TECHTalksPro
  • Home
  • Business
    • Internet
    • Market
    • Stock
  • Parent Category
    • Child Category 1
      • Sub Child Category 1
      • Sub Child Category 2
      • Sub Child Category 3
    • Child Category 2
    • Child Category 3
    • Child Category 4
  • Featured
  • Health
    • Childcare
    • Doctors
  • Home
  • SQL Server
    • SQL Server 2012
    • SQL Server 2014
    • SQL Server 2016
  • Downloads
    • PowerShell Scripts
    • Database Scripts
  • Big Data
    • Hadoop
      • Hive
      • Pig
      • HDFS
    • MPP
  • Certifications
    • Microsoft SQL Server -70-461
    • Hadoop-HDPCD
  • Problems/Solutions
  • Interview Questions

Tuesday, December 27, 2016

SELECT TOP COUNT dynamically

 Chitchatiq     12/27/2016 04:21:00 PM     SQL Server     No comments   

Scenario: Some times we want to make TOP Count as Dynamically then passing parameter to TOP command will not work. We have to add parameter with parenthesis[ ]

SELECT   TOP COUNT dynamically

IF OBJECT_ID('[dbo].[sample]','U') IS NOT NULL
DROP TABLE dbo.sample

CREATE TABLE dbo.sample
(ID int,
name varchar(10));

INSERT INTO dbo.sample
SELECT 1,'a'
UNION
SELECT 2,'b'
UNION
SELECT 3,'c'
UNION
SELECT 4,'d'
UNION
SELECT 5,'e'
UNION
SELECT 6,'f'

--SELECT * FROM dbo.sample

DECLARE @noOfRows int
set @noOfRows = 3

SELECT TOP @noOfRows *  from dbo.sample -- Here it will through the rows 
SELECT TOP (@noOfRows) *  from dbo.sample -- This script will execute without any errors
Result:
 
Keywords: select top dynamically,dynamically select top sql,t sql select top dynamically,SELECT TOP COUNT dynamically
  • Share This:  
  •  Facebook
  •  Twitter
  •  Google+
  •  Stumble
  •  Digg
Email ThisBlogThis!Share to XShare to Facebook
Newer Post Older Post Home

0 comments:

Post a Comment

Popular Posts

  • How to check if any view has metadata binding errors after DB refresh
    Scenario:  In my recent project after Source Database refresh we need to push to target server. We have views created in separate data...
  • TEZ
    YARN - Giant leap in hadoop. Has provided facility to use “App Master” to control the process flow. So how can we leverage this?? ...
  • SELECT TOP COUNT dynamically
    Scenario: Some times we want to make TOP Count as Dynamically then passing parameter to TOP command will not work. We have to add paramete...
  • Error: Service 'userhome' check failed: java.io.FileNotFoundException: File does not exist: /user/admin
    Resolution: Create Admin account under HDFS user folder using below command sudo -u hdfs hadoop fs -mkdir /user/admin
  • Greenplum Best Practises
    Best Practices: A distribution key should not have more than 2 columns, recommended is 1 column. While modeling a database,...

Facebook

Categories

Best Practices (1) Big Data (5) BigData&Hadoop (6) DAG (1) Error 10294 (1) external tables (1) File Formats in Hive (1) Greenplum (3) Hadoop (5) Hadoop Commands (1) Hive (4) Internal tables (1) interview Questions (1) Managed tables (1) MySQL Installation (1) ORCFILE (1) org.apache.hadoop.hive.ql.exec.MoveTask (1) Powershell (1) Problems&Solutions (15) RCFILE (1) return code 1 (1) SEQUENCEFILE (1) Service 'userhome' (1) Service 'userhome' check failed: java.io.FileNotFoundException (1) SQL Server (27) sqoop (2) SSIS (1) TEXTFILE (1) Tez (1) transaction manager (1) Views (1) What is Hadoop (1)

Blog Archive

  • December (1)
  • November (1)
  • October (2)
  • September (6)
  • August (1)
  • July (3)
  • March (1)
  • February (8)
  • January (4)
  • December (9)
  • August (4)
  • July (1)

Popular Tags

  • Best Practices
  • Big Data
  • BigData&Hadoop
  • DAG
  • Error 10294
  • external tables
  • File Formats in Hive
  • Greenplum
  • Hadoop
  • Hadoop Commands
  • Hive
  • Internal tables
  • interview Questions
  • Managed tables
  • MySQL Installation
  • ORCFILE
  • org.apache.hadoop.hive.ql.exec.MoveTask
  • Powershell
  • Problems&Solutions
  • RCFILE
  • return code 1
  • SEQUENCEFILE
  • Service 'userhome'
  • Service 'userhome' check failed: java.io.FileNotFoundException
  • SQL Server
  • sqoop
  • SSIS
  • TEXTFILE
  • Tez
  • transaction manager
  • Views
  • What is Hadoop

Featured Post

TOP 100 SQL SERVER INTERVIEW QUESTIONS

SQL SERVER INTERVIEW QUESTIONS 1.       What is the Complex task that you handled in your project 2.       What are the diffe...

Pages

  • Home
  • SQL SERVER
  • Greenplum
  • Hadoop Tutorials
  • Contact US
  • Disclaimer
  • Privacy Policy

Popular Posts

  • Greenplum Best Practises
    Best Practices: A distribution key should not have more than 2 columns, recommended is 1 column. While modeling a database,...
  • Powershell Script for SSRS Deployment
    Scenarios: Deploy SSRS reports using automation #Set variables with configure values $Environment = "DEV" $rep...

Copyright © TECHTalksPro
Designed by Vasu