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Re^2: Author separation

by Shaveta_Chawla (Sexton)
on Jun 07, 2012 at 11:01 UTC ( #974916=note: print w/replies, xml ) Need Help??

in reply to Re: Author separation
in thread Author separation

I have used this code:
$author = "Cheng, Liying, Fox, Janna., Zheng, Ying."; @author = split(',' , $author); $length = scalar(@author); $l = 0; $j = 1; for($i=0; $i<$length/2 ; $i++) { $author1[$i]= "$author[$j] $author[$l]"; $l = $l+2; $j = $j+2; } $author = join (',' , @author1); print "$author\n\n";
but this is not feasible

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[Corion]: Meh. SQL window functions would even make pagination easy/trivial (but not performant), as rank() over (partition by user order by timestamp) / 10 as page would give me a page number for each item, with 10 items per page.
[Corion]: Of course, the query performance for "all items on page 10" is likely worse than rank() between 100 and 109 , but if that means I can write 15 lines of SQL instead of needing to think about how to partition things and how to encode the page size...
[Corion]: ... that would be nice. But alas, I'm currently tied to SQLite as minimum implementation, and it doesn't implement window functions :-(
[Corion]: And I'm not aware of any other serverless SQL implementation that even reaches the capability of SQLite, not to mention surpasses it

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