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How to find duplicate records in a table in SQL server

Introduction: In this article today I am going to explain how to find duplicate records in a table in SQL server

Description:

I have a table Student_Detail and having duplicate records.
  
find duplicate records in a table in SQL server


We can find the duplicate records of table using Group by clause. To find the duplicate records of table use the below given Query:

Select SudentName,Fee,StudentClass,StudentRollNo, count(*) as Duplicate from dbo.Student_Detail group by SudentName,Fee,StudentClass,StudentRollNo having count(*) >1


find duplicate records in a table in SQL server


We can also use the beloe given query to find the duplicate records:

Select SudentName,Fee,StudentClass,StudentRollNo from dbo.Student_Detail group by SudentName,Fee,StudentClass,StudentRollNo having (count(SudentName) >1)

find duplicate records in a table in SQL server

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