You are the best instructor in the field of programming based on my experience, I wish I had a professor like you when I studied CE at University. I can not help but admire your natural talent to simplify complex concepts.
Might be worth noting that the delay in querying the database could lead to adverse results if there are table changes between creating the interface and applying the filter. Good video though
Hello Sir, I have one question. We have 2 options to get data from DB using EF ie. List data = _context.tableName.AsQueryable().Where(x => x.id == 33144).ToList(); and List data = _context.TableName.Where(x => x.id == 33144).ToList();. Both have same impact when we see in SQL profiler then why to use IQueryable?
Another use case would be to add filters on run time, for example in your query if there is one more parameter lets say as name, so if name filter needs to be applied based on condition, then also you can use IQuerayable
Hi Shiv, Your videos are very good to understand the concepts. In one of the interviews, along with this difference I was asked which one is having thread safety feature or thread safe. I couldn't answer it properly. I tried to search on net but didn't get proper answer. Can you help me to get this answer so it will help me to clear that concept. Thanks
Very Nicely Explained it sir, But I have one small query regarding IQueryable, may be it is silly question (don't mind)..!! If I am declaring IQueryable variable and initializing (getting data from DB) Apply where conditions and filter the data, and in next line I am getting a count() of that variable then there will be 2 DB call (1st for getting data with filtered and 2nd for getting count(*)) or only 1st DB call..?? Ex: IQueryable results = db.GetTable().Where(Expression); var recordList = results.ToList(); int totalRecords = results.Count(); Please help..! Thank you in advance..!!
Great video as always. Of course an example of in memory would have been nice too. If we have an in memory list and we use iqueryable instead of ienumerable, do we get any drawbacks?
In my junior dev job, they were using different places interechangeably these two collection types: IEnumerable & IQueryable. And I was very confused with the requirement of doing such implementation. You have clarified my doubts and questions. And it makes a big difference of using the two different types of collections when we are mutating the various different objects. Thank you so much for taking the effort and time to deliver such essential information.
Great video with the answer on the question! I failed an interview the other day due to some failed answer attempts, one of which was about the difference between IEnumerable and IQueryable...
Excellent video. Very simply explanation of the differences between IQueryable and IEnumerable with EF. Quick question though... if you applied a ToList() on the end of where you called dal.Employees so it was dal.Employees.ToList(), would all calls now be in memory? So would you only have gone to the DB once to load the Employees table and then all filters are just applied to the in memory list? Thank you.
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Straight to the point, you answered the question and visually showed the effects of using IQueryable using the profiler. Very well done!
You are the best instructor in the field of programming based on my experience, I wish I had a professor like you when I studied CE at University. I can not help but admire your natural talent to simplify complex concepts.
awesome bro.. can't say thank you enough to all youtube teachers .. Happy 2019
Might be worth noting that the delay in querying the database could lead to adverse results if there are table changes between creating the interface and applying the filter. Good video though
if there are table changes, and if IQueryable doesn't work, most likely even IEnumerable won't work.
Perfect! Great video! Very useful for deciding to use both interfaces. Thank you!
Excellent explanation within a very short time.
Thank You Sir It helps a lot 😍.. Good information
❤ 😮 wow thats awesome! This can be a huge performance hindrance
Hello Sir, I have one question. We have 2 options to get data from DB using EF ie. List data = _context.tableName.AsQueryable().Where(x => x.id == 33144).ToList(); and List data = _context.TableName.Where(x => x.id == 33144).ToList();. Both have same impact when we see in SQL profiler then why to use IQueryable?
Another use case would be to add filters on run time, for example in your query if there is one more parameter lets say as name, so if name filter needs to be applied based on condition, then also you can use IQuerayable
good example, suggestion work more on speech it will become great
Can i get referral for .net developer fresher opening!??
Hi Shiv,
Your videos are very good to understand the concepts.
In one of the interviews, along with this difference I was asked which one is having thread safety feature or thread safe.
I couldn't answer it properly. I tried to search on net but didn't get proper answer. Can you help me to get this answer so it will help me to clear that concept.
Thanks
Very Nicely Explained it sir,
But I have one small query regarding IQueryable, may be it is silly question (don't mind)..!!
If I am declaring IQueryable variable and initializing (getting data from DB) Apply where conditions and filter the data, and in next line I am getting a count() of that variable then there will be 2 DB call (1st for getting data with filtered and 2nd for getting count(*)) or only 1st DB call..??
