regarding Data into the table

[Former Member]

Hi frnds,

I have a ztable having 5 fields and i m updating data into these fields from a file in the application server , but i have a requirement where i have added one more key field (Seq no)

in the table but i dont have data for that field in the File present in the application server.

so i have been given a logic to update data into that field as like :While inserting generate a running number for inserting into SEQNO field . This is to ensure unique records in the table. Whenever a table insert is first initiated max( seqno) from ZACT should be picked and the new number will be max number + 1 , for next set of data it will be last number + 1.

Can anyone help me regarding this.

regards,

sanjay

Edited by: sanjay jaju on Feb 18, 2008 7:04 PM

[Former Member]

Hi Sanjay,

Although I am not completely convinced you are using the concept of sequence number correctly, I will try and answer your requirement here:

To get the latest Sequence Number in the Z table (called say ZTAB) do as follows:

SELECT seqnr FROM ZTAB INTO v_max_seqnr
ORDER BY seqnr DESCENDING.
ENDSELECT.
v_max_seqnr = v_max_seqnr + 1.

Then the file that you have uploaded into an internal table compatible with ZTAB for the update, just modify it to update the Sequence number field (in internal table) with v_max_seqnr as below

wa-seqnr = v_max_seqnr.
MODIFY itab FROM wa 
TRANSPORTING seqnr
WHERE seqnr IS INITIAL.

Finally

MODIFY ztab FROM TABLE itab.

-

---

Normally how I believe the sequence number should be used is, say currently your Z table has two primary key fields. Now the sequence number should be started from 1 for each new combination of the existing primary key combination and incremented every time this combination repeats.

Cheers,

Aditya

[vinod_vemuru2]

Hi,

Do like this.

DATA: w_count TYPE zact-seqno.

SELECT MAX( seqno ) INTO w_count FROM zact.

w_count has the max value of seqno in ur Ztable.

U can increment this by 1 and insert in new records. Hope this will solve ur problem.

Thanks,

Vinod.