Get manager name in employee table mostly asked in interview question

05 October 2016 Sudhanshu Ranjan 1.41k

Mostly this question asked by interviewer to find the manager name of employee in employee table.


NULLIF Function in SQL Server with example

05 October 2016 Sudhanshu Ranjan 1.84k

Most of the Interviewer ask this question. What is NULLIF Function? The NULLIF function compares expression1 and expression2. If expression1 and expression2 are equal, the NULLIF function returns NULL. Otherwise, it returns the first expression which is expression1.


How to delete the duplicate record from table in sql server

08 July 2016 Sudhanshu Ranjan 1.52k

This is common query asked in most of the interviews.


Display data which has two or more than two times in table in sql server.

08 July 2016 Sudhanshu Ranjan 1.47k

This is most popular query which is asked by interviewers.


What is the difference between UNION and UNION ALL?

20 May 2016 Sudhanshu Ranjan 1.33k

UNION and UNION ALL both are merged the data of two different tables in single table. UNION display only the unique data in both table whereas UNION ALL display duplicate data also. Column name should be match on both table...More


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