Describes how you can link SQL Server with many different data sources like a directory as Active Directory Application Mode, a Microsoft Indexing Server catalog, a Microsoft Access database and a Microsoft Excel spreadsheet. Also explains how to query linked servers using the OPENQUERY command.
2007-08-21
2,712 reads
Remi Gregoire describes one of the Support nightmares, the vice of RBAR Database Programming, 'Row By Agonising Row', and illustrates how the effect of RBAR can sometimes be felt only years after an application is released, when the database supporting the application grows.
2007-08-16
3,179 reads
There is often a need to work with time data representing various events and then reporting on them in SQL Server applications. However T-SQL doesn't necessarily make this easy. However new author Joe Lynds brings us an article on some advanced T-SQL to do just that.
2007-08-15
12,162 reads
Summarizing data in a SELECT statement using a GROUP BY clause is a very common area of difficulty for beginning SQL programmers. In Part I of this two part series, we'll use a simple schema and a typical report request to cover the effect of JOINS on grouping and aggregate calculations, and how to use COUNT(Distinct) to overcome this.
2007-08-09
5,253 reads
Robyn and Phil decide to build an RSS newsfeed in TSQL, using the power of SQL Server's XML.
2007-07-31
1,412 reads
Be sure you don't end up with arithmatic errors in your identity columns from a SQL Server MVP.
2007-07-26
2,984 reads
In systems that require, for auditing purposes, advanced logging and reproducibility of reports between runs, a straightforward update, insert, or delete may be counter-productive. In such circumstances, a bitemporal model is necessary
2007-06-04
2,464 reads
One of the very common questions posted about T-SQL is how to traverse a hierarchy in a set based manner. New author Craig Hatley brings us his techniques for handling the common scenario of employees and managers.
2008-05-16 (first published: 2007-06-04)
5,915 reads
COALESCE() accepts a series of values and a value to use in the event that all items in the list are null; then, it returns the first not-null value. This tip describes two creative uses of the COALESCE() function in SQL Server.
2007-06-01
5,777 reads
You can use arithmetic operators in date/time calculations in SQL Server, but sometimes the date/time functions provided by Microsoft are the better option. Follow a few scenarios that demonstrate when arithmetic operators are safe and when they are risky.
2007-05-28
7,463 reads
By Vinay Thakur
Continuing from Day 3 where we covered LLM models open/closed and their parameters, Today...
By Steve Jones
One of the nice things about Flyway Desktop is that it helps you manage...
By HeyMo0sh
Microsoft Fabric (not to be confused with the more general term “fabric” in DevOps)...
I'm fairly certain I know the answer to this from digging into it yesterday,...
Hi Team, I am trying to refresh the Azure Synapse Dedicated pool from production...
hi everyone I am not sure how to write the query that will produce...
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