Re: Duplicate data even with primary keys enabled

Hello Teja,

Could you please add some example lines? I need to see some examples to say
something more accurate.

First of all, null != null in PostgreSQL. So, if any of those three columns
is null, it means it is unique and won't violate unique constraints even if
there is another row with the same values.

Another thing, if you defined a composite primary key on those 3 columns,
it means that it will prevent inserting another row that has exactly the
same values on those columns. If you want to keep values unique on each
individual columns, you need to create 3 separate unique
indexes/constraints.

Best regards.
Samed YILDIRIM

On Fri, 28 Oct 2022, 19:52 Teja Jakkidi, <teja(dot)jakkidi05(at)gmail(dot)com> wrote:

> Hello Admin team,
>
> I have an issue where we are seeing duplicate data in one of the tables.
> The table has primary key constraint defined on 3columns and we are seeing
> duplicate data in these column data.
> Is there any way to figure out why this could happen? Also is there a way
> that the primary key constraint can be disabled during inserts?? If so how
> can we find who disabled it? (Note that audit is not enabled for the table)
> Please suggest.
>
> Thanks,
> Teja.
>
>