Hi, When you say PK is not working, is there any error surfaced?

Please tag @Debayan​ with your next comment so that I will get notified. Thank you!

@Debayan Mukherjee​ Im able to insert the same record where we have Primary key setup on the table.

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ALTER TABLE ccietlfindev.finsilver.companyperiods ALTER COLUMN iCompanyId SET NOT NULL;

ALTER TABLE ccietlfindev.finsilver.companyperiods ALTER COLUMN iPeriodId SET NOT NULL

ALTER TABLE ccietlfindev.finsilver.companyperiods ADD CONSTRAINT companyperiods_pk PRIMARY KEY(iCompanyId,iPeriodId);

select iCompanyId,iPeriodId, count(1) from ccietlfindev.finsilver.companyperiods

group by iCompanyId,iPeriodId

having count(1) > 1

insert into table ccietlfindev.finsilver.companyperiods

values ('1','182','1996-08-31 23:59:59.998','Aug 1998','1996-08-31 00:00:00.000','C','2023-05-11 15:01:43.707')

Select * from ccietlfindev.finsilver.companyperiods

where iCompanyId = '1' and iPeriodId='182'

delete from ccietlfindev.finsilver.companyperiods

where  iCompanyId = '1' and iPeriodId='182' and PeriodDesc='Aug 1997'

Select * from companyperiods

In the case when I run count after the second record insert, I see 2 records instead of just one and should have failed saying "you are trying to insert duplicate records where there is a primary key setup"

@Debayan Mukherjee​ 

@Debayan Mukherjee​ Any info on the above plz ??