My additional wish:
Please comment your PHP Code and Javascript Code with standard doc-blocks:

for php with PHP-Doc

for Javascript with JS-Doc.

So it's possible to generate on the fly with some tools a documentation from your
source code ;)

Ok thanks for the info will take care of it.

i agree with marc,we should not keep visual query builder as a separate plugin and offer both as already installed.
we can provide an option to users to switch between db_qbe.php and visual query builder
inside the "Query" tab.

Or would it be better: if Javascript and jQuery running using yours, else using db_qbe.php?

sorry i didn't get your question,

I was suggesting to provide an option to the users to switch between 'visual query builder' and the current version.
in the 'Query'(multi-table query generator) tab.
i will be using code from db_qbe.php.

Regards,
Ankit