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Could you please help me writing a cobol/db2 program

 
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rlnraju1979

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Joined: 23 Feb 2007
Posts: 7
Location: USA

PostPosted: Tue Jun 17, 2008 1:23 am    Post subject: Could you please help me writing a cobol/db2 program
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There are two tables A, B and flat file.

Table A has three colums. unique index on Num_col and Code_col and got 99 records

Num_col, Code_col and Days_col
10 01 007 days
10 02 010 days
.
.
10 99 015 days


Table B has two cols and got 1 million accounts

Account Days_col
1 7
2 10
3 7
...

1 million accounts

By mistake udpated table B's days_col with table A Days_col but it should update with code_col. Now i got a flag file with accounts, Days cols..
My requirement is that i need to read flat file and get account then read the table B's Days_col and then get corresponding record in table A but table A Days_col is not a index cols but it has unique records.

I know onc way can load table A in array and read table B record and search it in Array but i don't know how effiecnet. Is there any other we can code above requiremnt using DB2 query on A table.

raju
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dick scherrer

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Joined: 23 Nov 2006
Posts: 19270
Location: Inside the Matrix

PostPosted: Tue Jun 17, 2008 1:53 am    Post subject:
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Hello,

You could talk with your dba(s) about adding an index for the tableA days_col to facilitate the repair.

Once the data is correct, the index could be dropped (or even kept, if it would be useful for other joins).

Make sure a backup is taken before doing the repair icon_wink.gif
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