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raak
Active User
Joined: 23 May 2006
Posts: 166
Location: chennai
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Hi,
Is it possible to use IDCAMS to read only the last 10 records of a VSAM file. If so, how ? |
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William Thompson
Global Moderator
Joined: 18 Nov 2006
Posts: 3156
Location: Tucson AZ
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| As far as I know, it is posible, but only if you can identify which record is the 10th from the end..... |
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raak
Active User
Joined: 23 May 2006
Posts: 166
Location: chennai
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| can u tel me how to do that, in case i know which is the 10th from the last?? |
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William Thompson
Global Moderator
Joined: 18 Nov 2006
Posts: 3156
Location: Tucson AZ
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| REPRO has FROMKEY, FROMADDRESS, FROMNUMBER, SKIP and TOKEY, TOADDRESS, TONUMBER, COUNT. These allow you to start and stop pretty much anywhere you want. |
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mmwife
Super Moderator
Joined: 30 May 2003
Posts: 1592
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Hi Raak,
If you have access to FileAid you can use this:
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| Code: |
***********************************************************************
To get highest 10 recs in a VSAM file
***********************************************************************
//COPYKEY EXEC PGM=FILEAID
//DD01 DD DSN=YOUR.VSAM.FILE
//DD01O DD DSN=file.contains.high.key
//SYSIN DD *
$$DD01 COPYBACK OUT=10
/*
//*
//NEXT EXEC PGM=....
//HIGHKEY DD DSN=file.contains.high.key
//etc....
***********************************************************************
To get 3rd highest key in a VSAM file
***********************************************************************
//COPYREC EXEC PGM=FILEAID
//DD01 DD DSN=input.dsn,DISP=SHR
//DD01O DD DSN=output.dsn,DISP=SHR
//SYSIN DD *
$$DD01 COPYBACK SELECT=3,OUT=1
//SYSPRINT DD SYSOUT=A |
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