Asif Javed's Blog

$this->render ('topnav.phtml')
$this->partial('topnav.phtml')
Render has the same variable scope as the script from which it is being called. Therefore, we must be careful of variable clashes. while partial helper render a view script within its own scope. There is one downside to partial helper though, it has to clone a lot of objects to get the view into its own scope, which means there is a performance hit while using it.

UPDATE table1
INNER
JOIN table2
ON table2.something = table1.something
SET table2.field2 = table1.user

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