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rlnraju1979
New User
Joined: 23 Feb 2007
Posts: 7
Location: USA
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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
Moderator Emeritus
Joined: 23 Nov 2006
Posts: 19244
Location: Inside the Matrix
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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  |
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