Querying Microsoft SQL Server : Defining Variables
Querying Microsoft SQL Server : Defining Variables: Defining Variables in SQL Server: Like other programming languages T-SQL allows to defining your...
2013-03-13
843 reads
Find Transaction Log information
Transaction Log in SQL server records all operation on database.This recoring depends on Recovery Model selected for database.You can find...
2013-03-08
635 reads
Search all running SQL Server instances over LAN
Sometimes you need to know how many and what instances of
SQL Server running in your organization over Network. You can...
2013-02-22
2,363 reads
Generate Random Passwords using T-SQL
Use following script to generate random Passwords
DECLARE @id int,@list varcharSET @list ='abcdefghijkmnopqrstuvwxyzABCDEFGHIJKLMNPQRSTUVWXYZ23456789.,-_!$@#%^&*'selectreplace(SUBSTRING(CONVERT(varchar(255),NEWID()),8, 8),'-','')as RANDOM
Example:
Suppose you have a table tblUser with columns[id],[userid],[password].
CREATETABLE [dbo].[tblUser]( ...
2013-02-12
4,849 reads
Handling Null Values in SQL Server
What is NULL?
In SQL, A Null is an unknown or undefined value. Some interesting
operations on NULL.
--query --resultselect 3*NULL --NULLselect 3+NULL ...
2013-02-05
525 reads
Frequently asked SQL Server Queries
Data to test:
CREATETABLE [dbo].[emp]( [emp_id]
[nchar](10)NULL, [emp_name]
[nchar](10)NULL, [salary]
[int] NULL)ON [PRIMARY] insert emp( emp_id,emp_name,salary ) select'1','ABC',-20000 insert emp( emp_id,emp_name,salary ) select'2','XYZ',-5000 insert emp( emp_id,emp_name,salary ) select'3','PQR',-7800 insert emp( emp_id,emp_name,salary...
2013-02-04
748 reads
DBCC Commands for SQL Server
DBCC Commands:
DBCC commands are most useful for
performance and troubleshooting.
The DBCC Commands are used in Maintenance, Informational use, Validation on a
database,...
2013-01-28
2,025 reads
SQL Server
What is SQL Server?Microsoft SQL Server is Relational database management system (RDBMS) developed and owned by Microsoft. It is a software...
2013-01-28
419 reads
Frequently asked Scripts during Interviews
1.Select no of Months between two dates:
SELECT DATEDIFF(MONTH,'4/1/2011','01/23/2013')+ CASE WHENDAY('4/1/2011')<DAY('01/23/2013') THEN 1 ELSE 0 END
Output:
----------------
22
2.What will be the
output of following...
2013-01-24
494 reads
FOR XML Clause
FOR XML CLAUSE: Sometimes we need to data in form of XML from
Database.SQL Server provide FOR XML Clause. For XML clause...
2012-12-26
766 reads
Blogs
The PASS Summit on Tour in the Netherlands
By Steve Jones
The PASS Summit goes on tour this year, with the final date the first...
Azure SQL Managed Instance: Boost Performance with Read-Scale Out
By Arun Sirpal
The Business Critical tier of Azure SQL Managed Instance offers the read-scale out feature...
Free Cloud Environment Setup: A Beginner’s Guide
By Rohit Garg
Cloud computing is essential for modern development, data storage, and scalable applications. Setting up...
Forums
How a Legacy Logic Choked SQL Server in a 30-Year-Old Factory
Comments posted to this topic are about the item How a Legacy Logic Choked...
Execution plan shows enormous number of records
The problem was reported to us by a customer. They shared a graphic execution...
T-SQL to SELECT rows where 2 columns in TBL_A do not exist in TBL_B
I have 2 tables: TBL_A and TBL_B each with the same 2 columns; ServerName...
Question of the Day
The Updated Columns List
I have this table in SQL Server 2022:
CREATE TABLE CustomerLarge (CustomerID INT NOT NULL IDENTITY(1, 1) CONSTRAINT CustomerLargePK PRIMARY KEY CLUSTERED , CustomerName VARCHAR(20) , CustomerContactFirstName VARCHAR(40) , CustomerContactLastName VARCHAR(40) , Address VARCHAR(20) , Address2 VARCHAR(20) , City VARCHAR(20) , CountryCode CHAR(3) , Postal VARCHAR(20) ) GOIf I check the columns_updated() function return in a trigger, what is the data returned? See possible answers