--- loncom/interface/loncoursedata.pm	2004/04/06 15:45:13	1.130
+++ loncom/interface/loncoursedata.pm	2004/05/13 13:55:35	1.133
@@ -1,6 +1,6 @@
 # The LearningOnline Network with CAPA
 #
-# $Id: loncoursedata.pm,v 1.130 2004/04/06 15:45:13 matthew Exp $
+# $Id: loncoursedata.pm,v 1.133 2004/05/13 13:55:35 matthew Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -580,7 +580,7 @@ sub init_dbs {
                       restrictions => 'NOT NULL',
                       auto_inc     => 'yes', },
                     { name => 'part',
-                      type => 'VARCHAR(100)',
+                      type => 'VARCHAR(100) BINARY',
                       restrictions => 'NOT NULL'},
                     ],
         'PRIMARY KEY' => ['part (100)'],
@@ -595,16 +595,16 @@ sub init_dbs {
                       restrictions => 'NOT NULL',
                       auto_inc     => 'yes', },
                     { name => 'student',
-                      type => 'VARCHAR(100)',
+                      type => 'VARCHAR(100) BINARY',
                       restrictions => 'NOT NULL UNIQUE'},
                     { name => 'section',
-                      type => 'VARCHAR(100)',
+                      type => 'VARCHAR(100) BINARY',
                       restrictions => 'NOT NULL'},
                     { name => 'status',
-                      type => 'VARCHAR(15)',
+                      type => 'VARCHAR(15) BINARY',
                       restrictions => 'NOT NULL'},
                     { name => 'classification',
-                      type => 'varchar(100)', },
+                      type => 'VARCHAR(100) BINARY', },
                     { name => 'updatetime',
                       type => 'INT UNSIGNED'},
                     { name => 'fullupdatetime',
@@ -629,7 +629,7 @@ sub init_dbs {
                       type => 'MEDIUMINT UNSIGNED',
                       restrictions => 'NOT NULL' },
                     { name => 'part',
-                      type => 'VARCHAR(100)',
+                      type => 'VARCHAR(100) BINARY',
                       restrictions => 'NOT NULL'},                    
                     { name => 'solved',
                       type => 'TINYTEXT' },
@@ -709,7 +709,7 @@ sub init_dbs {
                     { name => 'awarddetail',
                       type => 'TINYTEXT' },
 #                    { name => 'message',
-#                      type => 'CHAR' },
+#                      type => 'CHAR BINARY'},
                     { name => 'response_specific',
                       type => 'TINYTEXT' },
                     { name => 'response_specific_value',
@@ -2030,12 +2030,14 @@ sub get_problem_statistics {
     }
     my ($solved) = &execute_SQL_request($dbh,$request);
     #
+    $Solved -= $solved;
+    #
     $num    = 0 if (! defined($num));
     $tries  = 0 if (! defined($tries));
     $max    = 0 if (! defined($max));
     $min    = 0 if (! defined($min));
     $STD    = 0 if (! defined($STD));
-    $Solved = 0 if (! defined($Solved));
+    $Solved = 0 if (! defined($Solved) || $Solved < 0);
     $solved = 0 if (! defined($solved));
     #
     # Compute the more complicated statistics
@@ -2456,14 +2458,14 @@ sub count_stats {
         $request .= ' AND '.$enrollment_limits;
     }
     $request .= ' GROUP BY a.student_id';
-    &Apache::lonnet::logthis('request = '.$/.$request);
+#    &Apache::lonnet::logthis('request = '.$/.$request);
     my $sth = $dbh->prepare($request);
     $sth->execute();
     $request = 
         'SELECT AVG(count),STD(count),MAX(count),MIN(count),COUNT(count) '.
         'FROM '.$stats_table;
     my ($ave,$std,$max,$min,$count) = &execute_SQL_request($dbh,$request);
-    &Apache::lonnet::logthis('request = '.$/.$request);
+#    &Apache::lonnet::logthis('request = '.$/.$request);
     return($min,$max,$ave,$std,$count);
 }