Columnstore index in sql server (tutorial)

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In this SQL Server tutorial we will try to understand columnstore indexes.

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1 июл 2024

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Комментарии : 43

@dnfvideo 2 года назад

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@TheOntheskies 5 лет назад

Very good explanation. Thank you!

@ajaysharma2061 5 лет назад

Very much informative and helpful. Thank you for this.

@vikaspandey4128 4 года назад

Really nice article and it helps me in clearing my doubts.

@georgetuccio6053 6 лет назад

Another amazing video. You guys are awesome.

@tushibhaque863 6 лет назад

Thanks fr this great tutorial...was waiting fr a video about columnstore index..

@abraceyiii 6 лет назад

awesome explaination...keep up the good work

@amitthorat6183 2 года назад

Thank you! Highly engaging and informative video.

@sumantabasu4450 3 года назад

Really good overview of the concept. However one question - even for an OLAP scenario, if the requirement is to retrieve all the columns of a table by a select query on basis of an ID field , does column store index on each field really provides any benefit ? or just non clustered index on that id field is sufficient?

@jatindersingh2241 3 года назад

Very well explained , Thanks for sharing

@tejaswil1656 2 года назад

Thank you sooooooooooooooooo much sir.... very clearly explained. This helps a lot💗🤝God bless you

@sridharramalingam329 6 месяцев назад

Very well explained, thanks

@user-ij8cs2jw6y Год назад

Thank you for the excellent explanation.

@theRevelationsurah 3 года назад

I really like the explanation

@pratikfutane8131 5 месяцев назад

Great explanation!

@thearchibaldtuttle 2 года назад

Thank you for this intro!

@alexanderlinders4999 3 года назад

Very helpful video!

@hemanttoday 6 лет назад

Great work

@michauJi 5 лет назад

Great video :) Very benefitial.

@avulasaikumar3081 2 года назад

Thank you very much for this video.

@srinivasavula7268 4 года назад

Nice explanation sir..Column store index will increase the overall table size right...

@krunalshah351 5 лет назад

great. example is very nice.

@dhanarajumattaparthi6399 2 года назад

Nicely explained...

@srinivasavula7268 4 года назад

As a developer of ms sql server in my regular performance tuning I am creating indexes on queries having date columns as filters(ex retrieving the data created between 01-jan-2020 and 31-jan-2020),but sql server not recommended this column while creating the index...please explain...Thank you.

@arunkamble6691 3 года назад

Excellent.

@angelamessina7187 4 года назад

Thank you

@nitikrish77 3 года назад

superb...

@koushikdey100 Год назад

Great 👌👌

@lkchannel1550 3 года назад

Thanks.

@prokhorov_sergey_igorevich 6 лет назад

Cool! Nice boost :)

@amitbhattacharyya5925 2 года назад

Can it support around 600 million rows 90 col table where i would do col index on about 60 col ? Any idea

@baskarlakshmi889 5 лет назад

I have created columnstored index after that am faced error update statement failed because in a table that has a noncluster index. Consider disabling the volume tire index before issuing the update statement and then rebuilding the columstore index..Pls advice

@nikhilreddy8550 2 года назад

If it is a Clustered Index, shouldn't the leaf node contain the actual entire row rather than pointing to the row? That is also the reason we can only have 1Clustered Index.

@mohanpara4535 2 года назад

how compression works ? Will it merge duplicate values in a column as a single value ?

@jack35411 Год назад

Yes,it applies compression on similar values which makes it more performant

@irfankhanmohammed6964 Год назад

Great explanation Sir. I have a question. Is Nonclustered columnstore index is different to nonclustered index? Can you please answer this? I am bit confuse.

@rakeshranjan7647 Год назад

Yes it is , non cluster index store data row wise i e all column in a single page of 8 kb but when you create non clustered columnstore index on any column or group of column then each column is store in a separate 8 kb page

@kirankumarkommalapudi9947 6 лет назад

Column store index will have clusterd and non clusterd again? Syntax above creating non clusterd column store index...

@ryanshannon7703 5 лет назад

A clustered column store index is ALL columns being column store, which probably won't make much sense in most scenarios. Even in a Fact table of an OLAP, I'm not sure how a clustered column store index would be beneficial, other than just not creating a bunch of nonclustered column store indices in terms of coding. Starting in SQL Server 2016, they allow non clustered index on column store (and vice versa), as when you start drilling down to very specific entries into your OLAP data, the non clustered index will be more helpful than the column store, which makes sense (less entries per page, but more relevant towards specific entries required for data return which means less densely packed pages to sift through). That's why for aggregates, column stores are like, way awesome.

@rekhakalyani2903 3 года назад

Why am I not able to see clustered index in execution plan ? I have clustered and non clustered indexed on my table..when I click on execution plan I can't see the index just like your screen