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
Trace Flag 1448 – Lessons from a Technical Interview
By gbargsley
In SQL Server environments where transactional replication runs alongside Always On Availability Groups (AGs),...
Disable the sa login in SQL Server (and sleep better)
Disable the sa login in SQL Server (and sleep better)If you run SQL Server...
Leadership in Times of Change: Guiding Teams Through Uncertainty, Disruption, and Transformation
By Chris Yates
Change is inevitable. What separates thriving organizations from those that falter is not the...
Forums
Create an HTML Report on the Status of SQL Server Agent Jobs
Comments posted to this topic are about the item Create an HTML Report on...
Be Wary of Data
Comments posted to this topic are about the item Be Wary of Data
Locking Hierarchies
Comments posted to this topic are about the item Locking Hierarchies
Question of the Day
Locking Hierarchies
You have a table [dbo].[orders] without a Clustered Index (Heap). The table does not have any other nonclustered indexes! You rund the following command in Read Committed Isolation Level:
SELECTo_orderdate,
o_orderkey,
o_custkey,
o_storekey
FROMdbo.orders
WHEREo_orderkey = 3877;