Re: Need help in database design

Each row have a PK (gdid) that will uniquely refrence 50 k/v pair set

On Mon, 23 Dec 2024, 10:35 pm Ron Johnson, <ronljohnsonjr(at)gmail(dot)com> wrote:

> 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
>>>
>>>
>
> --
> Death to <Redacted>, and butter sauce.
> Don't boil me, I'm still alive.
> <Redacted> lobster!
>