diff --git a/ChangeLog b/ChangeLog
index d1ba2716d63d..5251e8e148f8 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -68,6 +68,7 @@ explanation
 4.3.13.0 (not yet released)
 - bug #4803 "Show hidden items" is sometimes hidden
 - bug #4807 Breaks when sorting by multiple columns while using UNION
+- bug #4798 Missing column when exporting in sql
 
 4.3.12.0 (2015-03-14)
 - bug #4746 Right-aligned columns have left-aligned header
diff --git a/libraries/plugins/export/ExportSql.class.php b/libraries/plugins/export/ExportSql.class.php
index fcd89ac6f57c..91227abcd8d5 100644
--- a/libraries/plugins/export/ExportSql.class.php
+++ b/libraries/plugins/export/ExportSql.class.php
@@ -1374,9 +1374,10 @@ public function getTableDef(
                 // lets find first line with constraints
                 $first_occur = -1;
                 for ($i = 0; $i < $sql_count; $i++) {
+                    $sql_line = current(explode(' COMMENT ', $sql_lines[$i], 2));
                     if (preg_match(
                         '@[\s]+(CONSTRAINT|KEY)@',
-                        $sql_lines[$i]
+                        $sql_line
                     ) && $first_occur == -1) {
                         $first_occur = $i;
                     }