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
T-SQL
2019-05-09
1,221 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
Temporary Staging Tables
Watch this week’s episode on YouTube. SQL Server Spool operators are a mixed bag. On one hand, they can negatively impact performance when writing data to disk in tempdb....
The...
2019-05-07
T-SQL Tuesday #114 – Puzzle Party
A few years back I started running regular SQL workshops in my workplace. Teaching beginners the basics of querying databases with SQL, as well as more advanced topics for...
The...
2019-05-07
Splitting Strings With OPENJSON
Starting with SQL Server 2016, Microsoft provided a STRING_SPLIT function. It is a table-valued function that splits a string into rows of substrings, based on a specified separator character....
2019-05-07
The Silent Bug I Find in Most Triggers
I don’t have a problem with triggers. They get the job done when you need to implement business logic in a hurry, and you’re not allowed to change the...
2019-05-06
Parsing JSON Data In SQL Server
Microsoft added support for JSON data beginning with SQL Server 2016. JSON is an open-standard file format consisting of attribute–value pairs and array data types. It is commonly used...
2019-05-06
Using IGNORE NULLS With SQL Window Functions to Fill Gaps
I found a very interesting SQL question on Twitter recently
2019-04-26
Removing multiple patterns from a string
Recently one of my clients had a request that was a challenge to do effectively. I don’t think it’s a very common requirement but I still decided to blog...
2019-04-21
Blogs
The Cost of Not Having a DBA
By Kevin3NF
Does skipping a DBA save money? Wait until your system grinds to a halt,...
Who are you? Building an identity map.
By Brian Kelley
I admit that until I read the article, Who are you as a Leader?,...
Call a Fabric REST API from Azure Data Factory
Suppose you want to call a certain Microsoft Fabric REST API endpoint from Azure...
Forums
How to update using data from three tables?
I am in the process of migrating from MySQL to SQL Server. I have...
Select Returning Blank Rows
I have the following select statement --#1 Select supplier, s.refnum, desc from supplier as...
How to update a history table with changes.
Good morning to all. I am a novice when it comes to SQL so...
Question of the Day
Replacing a NULL II
What is returned from this code in SQL Server 2022?
DECLARE @value INT = NULL , @value2 VARCHAR(20) = NULL; SELECT COALESCE (@value, @value2, 100.5) AS Result; GOSee possible answers