Skip to main content

Serial number or row number



Sometimes there would be a requirement to add serial number (or) row number to the result set.

Example: The requirement would be to select some columns from the database tables along with Serial Number like below

SNo
Customer_Name
Customer_Phone_Number
1
aaa
xxx-xxx-xxxx
2
bbb
xxx-xxx-xxxx

So, in this post we will see how we can select that using T-SQL on Microsoft SQL Server 2008

We can achieve this in several ways:

1) Using Row_Number()
 

Row_Number() Returns the sequential number of a row within a partition of a result set, starting at 1 for the first row in each partition. 

T-SQL Script:

        SELECT ROW_NUMBER() OVER (ORDER BY CUSTOMER_ID) AS [S.No]
                        ,CUSTOMER_NAME
                        ,CUSTOMER_PHONE_NUMBER
        FROM database.dbo.tblTableName


2) Using Identity(Property)
 

Identity() property creates an identity column in the table. So, first we need to create a temporary table with [S.No] column on it and then we will select the required columns from the temporary table.

T-SQL Script:
 
        SELECT IDENTITY(INT,1,1) AS [S.No]
                       ,CUSTOMER_NAME
                       ,CUSTOMER_PHONE_NUMBER
        INTO #tempTable
        FROM database.dbo.tblTableName


        --Now, the result set 


        
SELECT [S.No]
                       ,CUSTOMER_NAME
                       ,CUSTOMER_PHONE_NUMBER
        FROM #tempTable

Comments

Popular posts from this blog

How to encrypt and decrypt Table data in postgres

For encrypting and decrypting , we must use the bytea data type on the column which we implement. Bcoz bytea will use the pgcrypto method by default. However, you will need to create the pgcrypto extension to enable these functions as they are not pre-defined in PostgreSQL/PPAS. Example CREATE EXTENSION pgcrypto; CREATE TABLE userinfo (username varchar(20), password bytea); >>    Inserting the data in an encrypted format INSERT INTO userinfo VALUES(' suman ',encrypt('111222','password','aes')); select * from userinfo ; >>    Retrieving the data as decrypted format SELECT decrypt(password,decode('password','escape'::text),'aes'::text) FROM userinfo; Thanks for reading Plz dont forget to like Facebook Page.. https://www.facebook.com/pages/Sql-DBAcoin/523110684456757

How to recover msdb database from suspect mode

 It was Monday 9 th Jun 47 degr. temperature of Delhi-NCR. Temperature was like boiling me and database. When I reached my office( @ 8.45 am) got an alert from one of Server. “MSDB is in suspected mode” At the same time comes in my mind, this issue will boil me today.. I just tried to cool my self through cold drink then connected server from my local system using windows authentication mode..

SQL71562: external references are not supported when creating a package from this platform

Last week I got this error from one of developer who was trying to deploy his project from Testing server to SQL Azure QA server. He was using “Deploy Database to SQL Azure” option from SSMS Tool-Task option. After connecting to SQL Azure portal when operation started to deployment below errors occurs. Validation of the schema model for data package failed. Error SQL71562: Error validating element xx.xxx.xx:function .dbo.xxx has an unresolved refrence to object xx.dbo.xxxx external refrences are not supported when creating a package from this platform . Reason: The reason of the this error was; some functions of project was dependent on master database and only single database was being deploy to SQL Azure. DACFx must block Export when object definitions (views, procedures, etc.) contain external references, as Azure SQL Database does not allow cross-database external references So, this error was coming. Solution : I suggested him to create those function to locally