Re: Query tool data grid - Infinite scroll vs Pagination

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From: Akshay Joshi <[email protected]>
To: Aditya Toshniwal <[email protected]>
Cc: pgadmin-hackers <[email protected]>
Subject: Re: Query tool data grid - Infinite scroll vs Pagination
Date: Thu, 8 Aug 2024 18:22:49 +0530
Message-ID: <CANxoLDexeQwhsOrsV83WjwmU8znr+yQrLYriFgqRTVygJbWrPw@mail.gmail.com> (raw)
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On Thu, Aug 8, 2024 at 6:17 PM Aditya Toshniwal <
[email protected]> wrote:

> Hello Everyone,
>
> Just want to share the progress on this. Attached is a quick demo. It is
> not complete yet, but I just want to make sure I'm in the right direction.
>
> https://drive.google.com/file/d/1B7DuD2Wx2SABGPEEjc8o4RwYcNgu1t_s/view?usp=sharing
>
>     Excellent, I like the new design.


> On Sat, Aug 3, 2024 at 7:39 PM Gus Spier <[email protected]> wrote:
>
>> I like the idea of gmail behavior.
>>
>> Regards,
>>
>> Gus Spier
>>
>> On Sat, Aug 3, 2024 at 5:45 AM Edson Richter <[email protected]>
>> wrote:
>>
>>> Love it!
>>> I believe the Gmail behavior is a good approach.
>>>
>>> Regards,
>>>
>>> ER
>>>
>>>
>>> Obter o Outlook para Android <https://aka.ms/AAb9ysg;
>>> ------------------------------
>>> *From:* Aditya Toshniwal <[email protected]>
>>> *Sent:* Friday, August 2, 2024 3:53:33 AM
>>> *To:* pgadmin-hackers <[email protected]>
>>> *Cc:* Usman Khan <[email protected]>; pgAdmin Support <
>>> [email protected]>; Dave Page <[email protected]>; Dave
>>> Caughey <[email protected]>
>>> *Subject:* Re: Query tool data grid - Infinite scroll vs Pagination
>>>
>>>
>>> Hi Hackers,
>>>
>>>
>>> I have come up with the following design, which allows:
>>>
>>> 1. Adjust the range of rows visible, aka Window.
>>>
>>> 2. Jump to a page number directly based on rows window size.
>>>
>>> 3. Pagination buttons to move forward and backward.
>>>
>>>
>>> My question is, how should "select all" behave now? Previously we used
>>> to fetch all the rows when select all was clicked which actually slowed
>>> down as it took time for large data.
>>>
>>> Maybe add a new button to virtually "Select All Rows".
>>>
>>>
>>> [image: image (15).png]
>>>
>>>
>>>
>>> On Tue, Jul 2, 2024 at 6:16 PM Aditya Toshniwal <
>>> [email protected]> wrote:
>>>
>>> Thank you Dave and others for your valuable feedback.
>>> We'll try to achieve what is best for the users.
>>>
>>> On Tue, Jul 2, 2024 at 5:46 PM Dave Caughey <[email protected]> wrote:
>>>
>>> I think there's a nice blend between pagination and infinite scrolling.
>>>
>>> The problem with the *current *infinite scrolling implementation is
>>> that the scroll baris scaled to the number of *rendered* rows, so as you
>>> scroll down (which renders another bunch of records), it keeps
>>> rescaling the scrollbar, so to get the next "page", you have to continually
>>> move to the scrollbar (as Aditya says, "*Many users who want access in
>>> between rows or last row struggle to do it as the user has to scroll and
>>> scroll.*")
>>>
>>> If instead the scrollbar were scaled to the total number of rows, (e.g.,
>>> 1000 rather than the initial 25 rows that were rendered), then clicking
>>> (say) in the lower third of the scrollbar would would do enough
>>> fetching/rendering to display rows 601-625 (or such).  Problem solved.
>>>
>>> Alternatively (or additionally), provide a "jump to row..." button
>>> (similar to what Usman is suggesting re pagination) that gives the user
>>> control to see a specific bunch of records quickly.
>>>
>>> But if the issue is that people don't like infinite scrolling because
>>> "the user has to scroll and scroll", then fix that specific UE issue, and
>>> people will be happy.
>>>
>>> The concern I have with a paginated solution is if the page represents
>>> the maximum number of rows rendered in the results pane, at any one time.
>>> Assume I can see 25 rows in the result pane.  I.e., you show rows 1-25 for
>>> the first page, then you *only *show rows 26-50 for the second page,
>>> then *only *show rows 27-50, etc. But when there is a cluster of
>>> records of interest between rows 640 and 655, then those records of
>>> interest are going to be spread between pages 25 and 26, and will
>>> constantly require flipping back and forth between pages.  This would be
>>> possibly worse UE than the current "user has to scroll and scroll" issue.
>>> On the other hand, if your pagination solution includes letting someone
>>> nudge the rendered rows up or down a bit so that I can see rows 640-655 all
>>> at once (e.g., there's a field where I can type in that the current page
>>> should start at row 635, so I can see rows 640-655 all together), then I'm
