Hi Everybody, I've tab delimited data as below: 
Retid     State    Rate
25    NJ    7.000
26    NJ    7.000
40    IL    9.750
40    IN    7.000
40    MI    6.000
40    WI    5.500
44    CT    6.000
50    NJ    7.000
87    VA    4.500

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I want all unique Retid, comma seperated State & State corresponding to that Retid. Later I would need to add this data into different xml file by comparing Retid (Which is already in other file). I think using hashes would be OK as I don't want to read file everytime (else script will run longer), but not sure how to do this! Could anyone please suggest?

I've tried something like below: 
open(IN, $taxFile) || die "$taxFile couldn't be opened $@\n";

while(<IN>)     {
        chomp;
        @line = split("\t");
        $sid = $line[0];
        $sidHash{$sid}{state} = $line[1];
        $sidHash{$sid}{rate} = $line[2];
}

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Output file would be as below, where I'll add these 2 tags i.e. state & rate. Rest tags were read & printed from different file. 
  <RetId="40">
    <name>xyz</name>
    <url>http://www.xyz.net</url>
    <type>CPC</type>
    <logoUrl/>
    <ntParentAcct>5403020</ntParentAcct>
    <feedCount>1</feedCount>
    <feedNumbers>1</feedNumbers>
    <state>IN, MI, WI</state>
    <rate>7.000, 6.000, 5.500</rate>
  </RetId>

[download]

In reply to CSV file info into xml tags by CSharma

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