Index on multiple columns for performance
A short piece on indexing using multiple columns. For those of you that have 10 single column indexes, read a little about why you might choose to index on multiple columns.
2004-09-20
2,877 reads
Additional Articles
Messaging Patterns in Service-Oriented Architecture, Part 1
A service oriented architecture seeks to decouple some of the tight connections normally built between systems and components. Here's a great overview on how messaging between systems can be setup from MSDN.
2004-09-20
1,216 reads
Microsoft, SQL Server and Performance Management: The Business Scoreca
The first article looking at the new BI scorecard technology from Microsoft. This allows you to quickly deploy some easy reports on your OLAP system. From datawarehouse.com.
2004-09-16
1,121 reads
Redistributing DTS with your program
Have you ever wanted to run DTS on a workstation or server that doesn't have SQL installed? Here's the items you need to move to make it happen.
2004-09-15
1,549 reads
Radio Buttons for Reporting Services Reports
This article will detail a way to display radio buttons in your reports. Radio buttons are commonly used in surveys for things such as displaying a selected ranking from 1 to 10 or from Strongly Agree to Strongly Disagree.
2004-09-14
2,882 reads
SQL Server 2000 Security - Part 10 - Auditing
A basic look at various ways in which you can perform some server auditing with SQL Server 2000.
2004-09-13
1,252 reads
Microsoft Baseline Security Analyzer V1.2.1
The Microsoft Baseline Security Analyzer has been updated to work with Windows XP SP2. If you use this tool be sure that you get the update to work with new patches and vulnerabilities.
2004-09-10
3,864 reads
Changing Domains for a SQL Server 2000 Failover Cluster
This step-by-step article describes the steps you must use to change domains for an existing SQL Server 2000 Failover Cluster.
2004-09-09
698 reads
Pie Charts in Reporting Services
Reporting Services is one of the hottest new tools that adds on to SQL Server. William Pearson continues his series on this new product with a look at how to add pie charts to your report.
2004-09-07
2,338 reads
Schemas in ADO.NET 2.0
When you decide on a connection string and add a Data Connection, each Data Connection also displays a tree of information about the database objects (like tables, views, and stored procedures) visible directly through the connection. But where does this information come from? Read this article from MSDN on the new features of ADO.NET.
2004-09-06
853 reads
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Fun with JSON II
Comments posted to this topic are about the item Fun with JSON II
Changing Data Types
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Answering Questions On Dropped Columns
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Question of the Day
Fun with JSON II
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 t1.[key] AS row,
t2.*
FROM OPENJSON(
(
SELECT t.* FROM #test_data AS t FOR JSON PATH
)
) t1
CROSS APPLY OPENJSON(t1.value) t2; See possible answers