Apologies for the previous "long" message..
The reason I care about the order of the line numbers is that this is the order that the data will be loaded into the new RDBMS. A query is going to loop through the file to obtain result sets based on the values in this file. The target RDBMS (SAP) is configured so that if there is an attempt to load a child object before it's parent then the whole import fails. So, as an example, if you have the following records in a source file, where the record on the left is the child and the one on the right is the parent...
A1-4100-YZX-002|A1-4100
A1-4100|A1
A1-4200-ABC-001|A1-4200
A1-4200|A1
A1-4100-YZX-002-01|A1-4100-YZX-002

In this order the data will not load. What I am trying to do is re-order the same data as....
A1|TOP
A1-4100|A1
A1-4100-YZX-002|A1-4100
A1-4100-YZX-002-01|A1-4100-YZX-002
A1-4200|A1
A1-4200-ABC-001|A1-4200

This would also load....
A1|TOP
A1-4100|A1
A1-4200|A1
A1-4100-YZX-002|A1-4100
A1-4100-YZX-002-01|A1-4100-YZX-002
A1-4200-ABC-001|A1-4200
I don't need to worry about the very,very top number "A1" as this is pre-configured in the target database as the highest-on-high, everything else needs to follow below.

I think that the problem may (and I stress "may") be that within the data, there are "child, father, grandfather" relationships, however, your last statement about the "random" order of the returned hash keys and returning the result set in a specific order by sorting "before" the grep function may be the "key" (sorry for the pun on the word key, couldn't help it)
regards
SlackyB

In reply to Re^6: Perl modules or standard tools for searching hierachical data by SlackBladder
in thread Perl modules or standard tools for searching hierachical data by SlackBladder

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