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Fix upgrade that MySQL could not cope with.

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This commit is contained in:
tjhunt
2007-03-01 16:47:55 +00:00
parent 341e99513b
commit 31f6834e36
1 changed files with 5 additions and 6 deletions
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mod/quiz/db/upgrade.php
+5 -6
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@@ -28,16 +28,15 @@ function xmldb_quiz_upgrade($oldversion=0) {
/// this comment lines once this file start handling proper
/// upgrade code.
/// if ($result && $oldversion < YYYYMMDD00) { //New version in version.php
/// $result = result of "/lib/ddllib.php" function calls
/// }
if ($result && $oldversion < 2007022800) {
/// Ensure that there are not existing duplicate entries in the database.
delete_records_select('question_numerical_units', "id > (SELECT MIN(iqnu.id)
$duplicateunits = get_records_select('question_numerical_units', "id > (SELECT MIN(iqnu.id)
FROM {$CFG->prefix}question_numerical_units iqnu
WHERE iqnu.question = {$CFG->prefix}question_numerical_units.question AND
iqnu.unit = {$CFG->prefix}question_numerical_units.unit)");
iqnu.unit = {$CFG->prefix}question_numerical_units.unit)", '', 'id');
if ($duplicateunits) {
delete_records_select('question_numerical_units', 'id IN (' . implode(',', array_keys($duplicateunits)) . ')');
}
/// Define index question-unit (unique) to be added to question_numerical_units
$table = new XMLDBTable('question_numerical_units');