Online Data Merge Tool

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  • Proposals: 5
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  • #23353
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Jim R.
Emanuel C.IT Infinity C.Steve C.Niwantha I. have already sent a proposal.
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Experience Level: Expert
I am looking for a web based system to be hosted on 123-reg (please see their server specifications for details) to be an online data merging tool. The chosen developer will be given beanstalk SVN Access to our development server.

The aim is that I upload a CSV of customer records. The CSV will contain multiple instances of unique customer records. The system will match duplicated records (based on email address) and merge the two records together.

The system will then output a CSV for download with no duplicate records.

Specifications/user flow as follows ...

1. Upload CSV to a page.
2. System merges multiple rows into unique rows matching by email address
3. On successful merge user is offered a link to the new CSV

I expect the CSVs to be about 100,000 rows in length.

I have attached example CSVs
Input = the file to be uploaded
Output = the file I would like the system to output.

I want the unique identifier/index field to be email.
After the merge their should be one row per email address.

These rules apply to all fields EXCEPT Attributes.

If a field is populated the row with the most recent date populates that field, overwriting the contents.

If a field is populated and the row with the most recent date is blank, the field shall remain as is ...
... i.e. a populated field should not be overwritten by a blank field, even when the blank field is newer.

If a field is blank the populated row with the most recent date populates that field.

If a field is blank and there is no data to populate that field it remains blank.

These rules apply to the Attributes field only

Wherever two rows are merged the Attributes field should become merged from both fields.
E.g. ||Hotel|| + ||Golf Member|| = ||Hotel||||Golf Member||

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