protected function compareToSimilarSchema(PhabricatorConfigStorageSchema $expect)
 {
     $issues = array();
     if ($this->getCharacterSet() != $expect->getCharacterSet()) {
         $issues[] = self::ISSUE_CHARSET;
     }
     if ($this->getCollation() != $expect->getCollation()) {
         $issues[] = self::ISSUE_COLLATION;
     }
     return $issues;
 }
 protected function compareToSimilarSchema(PhabricatorConfigStorageSchema $expect)
 {
     $issues = array();
     $type_unknown = PhabricatorConfigSchemaSpec::DATATYPE_UNKNOWN;
     if ($expect->getColumnType() == $type_unknown) {
         $issues[] = self::ISSUE_UNKNOWN;
     } else {
         if ($this->getCharacterSet() != $expect->getCharacterSet()) {
             $issues[] = self::ISSUE_CHARSET;
         }
         if ($this->getCollation() != $expect->getCollation()) {
             $issues[] = self::ISSUE_COLLATION;
         }
         if ($this->getColumnType() != $expect->getColumnType()) {
             $issues[] = self::ISSUE_COLUMNTYPE;
         }
         if ($this->getNullable() !== $expect->getNullable()) {
             $issues[] = self::ISSUE_NULLABLE;
         }
         if ($this->getAutoIncrement() !== $expect->getAutoIncrement()) {
             $issues[] = self::ISSUE_AUTOINCREMENT;
         }
     }
     return $issues;
 }