Every Database Has Problems
The magic way to get better performance from your system is to write better code from the start.
2026-04-22
175 reads
multi-platform
Formatting Dates and Times: The SQL Dialect Divide
If you’ve ever had to format dates and times in SQL, you’ve probably come across one of the most jarring realities of working across platforms: every major RDBMS does it differently and sometimes confusingly. What’s a TO_CHAR() in Oracle becomes FORMAT() or CONVERT() in SQL Server, and its sort of the same in PostgreSQL… but […]
2025-07-11
248 reads
SQL Identity Column Gaps and Conversion in SQL Server, Oracle and PostgreSQL
Learn about identity column sequence gaps and changing an existing column to an identity column in SQL Server, Oracle and PostgreSQL.
2022-01-19
SQL String functions in SQL Server, Oracle and PostgreSQL
In this article we look at how to use string functions to concatenate, replace, trim and get substrings in SQL Server, Oracle and PostgreSQL.
2021-10-25
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
Multi-Platform Mobile Development with PhoneGap
Of course it seems a great idea to have your application on all the main mobile platforms as well as on the desktop. However, as Arkadiusz Pachucy knows all too well, this can ultimately leave you with a full-scale maintenance nightmare. In this article he looks at whether technologies like PhoneGap/Cordova or Adobe Air could be the perfect compromise - and if so, what frameworks to use.
2015-08-24
3,088 reads
Blogs
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Having some performance issues with linked server query
When I run my query from DW, which uses a linked server, it times...
Implementing Type 4 Slowly Changing Dimensions in SQL Server
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The Disabled Index
Comments posted to this topic are about the item The Disabled Index
Question of the Day
The Disabled Index
I run this code on SQL Server 2022.
CREATE TABLE Drink
(
drinkid INT NOT NULL
CONSTRAINT DrinkPK PRIMARY KEY CLUSTERED,
drinkname VARCHAR(20),
rating NUMERIC(2, 1)
)
GO
INSERT INTO Drink
(
drinkid,
drinkname,
rating
)
VALUES
(1, 'Margarita', 4.5),
(2, 'Mojito', 4.3),
(3, 'Old Fashioned', 4.7),
(4, 'Martini', 4.4),
(5, 'Cosmopolitan', 4.2)
GO
ALTER INDEX drinkpk ON dbo.drink DISABLE
GO
SELECT * FROM dbo.Drink
GO
What is the result? See possible answers