The basic technique for sorting on multiple columns in a set of records (an array of arrays) is: 

my $primary_sort_column = n;
my $secondary_sort_column = n;
my $tertiary_sort_column = n;

my @sorted_records = sort {
    $a->[$primary_sort_column] op $b->[$primary_sort_column];
    ||
    $a->[$secondary_sort_column] op $b->[$secondary_sort_column];
    ||
    $a->[$tertiary_sort_column] op $b->[$tertiary_sort_column];
) @unsorted_records;

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n is an integer; op is typically cmp (lexical ordering) or the spaceship operator <=> (numeric ordering)

Take a look at sort for details.

-- Ken

In reply to Re: Date to be sorted in descending and time in ascending by kcott
in thread Date to be sorted in descending and time in ascending by karthik7887

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