Use Of GROUP BY Clause In SQL | Interview Questions | Examples

In this video we will learn to us GROUP BY Clause in SQL with help of 5 different use cases of Group By Clause along with query practice.
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#sql #GroupByClause #Having #GroupBy #sqlserver #database #mysql #PlacementPreparation

[@amanrathore9775]

answers:
1. select department , max(salary) from employee_info group by department;
2. select gender ,count(id) from employee where dob between 01/01/1960 AND 31/12/1975 group by gender;
3. select department , count(id) from employee_info group by department;
Please check my queries @CodeEra :) Thanks

[@CodeEra2020]

Yeah Its Correct. Thank you for watching

[@sachinupreti7159]

@@CodeEra2020 how 🙄, data must be written in ' ' quotes ....recheck it..

[@phyapanchakpram]

@@sachinupreti7159 date is different data type.Not string not int.

[@shabbiulhassan9677]

2. select gender ,count(id) from employee where dob between 01/01/1960 AND 31/12/1975 group by gender;
Shouldn't we use HAVING clause instead of WHERE here?

[@PenApostol]

@@shabbiulhassan9677having is used for aggregate functions

[@debasreetenyson5386]

Thank you so much for giving the vertical view of table after group by is used. The view made it so easy to understand. In no other video I found this. Thank you so much sister.

[@CodeEra2020]

I am so glad you the video. Thank you so much for watching

[@mejawad6673]

Thanks for your excellent videos based on scenarios. Helps me a lot

[@stereolyrics2386]

Very helpful and you explain in very simple manner . Thank you👍

[@CodeEra2020]

Thank you.

[@pradyumansinghshekhawat7364]

very well structured lecture
Explained thoroughly
❤

[@CodeEra2020]

Thank you so much😊

[@SaumyaSharma007]

God bless you 🙂🙏

[@ptechsolutions9575]

Very helpful

[@entertaintvshorts]

Null value it is display y as its sum is less than 17 k in the vedio at 10.20

[@CodeEra2020]

Null is in Department column not in SUM(Salary) Column

[@nakulanand2725]

Very well explained Mam thanks.

[@CodeEra2020]

Thank you so much.

[@hdmovies9432]

Thank you it really helps

[@CodeEra2020]

So glad to know that It helps you.. Thank you for watching

[@vineelsai111]

select
department,max(salary) from employee_info group by department;
select
count(*),gender from employees group by gender having dob between
'1960-01-10' and '1975-12-31';
select count(*),department
from employees group by department;

[@gollangianand6378]

TQQ madam very useful &easy to understand

[@prathapganesh7021]

Thank you for the video

[@potnurinagamohan3556]

Great work..Pls take full SQL course from beginners.. it is very useful to them to crack the interview

[@hindushasaragadam6865]

Thank you, nice explanatiom

[@MRBLACK-id7zk]

Great

[@CodeEra2020]

Thank you so much

[@adeshtiwari5152]

Is it always necessary to include those columns in "group by" which are used after Select?
For ex: Select col1, col2 from table group by col1.
In this above query do we also need to include col2 in group by as it is there after Select.
Could you please confirm this point.

[@davidlewisn1017]

Hello,
Hello,Great work you are doing in computer training.
I am generating reports and i have challenges in using using sum and group by in my sql querries.
Could you kindly offer some help i am stuck on these .
Your help is much appreciated.
David

[@CodeEra2020]

What difficulty are you facing?

[@kumbharsangita6391]

Thank you so much...

[@CodeEra2020]

Welcome. We're so happy that you like the video. Thanks for watching

[@radhasakhi4546]

Nice video Didi

[@CodeEra2020]

Thanks for liking

[@kiranharijan2809]

Madam for practice purspose can you plz provide more questions on sql

[@CodeEra2020]

Sure,we will.

[@tapantiwari2026]

why in the output result at 11.25, NULL is not displayed although it has sum(salary) as 87000 which is greater than 17000

[@jeneeta_aslam]

Same doubt :(

[@subbarayudu118]

Thank you madam

[@sourabhgaming1431]

Nice

[@CodeEra2020]

Thank you so much

[@explorenewsee2815]

Nice 👍

[@AnilKumar-cl4hp]

I am your New subscriber

[@adityashekharsingh2669]

helpful!!

[@AnjaliMathur-dr5ui]

1) select max(Salary), department
from employee_info
group by department;
2) select count(ID), gender from employee_info
where DOB between 01/01/1960 and 31/12/1975
group by gender;
3)select count(ID) , department from employee_info
group by department;

[@sujin8380]

Why using aggrigate function in group by

[@bharatkumarboddepalli6095]

there is a small mistake in data set .....department constraint cant be "NOT NULL" while creating table .