====== setCommentSql ======
~~NOTOC~~
<WRAP right box>
== Syntax ==
  string setCommentSql(
    string $tableName,
    string $columnName,
    string $comment
    )
</WRAP>
===== Description =====
The method ''setCommentSql()'' returns a string containing the SQL necessary to set the column comments on a table to the specified value, if the database supports it. 

Note that this function is currently only supported on Oracle databases
----------------------------------
===== Usage =====
<code php>
/*
* On an Oracle Database
*/
$dict = newDataDictionary($db);
$s = $dict->setCommentSql('mytable', 'mycolumn', 'This is a comment');
print $s;
/*
* Prints: COMMENT ON COLUMN mytable.mycolumn IS 'This is a comment';
*/
</code>
===== Notes =====
  * Support for this method is limited
  * Special rights may be required to execute the returned SQL
  * If not supported, the method returns false