jones
There is a nice article at Harness.io on their use of feature flags and...
Microsoft Build event announcements on Fabric
By James Serra
There were a number of Microsoft Fabric announcements at Microsoft Build yesterday that I wanted to...
Forums
Calculating moving moving averages for different ranges in one query
I have this query, which is gives result I want (may be not, i...
Monitoring if something is deleted in DB
Hello, I have long-term task, which came one year ago, and just now I...
LOGON Trigger Count
Comments posted to this topic are about the item LOGON Trigger Count
Question of the Day
LOGON Trigger Count
I have the need in SQL Server 2022 to create a complex set of checks for logins. I want to use Longon triggers, but I'd like to separate out logic. How many Logon Triggers can I create?
See possible answers