Re: Need help in database design

How do you uniquely reference each set of 50 k/v pairs?

On Mon, Dec 23, 2024 at 12:01 PM Divyansh Gupta JNsThMAudy <
ag1567827(at)gmail(dot)com> wrote:

> Sure , for example, I have 50 key with name as t1 , t2 ,t3 .......t50
>
> Now each key could have values from 0 to 3
>
> So let suppose we have JSONB like that for row r1
>
> {
>
> t1: 1
>
> t2: 2
>
> t3 : 3
>
> }
>
>
> As if I convert it into columns so r1 will have
>
> t1 column will contain 1
>
> t2 column will contain 2
>
> ...... So on
>
>
> So here my question is considering one JSONB column is perfect or
> considering 50 columns will be more optimised.
>
>
>
> On Mon, 23 Dec 2024, 10:24 pm Adrian Klaver, <adrian(dot)klaver(at)aklaver(dot)com>
> wrote:
>
>> On 12/23/24 08:46, Divyansh Gupta JNsThMAudy wrote:
>> > Also as you ask how 50 pairs turns into 50 column so each column will
>> be
>> > a key and the value of that key will store inside their respective
>> > column for each row
>>
>> My problem with understanding this is 50 pairs = 100 values, I don't
>> understand how that can fit in 50 columns that can only handle 1 value
>> each. You need to provide some example data showing what you want to
>> achieve. It does not need to be the full 50, just something to show the
>> process.
>>
>>
>> >
>> >
>> > On Mon, 23 Dec 2024, 10:14 pm Divyansh Gupta JNsThMAudy,
>> > <ag1567827(at)gmail(dot)com <mailto:ag1567827(at)gmail(dot)com>> wrote:
>> >
>> > As per the discussion with other team members they suggested if we
>> > store 50 values for keys in an individual column that will provide
>> > better performance as the data type is native (INT2) on the other
>> > hand if we store all the key value pair in a single JSONB column the
>> > performance will degrade even after applying a GIN index on that
>> > however the statement sounds funny but I want to take everyone
>> openion?
>> >
>> >
>> > On Mon, 23 Dec 2024, 10:05 pm Adrian Klaver,
>> > <adrian(dot)klaver(at)aklaver(dot)com <mailto:adrian(dot)klaver(at)aklaver(dot)com>>
>> wrote:
>> >
>> > On 12/23/24 07:53, Divyansh Gupta JNsThMAudy wrote:
>> > > Hii Community,
>> > >
>> > > I need to provide a support for some functionality for my
>> > application
>> > > for that I need to store 50 key value pair set, so I am in a
>> > dilemma,
>> > > weather I create 50 new columns of int2 data type each column
>> > will
>> >
>> > This is unclear, I am trying to figure out you go from '50 key
>> > value
>> > pair set' to '50 new columns of int2'.
>> >
>> > In other words how 50 pairs turn into 50 columns?
>> >
>> > Then there is the question of why 50 keys per row in the first
>> > place?
>> >
>> >
>> > > contain value of a specific key or should I go with JSONB
>> > data type with
>> > > 50 key value pair, the table on which I am going to do that
>> > all contains
>> > > 1 Billion rows of data and have 84 hash partitions, I have
>> > gone through
>> > > multiple articles some of them mentioned it's a good approach
>> > to create
>> > > 50 new columns and some states that creating one JSONB would
>> > be best
>> > > that's why I need your help to move forward, also I am ready
>> > to make
>> > > H-Store instead of JSONB if it provides better performance.
>> > > Please help me to comes out from that dilemma.
>> > >
>> > > Regards,
>> > > Divyansh Gupta,
>> > > Database Administrator
>> >
>> > --
>> > Adrian Klaver
>> > adrian(dot)klaver(at)aklaver(dot)com <mailto:adrian(dot)klaver(at)aklaver(dot)com>
>> >
>>
>> --
>> Adrian Klaver
>> adrian(dot)klaver(at)aklaver(dot)com
>>
>>

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