Index: lib/ddl/sql_generator.php
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- lib/ddl/sql_generator.php	(revision bd99cb90213b3195c7df14b30aa8060853489961)
+++ lib/ddl/sql_generator.php	(revision )
@@ -44,13 +44,13 @@
     // To change any of them, do it in extended classes instead.
 
     /** @var string Used to quote names. */
-    public $quote_string = '"';
+    public $quote_string = '`';
 
     /** @var string To be automatically added at the end of each statement. */
     public $statement_end = ';';
 
     /** @var bool To decide if we want to quote all the names or only the reserved ones. */
-    public $quote_all = false;
+    public $quote_all = true;
 
     /** @var bool To create all the integers as NUMBER(x) (also called DECIMAL, NUMERIC...). */
     public $integer_to_number = false;
Index: lib/dml/mysqli_native_moodle_database.php
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- lib/dml/mysqli_native_moodle_database.php	(revision bd99cb90213b3195c7df14b30aa8060853489961)
+++ lib/dml/mysqli_native_moodle_database.php	(revision )
@@ -1244,7 +1244,7 @@
             throw new coding_exception('moodle_database::insert_record_raw() no fields found.');
         }
 
-        $fields = implode(',', array_keys($params));
+	    $fields = '`'.implode('`,`', array_keys($params)).'`';
         $qms    = array_fill(0, count($params), '?');
         $qms    = implode(',', $qms);
 
@@ -1471,7 +1471,7 @@
 
         $sets = array();
         foreach ($params as $field=>$value) {
-            $sets[] = "$field = ?";
+	        $sets[] = "`".$field."`"." = ?";
         }
 
         $params[] = $id; // last ? in WHERE condition