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2023-04-05
Database DevOps has come of age. Now seen as a key technical practice which can contribute to the successful implementation of DevOps, it stops the database being a bottleneck and makes releases faster and easier.
To implement it successfully, there are ten areas which teams should focus on.
2023-04-05
The CASE expression is one of the most valuable tools in your T-SQL toolbox. I use it in almost every query I write. However, there isn't a direct equivalent of CASE in DAX. Since it's a different language entirely, I don't expect it. As my grandmother used to say, I am not surprised, just disappointed. If you don't know, DAX (Data Analysis Expressions) is a language for creating custom calculations and aggregations in Power Pivot, Power BI, and other data analysis tools. Two functions in DAX come close to replicating the functionality but come with limitations. Which one of these functions should you use? Please stay tuned.
2023-04-03
Database monitoring should be as simple as possible, and yet still allow the users to drill into sufficient detail to be able to recommend a fix to the problem. The trick is to adopt a layered or 'tiered' approach.
2023-04-03
When working with Snowflake, it is important to understand the different types of tables available and when to use each one. In this tutorial, we will compare Snowflake temporary and transient tables, highlight their similarities and differences, and provide examples of when to use each type of table.
2023-03-31
Flyway's output is often overwhelmed with verbose messages, most of which we can ignore but some of which provide vital warnings about failed compilations, or useful details about what a migration or callback did. I'll show how to use some pipeline-aware PowerShell functions to filter out and save the bits we want and pass the results along in a form that is useful to the next process in the pipeline.
2023-03-29
There might be a time when you might want to return just a few rows of a result set, instead of the complete set. This might be useful if you want to just validate a selection criteria or a few rows of data. For whatever the reason the TOP clause can be used to return a specific number or a percentage of rows from a result set. This article will cover using the TOP clause in a SELECT statement and how it can be used to return a partial set of records.
2023-03-29
In this webinar, Microsoft Data Platform MVP, Grant Fritchey, is joined by our expert panel to share the pros and cons to building a monitoring system versus purchasing one.
2023-03-27
With the SQL WHERE clause in SQL Server, users can filter their query results in many ways. In most cases, we do not utilize all the options the WHERE clause provides, so we tend to forget that they exist. In this SQL tutorial, we will look at several examples of how to use the WHERE clause.
2023-03-27
This article covers the concepts of roles, schemas, grants, privileges, and owners and the similarities and differences in SQL Server, Oracle, and PostgreSQL.
2023-03-24
By HeyMo0sh
Microsoft Fabric (not to be confused with the more general term “fabric” in DevOps)...
By James Serra
I’m honored to be hosting T-SQL Tuesday — edition #192. For those who may...
By Vinay Thakur
Continuing from Day 2 , we learned introduction on Generative AI and Agentic AI,...
hi everyone I am not sure how to write the query that will produce...
Comments posted to this topic are about the item Rollback vs. Roll Forward
Comments posted to this topic are about the item Foreign Keys - Foes or...
I have some data in a table:
CREATE TABLE #test_data
(
id INT PRIMARY KEY,
name VARCHAR(100),
birth_date DATE
);
-- Step 2: Insert rows
INSERT INTO #test_data
VALUES
(1, 'Olivia', '2025-01-05'),
(2, 'Emma', '2025-03-02'),
(3, 'Liam', '2025-11-15'),
(4, 'Noah', '2025-12-22');
If I run this query, how many rows are returned?
SELECT *
FROM OPENJSON(
(
SELECT t.* FROM #test_data AS t FOR JSON PATH
)
) t; See possible answers