/[sql-web-session]/index.cgi
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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revision 22 by dpavlin, Sat Apr 18 14:18:48 2009 UTC revision 23 by dpavlin, Sat Apr 18 23:14:41 2009 UTC
# Line 32  my @where_parts = param('where_parts'); Line 32  my @where_parts = param('where_parts');
32    
33  my $dbh = DBI->connect( $dsn, $user, '', { RaiseError => 1 } ) || die $DBI::errstr;  my $dbh = DBI->connect( $dsn, $user, '', { RaiseError => 1 } ) || die $DBI::errstr;
34    
35    sub where_from_parts {
36            return unless @_;
37            my @where_parts = @_;
38    
39            warn "# where_from_parts ",dump( @where_parts );
40    
41            my @w;
42            my @data;
43            foreach ( @where_parts ) {
44                    my ( $w,$v ) = split(/\?\t/,$_,2);
45                    push @w, "$w ?";
46                    push @data, $v;
47            }
48            unshift @data, ' where ' . join(' and ', @w);
49            warn "# ",dump( @data );
50            return @data;
51    }
52    
53  if ( my $group_by = param('lookup_col') ) {  if ( my $group_by = param('lookup_col') ) {
54    
55          my @cols = ( $group_by, "count($group_by)" );          my @cols = ( $group_by, "count($group_by)" );
# Line 49  if ( my $group_by = param('lookup_col') Line 67  if ( my $group_by = param('lookup_col')
67                  push @group_by, @join_cols;                  push @group_by, @join_cols;
68          }          }
69    
70            my @data = where_from_parts( @where_parts );
71    
72          my $sql = join("\n",          my $sql = join("\n",
73                  'select', join(',', @cols), qq{                  'select', join(',', @cols), qq{
74                  from $table                  from $table
75                  $join                  $join
76                  }, 'group by', join(',', @group_by), qq{                  }, shift @data, # extract where
77                    'group by', join(',', @group_by), qq{
78                  order by count($group_by) desc                  order by count($group_by) desc
79                  limit 10                  limit 10
80                  }                  }
# Line 63  if ( my $group_by = param('lookup_col') Line 84  if ( my $group_by = param('lookup_col')
84    
85          my $t = time();          my $t = time();
86          my $sth = $dbh->prepare( $sql );          my $sth = $dbh->prepare( $sql );
87          $sth->execute;          $sth->execute( @data );
88          $t = time() - $t;          $t = time() - $t;
89          print qq|$t<table><tr><th>|, join(qq|</th><th>|, @cols), qq|</th></tr>|;          print qq|$t<table><tr><th>|, join(qq|</th><th>|, @cols), qq|</th></tr>|;
90          while ( my @row = $sth->fetchrow_array ) {          while ( my @row = $sth->fetchrow_array ) {
# Line 105  my $c = join(',', @columns); Line 126  my $c = join(',', @columns);
126  my $sql = "select $c from $table";  my $sql = "select $c from $table";
127  my @data;  my @data;
128    
129  if ( @where_parts ) {  my @where = where_from_parts( @where_parts );
130          my @w;  $sql .= shift @where;
131          foreach ( @where_parts ) {  push @data, @where;
                 my ( $w,$v ) = split(/\?\t/,$_,2);  
                 push @w, "$w ?";  
                 push @data, $v;  
         }  
         $sql .= ' where ' . join(' and ', @w);  
 }  
   
132    
133  $sql .= ' group by ' . $group_by if $group_by;  $sql .= ' group by ' . $group_by if $group_by;
134  $sql .= ' order by ' . param('order_by') if param('order_by');  $sql .= ' order by ' . param('order_by') if param('order_by');

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