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Chunk select with redbean


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I have been starded using redbean.
I have a really big table and want to select 5000 rows at time using redbean!
I want only the rows where the field "status" IS NULL
This is my code:


$min = R::$c->begin()->addSQL('SELECT MIN(id)')->from('emailtable')->get('cell');
$max = R::$c->begin()->addSQL('SELECT MAX(id)')->from('emailtable')->get('cell');
for ($i = $min; $i < $max; $i = $i + 5000) {
$x = $i;
$y = $i + 5000;

$select = R::$c->begin()
->addSQL(' SELECT * ')
->where(" id >= ? AND id < ? AND status IS NULL ")
Anyone know if this is the right way to go!
Should i use:
id >= ? AND id < ? AND status IS NULL

or maybe i should use BETWEEN but not sure.



My problem is The code above is sometimes selecting same id twice and that is what i do not expect!

there for i ask if there is a other solution four the code above!


All ides are welcome. It is really hard to find information about redbean/chunk/select/ example




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