On 05/26/00, "Greg Wardawy <[EMAIL PROTECTED]>" wrote:
> but I can't find my way to complete this task. From the following csv file
> I need to print just the lines for which the sum of the seventh element for
> this same fourth element is >= 3 (e.g.), the third element is in dopo.csv
> and the fifth element is not in nostock.csv:
> 3,1000000015,R518672,206,HAVCONSTRUCTION,17.99,1,05,17,00
just read in all three files, keep a running total
on the third and filter out the is/isn't in constraints,
then go back and print whatever passes the sum constraint:
# Assuming all files are opened ok
# And we remember to close them
while (<DOPO>) {
chomp;
s/,.*//;
$dopo{$_}=1;
}
while (<STOCK>) {
chomp;
s/,.*//;
$stock{$_}=1;
}
while (<ORD>) {
my ($dopo, $key, $stock, $value) = (split /,/)[2,3,4,6];
next unless $dopo{$dopo} and !$nostock{$stock}
$totals{$key} += $value;
# Save in memory? or open file again later?
push (@ord_array, $_)
}
for (@ord_array) {
my ($key) = (split /,/)[3];
next unless $totals{$key} >= 3;
print;
}
HTH,
Douglas Wilson
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