Like ancient Gaul, SQL is divided into three sub- languages. The DDL (Data Declaration Language) declares the data. This is where we find the data types, constraints, references and other structures that have to do with how the data stored . The DML (Data Manipulation Language) uses those declarations to change their contents or to invoke them. It does not change structures and schema objects.
2024-12-04
This article looks at how to use SQL IS NULL and SQL IS NOT NULL operations in SQL Server along with use cases and working with NULL values.
2024-12-02
Welcome to part 2 of our Demystifying Continuous Integration vs. Continuous Delivery series.
2024-11-29
This tip explores leveraging existing SQL Server stored procedures within the Microsoft GraphQL API.
2024-11-27
By now, pretty much everyone has heard the stories about the first computers. They were huge, cost a fortune, required incredible amounts of air conditioning, and perhaps more importantly, ran batch jobs submitted on punched cards and magnetic tape. But even before we had these dinosaurs, there were E.A.M (electric accounting machine) units.
2024-11-22
Let’s say we have a couple of update statements we need to run every 15 minutes in the Stack Overflow database, and we’ve built indexes to support them:
2024-11-20
Learn how to use Pandas an open-source library for analyzing and manipulating tabular data in Python along with several examples.
2024-11-18
In part three of this series, Boris Novikov looks at how data is saved and modified in a temporal database and what kind of integrity constraints are needed for temporal tables. If you haven’t seen parts one and two, don’t worry! Links are provided in the article, and we recommend checking them out first.
2024-11-15
Learn how to join tables together when using the GraphQL API with Microsoft Fabric in this step-by-step article.
2024-11-13
Let’s start with the Stack Overflow database (any size will work), drop all the indexes on the Users table, and run a delete:
2024-11-11
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Comments posted to this topic are about the item Not Just an Upgrade
I am doing development work on a database and want to keep a backup so I can reset my database. I make some changes and want to restore over top of my changes. When I run this code, what happens?
USE Master BACKUP DATABASE DNRTest TO DISK = 'dnrtest.bak' GO USE DNRTest GO CREATE TABLE MyTest(myid INT) GO USE master RESTORE DATABASE DNRTest FROM DISK = 'dnrtest.bak' WITH REPLACESee possible answers