COALESCE(), ISNULL() , NULLIF() and alternatives in SQL Server, Oracle and PostgreSQL
In this article we look at the SQL functions COALESCE, ISNULL, NULLIF and do a comparison between SQL Server, Oracle and PostgreSQL.
2022-04-06
Data Platform
Choosing Snowflake vs SQL Server for a Data Warehouse
In this article we take a high level view of choosing to use Snowflake in the cloud versus SQL Server on-premises and some things to consider.
2022-03-28
Install SQL Server and Oracle using PowerShell and Windows Containers
In this article we look at how to install SQL Server and Oracle using PowerShell to create development environments using Windows Containers.
2022-01-28
Create, Populate, and Subset a Pandas Dataframe from a CSV File
In this article we demonstrate how to transfer data via a CSV file from a SQL Server database to a Pandas dataframe and then subset the dataframe in Python.
2021-09-03
SQL VIEW Comparison in SQL Server, Oracle and PostgreSQL
In this article we look at the similarities and differences for views in SQL Server, Oracle and PostgreSQL. We also look at indexed views, materialized views and updatable views.
2021-08-16
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
Delete SQL Statement in SQL Server, Oracle and PostgreSQL
Learn about the differences and similarities when deleting data from SQL Server, Oracle and PostgreSQL with the several examples in this article.
2021-03-16
SQL Update Statement with Join in SQL Server vs Oracle vs PostgreSQL
In this article we look at the different SQL syntax you need to use when updating data when joining tables for SQL Server, Oracle and PostgreSQL.
2021-01-29
Yes and No Questions Are Not So Simple
Joe Celko explains why questions requiring yes or no answers are more complicated than you might realize in both spoken language and computing.
2019-08-22
Blogs
Reverse Engineering a Physical Model Diagram
By Steve Jones
I recently wrote about a logical diagram with Redgate Data Modeler. That was interesting,...
Prepping for Certification, Part 3 of ?
By Brian Kelley
After I have understood the details for a certification test (part 1), including format...
SQL Training Black Friday Deals
By Brian Kelley
If you're looking for particular "Black Friday" deals, here is what I've seen advertised...
Forums
Best analysis approach to reduce data type length in multiple tables
Hello SSC, I hope everyone is having a happy and safe holiday season! I...
Do you separate data/log files and TempDB files on different disks using AWS EC2
Hello, I am receiving multiple direction on deploying SQL Servers in AWS EC2. ...
Service account being in local admin in AWS EC2 environment?
Hello, I am working with a company on their database administration. I am trying...
Question of the Day
A New Operator
In SQL Server 2025, what does this code return?
SELECT '1' || '0'See possible answers