SQL Server 2008 and Data Compression
One of the more exciting new features in SQL Server 2008 is data compression and Nicholas Cain talks a bit about how this works and how to determine if it fits in your environment.
2009-01-07
10,301 reads
Nicholas Cain
Checking Your Database Fragmentation Level
Fragmentation in SQL Server is a huge debate. Does it matter? How much is too much? What should you do? In any case, new author Nicholas Cain has put together a system that allows him to keep track of the levels of fragmentation as well as defragment those tables when he feels they are getting too spread apart.
2007-10-02 (first published: 2004-06-04)
34,772 reads
SQL Blocking and Blocked Proc + Notifi - Part2
Based on the script by Paul Delmarche ( http://www.sqlservercentral.com/scripts/contributions/1482.asp ).Updated to now include the spid, username, blocked and blocking SQL statements in the email (still logged to table).Schedule the procedure to run at defined intervals (I use 2 minutes)
2005-05-12 (first published: 2005-05-02)
1,436 reads
2004-04-05
1,681 reads
Backup All Databases
This script will back up all databases (other than those listed to not be included) to a given disk location. It can also be modified to back up transaction logs, or to use a dump device instead of a disk location.
2004-04-02
1,076 reads
Retrieve Index Information For All Tables - V2
This is an update to sp_helpindex, it allows you to pass the table name and whether you want to retrieve clustered, nonclustered or primary key indexes for a table. Using the sp_msforeach table will allow you to do this for all tables in a database. Inserting the data into a table will allow you to […]
2004-03-04
1,020 reads
Retrieve Index Information For All Tables
This is an update to sp_helpindex, it allows you to pass the table name and whether you want to retrieve clustered, nonclustered or primary key indexes for a table. Using the sp_msforeach table will allow you to do this for all tables in a database. Inserting the data into a table will allow you to […]
2004-03-01
1,291 reads
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Fun with JSON II
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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