T-SQL

Streamlining Data Warehouse Testing with Efficient Table Management When testing a data warehouse, a common challenge is managing large datasets effectively. Often, you need to reset tables to a clean state, ensuring consistent testing environments. The most efficient way to clear a table is using the SQL command TRUNCATE TABLE. …

Title: Advanced T-SQL Window Functions: A Comprehensive Guide with Examples Introduction Transact-SQL (T-SQL), Microsoft’s proprietary extension of the SQL language, provides a rich set of tools for managing databases on SQL Server and Azure SQL Database. Among these, window functions have gained attention due to their ability to perform complex …

Introduction SQL Server is a powerful relational database management system developed by Microsoft. It is widely used in various industries for data storage, processing, and retrieval. However, like any other system, SQL Server can sometimes consume more CPU resources than necessary, leading to slower performance and reduced efficiency. This article …

Wat is een Postcodetabel? Een postcodetabel is in wezen een database van alle postcodes in een bepaald land, in dit geval Nederland. Het omvat niet alleen de postcodes zelf, maar vaak ook andere nuttige gegevens zoals straatnamen, huisnummers, coördinaten en andere relevante informatie. Deze informatie kan worden gebruikt om klantgegevens …

SQL Server Disk Performance Metrics: An In-depth Guide Understanding your SQL Server’s disk performance metrics is crucial for maintaining an efficient, high-performing database. These metrics provide insights into how well your storage system is performing and where there might be bottlenecks or problems that need to be addressed. In this …

Sure, here is a draft for the blog post: 10 Common Mistakes in SQL Server Performance Optimization and How to Avoid Them Microsoft SQL Server is a powerful, robust and feature-rich relational database management system (RDBMS). Despite its capabilities, improper usage or configuration can lead to suboptimal performance. Here are …

Introduction Microsoft Power BI is a suite of business analytics tools that enables organizations to analyze data and share insights. Through its comprehensive dashboards, interactive reports, and compelling visualizations, businesses can transform raw data into meaningful information to drive strategic decisions. Industry leaders across various sectors are harnessing the power …

From Excel to Power BI: Transitioning to Advanced Analytics Over the past few decades, Excel has firmly established itself as a cornerstone of data management, manipulation, and visualization. However, in the evolving world of data analytics, tools like Microsoft Power BI have emerged as powerful alternatives, offering advanced functionalities that …

Making Sense of Time: An Introduction to SQL Server’s DateTime Functions When it comes to managing and manipulating data, there’s no doubt that SQL Server is one of the most popular choices. One of the reasons for its popularity is the rich set of functions it provides for a variety …

Wanneer je met buttons werkt in Power BI om bijvoorbeeld met bookmarks te werken is het handig om te zien welke “view” actief is in je rapport. Het lijkt een beetje op het principe van een web navigatie. Door de actieve bookmark op de button zichtbaar te maken wordt het …

Using Microsoft SQL Server, you cannot truncate or drop a table with a foreign key constraint. For example, when you have a client table and a country table. When the client table has a foreign key constraint to the country table, you cannot truncate the country table in this situation …

I need to setup a weekly report for one of my customers. The report can be manually run by executing a T-SQL statement and copy the result to Excel. After copying, it’s emailed to the client. By using sp_send_dbmail attachment options, you can automate this process.

In my daily work, I need to calculate and report the age of people very often. There are a couple of ways to calculate the age and will give you the right result. I do not recommend a SQL Function to to this. SQL Functions are performing very slow, especially …

This article will offer you a way to calculate a 4 week moving total in SQL using SQL Server. There are more ways to Rome but this is a way you can use to calculate it using a date dimension.