Hi,
Can I use two different columns in one matching block?
If yes then can I set a match pass based on two blocking columns where any of them can be matching.
Is it feasible to create a subset based on block col1 or col 2
Example: If col1 and col2 are the blocking column for pass 1
col1 col2
Record 1:a b
Record 2:a b
Record 3:a
Record 4: b
In the above examples all these four records should be a part of one pool since they have at least one common column value according to my hypothesis.
Please suggest me if it is doable in Unduplicated dependent matching stage.
Match specification-Blocking Columns
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BuddingDev
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stuartjvnorton
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You can have more than 1 blocking field per pass, but all specified blocking fields have to be satisfied within a single pass. If you want either field 1 or field 2 to qualify a record, you would need to have them in separate passes.
As to whether it's doable as undup dependent, it would be possible if:
- you had pass 1 using column 1 to block and records 1, 2 and 3 all exceed the match threshold
- records 1 or 2 are set as the master for the block
- pass 2 uses column 2 to block, so record 1 or 2 and 4 will be added if 4 exceeds the pass 2 match threshold.
So yes it is possible, but it depends on matching fields and cutoffs, which you haven't told us anything about.
As to whether it's doable as undup dependent, it would be possible if:
- you had pass 1 using column 1 to block and records 1, 2 and 3 all exceed the match threshold
- records 1 or 2 are set as the master for the block
- pass 2 uses column 2 to block, so record 1 or 2 and 4 will be added if 4 exceeds the pass 2 match threshold.
So yes it is possible, but it depends on matching fields and cutoffs, which you haven't told us anything about.
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BuddingDev
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Appreciate your quick response. Now, I am in the process of applying it by working around cutoff value and etc.
However, I have one related doubt to the same problem. Can somebody tell me what happens when one of the matching column's value is missing.
Such as...
Example: If col1, col2 are the blocking columns for pass 1 and matching columns are col1, col2, col3 and col4.
col1 col2 col3 col4
Record 1:a b c d
As col4 is missing from only record 2. What would be the weight for this compared column 4.
However, I have one related doubt to the same problem. Can somebody tell me what happens when one of the matching column's value is missing.
Such as...
Example: If col1, col2 are the blocking columns for pass 1 and matching columns are col1, col2, col3 and col4.
col1 col2 col3 col4
Record 1:a b c d
As col4 is missing from only record 2. What would be the weight for this compared column 4.