X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~yarrgweb/git?a=blobdiff_plain;f=yarrg%2Fweb%2Fquery_commod;h=9a7d2bc36dc7bad67e67bfbc6c92688e6902862a;hb=b939ad368af00f2265a915d259041b8e2cb303c4;hp=aeee3cee83d0bf8288ee79903ec005e20b36f4fc;hpb=608bc9e07b5c8a961325fd1b8d5b92f65418b949;p=ypp-sc-tools.db-test.git
diff --git a/yarrg/web/query_commod b/yarrg/web/query_commod
index aeee3ce..9a7d2bc 100644
--- a/yarrg/web/query_commod
+++ b/yarrg/web/query_commod
@@ -91,16 +91,26 @@ $someresults->();
foreach my $bs (split /_/, $ARGS{BuySell}) {
$bs =~ m/^(buy|sell)$/ or die;
$bs= $1;
+ my ($ascdesc) = ($bs eq 'buy')
+ ? ('DESC')
+ : ('ASC');
+
+ my $islands= $dbh->prepare(
+ "SELECT islandid, archipelago, islandname, sum(qty) as tqty
+ FROM $bs NATURAL JOIN islands
+ WHERE commodid = ?
+ GROUP BY islandid,
+ ORDER BY archipelago, islandname"
+ );
- my $sth= $dbh->prepare(
- "SELECT archipelago, islandname, stallname, price, qty
- FROM $bs NATURAL JOIN stalls NATURAL JOIN islands
- WHERE commodid = ?"
+ my $offers= $dbh->prepare(
+ "SELECT stallname, price, qty
+ FROM $bs NATURAL JOIN stalls
+ WHERE commodid = ? AND islandid = ?
+ ORDER BY price $ascdesc"
);
# fixme this query is utterly wrong
- $sth->execute($commodid);
-
%perl>
Offers to <% uc $bs |h %> <% $commodname |h %>
@@ -109,17 +119,43 @@ foreach my $bs (split /_/, $ARGS{BuySell}) {
Archipelago
| Island
- | Best stall
+ | Unique best stall
| Best price
| Qty at best
+ | Median price
+ | Total qty
|
-% my $row;
-% while ($row=$sth->fetchrow_hashref) {
- <% $row->{'archipelago'} %>
- | <% $row->{'islandname'} %>
- | <% $row->{'stallname'} %>
- | <% $row->{'price'} %>
- | <% $row->{'qty'} %>
+% $islands->execute($commodid);
+% my $island;
+% while ($island= $islands->fetchrow_hashref) {
+% my $islandid= $island->{'islandid'};
+% $offers->execute($commodid, $islandid);
+% my ($offer, $best, $median);
+% my $tqty= $island->{'tqty'};
+% my $cqty= 0;
+% while ($offer= $offers->fetchrow_hashref) {
+% if (!$best) {
+% $best= { 'price' => $offer->{'price'} };
+% }
+% if ($offer->{'price'} == $best->{'price'}) {
+% $best->{'qty'} += $offer->{'qty'};
+% push @{ $best->{'stalls'} },
+% $offer->{'stallname'};
+% }
+% $cqty += $offer->{'qty'};
+% if ($cqty*2 >= $tqty && !defined $median) {
+% $median= $offer->{'price'};
+% }
+% }
+% $cqty == $tqty or die "$bs $cqty $tqty $commodid $islandid ";
+% my $nstalls= @{ $best->{'stalls'} };
+ |
<% $island->{'archipelago'} |h %>
+ | <% $island->{'islandname'} |h %>
+ | <% $nstalls==1 ? $best->{'stalls'}[0] : "$nstalls offers" |h %>
+ | <% $best->{'price'} %>
+ | <% $best->{'qty'} %>
+ | <% $median %>
+ | <% $tqty %>
|
% }