Ex:
IQueryable results = db.GetTable().Where(Expression);
var recordList = results.ToList();
int totalRecords = results.Count();
Please help..!
Thank you in advance..!!
Thank you. This 7-minute video indirectly answered a question I've been trying to find an answer to for a while. Subscribed. 🎉
Awesome sir. You are great. Nicely explained the topic and very easy to understand the difference. Please keep your awesome teaching.
Thanks
Great video, i was always confused to these concept. but today i am fully clear on this concept.
Great video as always. Of course an example of in memory would have been nice too. If we have an in memory list and we use iqueryable instead of ienumerable, do we get any drawbacks?
Awesome... what an explanation.. Thank-you sir
Your amazing thank you.
In my junior dev job, they were using different places interechangeably these two collection types: IEnumerable & IQueryable. And I was very confused with the requirement of doing such implementation. You have clarified my doubts and questions. And it makes a big difference of using the two different types of collections when we are mutating the various different objects. Thank you so much for taking the effort and time to deliver such essential information.
This channel is one of the most underrated channels in youtube.
Super great explanation! Clearly understandable! Thanks!!! Keep up your good teaching
Thank you so much for this explanation! God bless
Great video with the answer on the question! I failed an interview the other day due to some failed answer attempts, one of which was about the difference between IEnumerable and IQueryable...
If I remember IEnumerable uses expression tree and IQueriable uses tree traversial.
Sir you are great. Very useful video. Thanks a lot!!
Thanks
Best video
Excellent video. Very simply explanation of the differences between IQueryable and IEnumerable with EF.
Quick question though... if you applied a ToList() on the end of where you called dal.Employees so it was dal.Employees.ToList(), would all calls now be in memory? So would you only have gone to the DB once to load the Employees table and then all filters are just applied to the in memory list? Thank you.
Good video ! Simple and concrete answer.
Awesome way of showing the difference. That's what I like in your content
Nice
Understand sir
I've been looking for this kind of video for a couple of hours already. great job!
Thanks bro! keep uploading useful information like this!
sorry, bro, but it is very high level description
tnx, man! It was really good video and good explaining different between IEnumerable and IQueryable!!! Like!
Great One... Superb Exlpaination.
thanks a lot
Excellent
Nicely explained. Thank you 😊
Thanks
Perfect
Very nice explanation bro, thank you
Thanks for making clear understanding, Please make video on visual studio 2019 tools, its features, tips & hidden tricks etc.
Great explanation. Thanks!
Nice video. To the point. No BS
In simple words, using Iqueryable will defer query execution..
yes sir , but until we do not see it , simple words are not simple :-) happy learning.
It's really very helpful for me...
Nice. well explained !. can't we filter while loading Employee table or using linq ?
I have interview tomorrow..hope this one helps
Just prepare this video you should be able to answer 15% of the interview questions ua-cam.com/video/BKynEBPqiIM/v-deo.html
Thank you sir..
Very excellent explanation...
very clear explained, nailed it
Thank you so much for this !
Good show and crystal clear
Well explained, thanks
Very nice explanation, Great man!, thank you so much!
Great explanation sir. Thank you so much.
Thank you for your great explanation.
Short and sweet yet taught ME the difference! Thank you!!!
Explanation was awesome
VERY useful video.
Great explanation sir.
At the starting of the video you have shown us the playlist where we'll get those videos??
visit www.questpond.com
I really see awesome practical example. thanks a lot sir.
Great explanation 👍
Thank you very much
Its good for me
great sir
Really cleared explanation in simple words.
Excellent tutorial. Thanks a lot.
I like the way you explain these topics in all your videos.
thanks for this vid
Thank you so much
Thanks for good explanation!
nice and informative. Thanks
You are awesome 😎
Worth to watch
Very clear explanation. Thank you.
Thank you!
Brilliant 👍
This video was awesome, straight to the point!
Sir please make interface video
Please 🙏
Our video on Abstract class & Interfaces you can watch below :-
ua-cam.com/video/0EnSPBVrbG0/v-deo.html
what a nice tutorial sir ji,great
Many thanks
awesome sir
nice video, great information
Unique Explaining
Brilliant. Thanks a lot.
Great.......
Super sir
Nice
Many thanks man.
Great explanation and information, thank you!
This is neat.
Good stuff.
Thanks a lot ,This is the best advice in my day.
Good explaination
Hi sir, but I thought interfaces are abstract and don't contain any logic then how are the differences highlighted in the video work.
Interfaces are pointing to a list or some concrete collection
Thank you. Can you point out a resource where I can get this type of info?