Derived Table In Sql Server
Derived tables:- Derived tables are the tables which are created on the fly with the help of the Select statement. It is...
2012-04-15
18,008 reads
Vivek's SQL Notes
Pivot and Unpivot table in SQL SERVER
Pivot Table:- Pivot tables are used to summarize and display the data, specially in case of report data by means...
2012-04-14
39,589 reads
SQL Server- Output clause
Output Clause:- The SQL SERVER 2005 gives us an Output Clause which gives us the information about each row affected by the...
2012-01-22
2,187 reads
CTE command In Sql Server
Common table expression (CTE):- Common table expression or CTE can be described as the temporary, named record set return by...
2012-01-17
4,983 reads
SQL Server-Table Variable
Table variable:- SQL Server provides an variable known as table variable which is used to store data in a similar way as we...
2012-01-07
9,413 reads
SQL Server - Local temporary table
Local temporary table:- Local temporary table is created in the tempdb and it is visible to the current user's session...
2012-01-07
8,717 reads
SQL Server - Global temporary tables
Global temporary table:- Global temporary table is created in the tempdb and it is visible to all other sessions as well. Global...
2012-01-07
48,466 reads
How to remane a Table in Sql Server
To rename a column in a SQL Table following command can be reused:
SP_RENAME 'old table name', 'New table name'
For example,...
2012-01-02
1,849 reads
How to change the database collation
To change the collation of an database following commands can be used:
ALTER DATABASE [database name] SET SINGLE_USER WITH ROLLBACK IMMEDIATE
ALTER DATABASE [database name] COLLATE Newcollation
ALTER DATABASE [database name] SET MULTI_USER
For example , suppose if the name...
2012-01-02
2,331 reads
SQL Triggers - An Introduction
Introduction
Triggers can be defined as the database objects which perform some action for automatic execution whenever users try to do execute...
2011-11-16
12,905 reads
Blogs
AI: Blog a Day – Day 4: Transformers – Encoder, Decoder, and Attention
By Vinay Thakur
Continuing from Day 3 where we covered LLM models open/closed and their parameters, Today...
Flyway Tips: Multiple Projects
By Steve Jones
One of the nice things about Flyway Desktop is that it helps you manage...
What DevOps Look Like in Microsoft Fabric
By HeyMo0sh
Microsoft Fabric (not to be confused with the more general term “fabric” in DevOps)...
Forums
Can an Azure App Service Managed Identity be used for SQL Login?
I'm fairly certain I know the answer to this from digging into it yesterday,...
Azure Synapse database refresh
Hi Team, I am trying to refresh the Azure Synapse Dedicated pool from production...
how to write this query?
hi everyone I am not sure how to write the query that will produce...
Question of the Day
Fun with JSON I
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