>>> fine with that.
>>>
>>> However, if ultimately you decide to toss out infinite scrolling for
>>> pagination, then please make the (default?) page size be the number of rows
>>> you can actually see in the result pane, rather than some arbitrary number
>>> (e.g., 50).  Having the page size equal to the number of rendered rows
>>> means I can quickly step through the pages and hopefully notice a record of
>>> interest.... If the page size is larger than the number of rendered rows,
>>> then as I step to the next page I *still *have to scroll down to see
>>> the last few rows, then step to the next page, then scroll down again,
>>> I.e., that would be hideous UE!
>>>
>>> So my vote preferences are:
>>>
>>> First choice: keep infinite scrolling, but simply fix the scrollbar
>>> scaling and/or give the user the means to quickly jump down by a page or to
>>> a specific page
>>> Second choice: use pagination, but *only *if there's the ability to see
>>> a specific chunk of records on a single page (rather than spread across
>>> two), and make the pagination size default to the number of records visible
>>> given the height of the result pane
>>>
>>> Cheers,
>>> Dave
>>>
>>>
>>> On Mon, 1 Jul 2024 at 04:35, Usman Khan <[email protected]> wrote:
>>>
>>> Hi Aditya
>>> I vote for pagination, it would really be helpful for end users.
>>> In addition to giving the user the ability to set page size, if he can
>>> also select or enter what page he can jump to say 501, 990 etc it would be
>>> helpful.
>>>
>>> On Fri, Jun 28, 2024 at 3:44 PM Aditya Toshniwal <
>>> [email protected]> wrote:
>>>
>>> Hi,
>>>
>>> Unfortunately, there were only 3 responses to this.
>>> In that case, we will discuss internally and decide what to do.
>>>
>>> On Thu, Jun 20, 2024 at 2:46 PM Aditya Toshniwal <
>>> [email protected]> wrote:
>>>
>>> Hi Everyone,
>>>
>>> Request you to share your opinion on this and respond on:
>>>
>>> https://docs.google.com/forms/d/e/1FAIpQLSdfJhNK8qXSe9mKcubZa8jjjYl0hiZVxhv6GGJo8WJcYc27ug/viewform?...
>>>
>>> On Thu, Jun 20, 2024 at 1:36 PM Dave Page <[email protected]> wrote:
>>>
>>> Hi
>>>
>>> On Wed, 19 Jun 2024 at 13:42, Aditya Toshniwal <
>>> [email protected]> wrote:
>>>
>>> Hi Hackers,
>>>
>>> Query tool data grid currently pulls the data on load basis in batches.
>>> For example, it will initially load only 1000 rows and once a user scrolls
>>> to the 1000th row, it will fetch the next batch of 1000.
>>> Many users who want access in between rows or last row struggle to do it
>>> as the user has to scroll and scroll. If someone grabs the scroller and
>>> pulls it down still it will be a good UX and the scrollbar may jump. One
>>> reported here - https://github.com/pgadmin-org/pgadmin4/issues/1780
>>> One more aspect to this is the in memory data of the query tool which
>>> keep on increasing on each scroll, it affects the performance.
>>>
>>> I propose we should use pagination instead of infinite scroll with the
>>> following advantages:
>>> 1. Users can jump to any page they want.
>>> 2. Users can change the page size on the grid directly.
>>> 3. Memory will be used only for visible rows so performance improvement.
>>> 4. Predictable UI, no jumping scrollbars.
>>>
>>> Let me know what you think.
>>>
>>>
>>>
>>> I think there are definite benefits, but there is the downside of having
>>> to scroll and click to browse results. Personally I'm fine with that, but I
>>> think you should probably poll pgadmin-support for opinions from more users.
>>>
>>> --
>>> Dave Page
>>> pgAdmin: https://www.pgadmin.org
>>> PostgreSQL: https://www.postgresql.org
>>> EDB: https://www.enterprisedb.com
>>>
>>>
>>>
>>> --
>>> Thanks,
>>> Aditya Toshniwal
>>> pgAdmin Hacker | Sr. Software Architect | *enterprisedb.com*
>>> <https://www.enterprisedb.com/;
>>> "Don't Complain about Heat, Plant a TREE"
>>>
>>>
>>>
>>> --
>>> Thanks,
>>> Aditya Toshniwal
>>> pgAdmin Hacker | Sr. Software Architect | *enterprisedb.com*
>>> <https://www.enterprisedb.com/;
>>> "Don't Complain about Heat, Plant a TREE"
>>>
>>>
>>>
>>> --
>>> Thanks,
>>> Aditya Toshniwal
>>> pgAdmin Hacker | Sr. Software Architect | *enterprisedb.com*
>>> <https://www.enterprisedb.com/;
>>> "Don't Complain about Heat, Plant a TREE"
>>>
>>>
>>>
>>> --
>>> Thanks,
>>> Aditya Toshniwal
>>> pgAdmin Hacker | Sr. Software Architect | *enterprisedb.com*
>>> <https://www.enterprisedb.com/;
>>> "Don't Complain about Heat, Plant a TREE"
>>>
>>
>
> --
> Thanks,
> Aditya Toshniwal
> pgAdmin Hacker | Sr. Software Architect | *enterprisedb.com*
> <https://www.enterprisedb.com/;
> "Don't Complain about Heat, Plant a TREE"
>


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