SQL Interview - Employee Manager Hierarchy - Self Join #sqlinterviewquestions

This video is part of the series on scenario based SQL Query Interview Questions.

This video discusses how to fetch employee manager details by implementing self joins on the same table.

For all levels of Employee Manager Hierarchy using recursion, please see the below video

For complete list of SQL Query Interview questions, please watch the below playlist

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Have you been asked a SQL query interview question that you couldn't answer?

Let us know in the comments below and we will answer those in our upcoming videos!

[gagansingh]

Thank you mam for making such an amazing videos on sql, I have practice most of your videos of playlist 62 videos Keep posting amazing videos

[kristyowens]

very useful. I have been asked this question many times in interviews.

[surajpatil]

Thank you... your content is truly informative

[narayanagottipati]

Great video. Please upload this type of queries mam...Thanks

[AK-rwzq]

The Boss who's value is Null record not appeared in the output, please check once...

[saradacosta]

How will you query to identify the circular references in employees and manager relationship?

[AbdullahAli-yqwm]

If you share SQL query in the description would be so helpful

[PujaKiPyaariDuniya]

Please make video for full hierarchy like parents, son,
Grand parents, grand children

[radhikasinhanwd]

can you help me solving a sql query for a database that contains three tables, AAID, cookies, IDAF
Column Headers
● Id_type
○ AAID
○ IDFA
○ Cookie
● Device_id
● Hashed_email (SHA256)
● Timestamp
○ Unix timestamp
● Ip_address
● Opted_out
○ 1, 0
○ 1 = opted out

Querys are
● Where device_id appears more than once AND has ID type IDFA & AAID - Delete all
● IF hashed email matches more than 50 IDs (sum of cookie, idfa, aaid) - Delete all
can this be deleted in single query?

[lakshaysharma]

Thanks for the informative video. Also, can you help with the insert code for the data?

[nikhilkumarchaudhary]

kindly share how to print this hierarchy in single column like --> adam->natasha->mark in single column

[koteswaribapatla]

please include source script in description, thanks

[suryakanthbhullha]

Thanks, if you added table populated script that will very helpful.

[harshamuniswamy]

What is the difference between union and Superlative Union?

[KishoreKumarKokkula]

You did for one level only, you can't get full & complete hierarchy with just one self join, if you can make it plz share

[priyankadevarapalli]

why is it not mentioned as self join in self join and mentioned as inner join?

[saileelavamsikrishna]

I was asked to find all direct and indirect subordinates with given manager name🤦🏻‍♂️

[cleversachin]

This is not hirearchy. hirearchy means a particular employee's entire hirearchy