+ function appendAlterAddPrimary(array &$phrase, array $def)
+ {
+ $sql = array();
+ $sql[] = 'ADD';
+ $this->appendPrimaryKeyDef($sql, $def);
+ $phrase[] = implode(' ', $sql);
+ }
+
+ function appendAlterDropPrimary(array &$phrase)
+ {
+ $phrase[] = 'DROP CONSTRAINT PRIMARY KEY';
+ }
+