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Re: Database MySQL Perl

by shmem (Chancellor)
on Feb 27, 2012 at 09:24 UTC ( #956407=note: print w/replies, xml ) Need Help??

in reply to Database MySQL Perl

1. What value is stored in @intervals

Since @intervals denotes an array, most likely it holds a list of values - only one would just be a special case. The array holds what is returned from the search method of the object provided by resultset.

If in doubt, have a look:

{ my $c; for my $thingy (@intervals) { printf "%2d. '%s'\n",++$c, $thingy; } }
2. How is it possible to have 'Aggregation' in code and 'aggregation' table in database

It's possible with some piece of software which does the connection between 'Aggregation' and 'aggregation', probably by upper-/lowercasing the identifier.

3. What does 'undef' signify here.

It means just what undef means anywhere else: a placeholder for nothing, which is just about the same as the NULL value in a database cell.

Have a look at the documentation of DBIx::Class and DBIx::Class::ResultSet.

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Re^2: Database MySQL Perl
by akagrawal3 (Beadle) on Feb 27, 2012 at 09:44 UTC
    Thank you very much :)

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[james28909]: it would be to much work just to get around renaming three subs lol
[james28909]: but you could put it all in one sub and return the same data type that was inputted. i could write a small example maybe
[Lady_Aleena]: Their uses are also vastly different.
[Lady_Aleena]: The first two make hashes and arrays from a file, the third returns data from a pre-existing hash.
[Lady_Aleena]: Well, HoH and AoH respectively.
[Lady_Aleena]: But if you want to play, play. I don't mind. 8)

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