How to get last inserted RowID when %Save() function is used?

Question

Question

Vivek Nayak · Aug 27, 2019

#InterSystems IRIS

I need RowId of inserted record.

I have used below logic to get max row id,

but it will not give desired result when multiple people enter record in the table at the same time.

Discussion (7)1

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Evgeny Shvarov · Aug 27, 2019

Hi Vivek!

Instead of &sql ...

you can do:

write objExternalUser.%Id()

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score 0 · Answer 1 · 2019-08-27T10:09:40-04:00

Michel Bruyère · Aug 27, 2019

What purpose for the max RowId ?

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score 0 · Answer 2 · 2019-08-27T10:45:39-04:00

So, If I am using objExternalUser.%Id() then which Id I ll get

1) Id of record inserted by my objExternalUser.%Save() function?

2) Id of latest inserted record?

score 0 · Answer 3 · 2019-08-27T10:50:00-04:00

Sorry Vivek. My code provides you the Id of objExternalUser you save (possible create) above. It's 1).

It's not the latest inserted record. I thought you need:

I need RowId of inserted record.

Out of curiosity: why do you need the latest record?

score 0 · Answer 4 · 2019-08-28T03:50:34-04:00

Thanks Evgency,

I got my answer, actually I need the Id of record inserted by my objExternalUser.%Save() function and that I got by your answer( objExternalUser.%Id() )

score 0 · Answer 5 · 2019-08-28T03:51:53-04:00

Evgeny Shvarov · Aug 28, 2019

Great! Happy to hear that

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score 2 · Answer 6 · 2019-08-28T02:01:28-04:00

When you create a class that the IDs are maintained by the system (standard class without modifying the storage, then there is a save mechanism to give a new ID to every new object that is being saved to the database.

Of course that when multiple users are saving new data simultaneously , a specific process ID after a %Save() might not be the last one in the table.