SQL Window Functions in SQL Server, Oracle and PostgreSQL
In this article we look at using Window Functions in SQL Server, Oracle and PostgreSQL to see the differences and similarities of the syntax.
2021-04-19
Additional Articles
Tell us about how you monitor your databases
The 2021 State of Database Monitoring survey is now open, and we want to know how you’re currently tackling your server, instance, and database monitoring. By taking part, you’ll contribute to the sole industry-wide report on database monitoring, and provide insights into how SQL Server professionals manage their estates and what challenges they face. Plus, you’ll receive an advanced copy of the report and entry to a prize draw to win a $500 Amazon voucher.
2021-04-19
Code Review & DevOps
A frequent question among those learning about DevOps is "How do we do code reviews in this automated process?". Grant Fritchey shares three options - and a word of caution - to ensure you can appropriately understand the changes happening in your system.
2021-04-16
What to monitor for SQL Server security
Keeping databases secure is critical. In this article, Robert Sheldon explains what to monitor for SQL Server security.
2021-04-16
Power Apps Canvas Apps Examples
In this article we will focus on Power Apps canvas apps which are natively optimized for mobile devices and we will look at potential use cases for canvas apps.
2021-04-15
SQL Monitor v11.1 now supports Azure SQL Managed Instances
Migration to the cloud and PaaS solutions has accelerated in the past years, and many organizations now manage hybrid estates. To reflect this, the latest release of SQL Monitor adds Azure SQL Managed Instances to its list of supported cloud platforms. This article explains how to monitor performance and activity for Azure SQL Managed Instances using SQL Monitor, with advice on monitoring hybrid estates and migrating from on-prem to Azure SQL Managed Instance.
2021-04-15
Digital Event: Innovate Today with Azure SQL
Join Microsoft's Rohan Kumar, and a full team of Azure SQL experts, for Innovate Today with Azure SQL. This free digital event from Microsoft lets you choose the sessions and technical demos that are most interesting to you and focus on the capabilities and possibilities that you want to learn more about.
2021-04-14
Oracle sequences: The basics
Oracle sequences can be used to create artificial IDs for a table. In this article, Jonathan Lewis explains how they work under-the-hood.
2021-04-14
Export SQL Server Data to Excel and Add New Columns with C#
Learn how to export data from SQL Server into Excel and programmatically add new columns to the spreadsheet using C#.
2021-04-13
Have your say about PASS Summit 2021
Redgate has committed to organizing a free virtual Summit for the PASS Community this fall. To help guide the format and provide you and the data platform community with the best virtual event experience possible, we'd appreciate your input. As a thank you for your feedback you could win a Peloton Bike or $3,000 (the equivalent in your local currency) to donate to your chosen charity.
2021-04-13
Blogs
Free webinar – Tackling the Gaps and Islands Problem with T-SQL Window Functions
I’m hosting a free webinar at MSSQLTips.com at the 19th of December 2024, 6PM...
Counting Groups with Window Functions: #SQLNewBlogger
By Steve Jones
I looked at row_number() in a previous post. Now I want to build on...
The query processor ran out of internal resources and could not produce a query plan – When You’ve Managed to Confuse SQL With a Crazy IN Clause.
Recently I received a cry for help over Teams. The issue was that an...
Forums
How to determine if a DB is currently being used
Hi - I'm looking for advice regarding the best & quickest way to establish...
Data cleansing/conversion tool HPE
Hello. I am looking for a tool Data cleansing/conversion, was recommended HPE any...
System views in a contained availability group
I have a query that runs in a job to check on orphaned users....
Question of the Day
The LAGging NULL
I have this data in a SQL Server 2022 table:
player yearid team HR Alex Rodriguez 2012 NYY 18 Alex Rodriguez 2013 NYY 7 Alex Rodriguez 2014 NYY NULL Alex Rodriguez 2015 NYY 12 Alex Rodriguez 2016 NYY 9If I run this code, what are the results returned in the hrgrowth column?
SELECT player , yearid , hr , hr - LAG (hr, 1, 0) IGNORE NULLS OVER (ORDER BY yearid) AS hrgrowth FROM dbo.playerstats;See possible answers