/**
* Create where clause
*
* @param Where|\Closure|string|array|Predicate\PredicateInterface $predicate
* @param string $combination One of the OP_* constants from Predicate\PredicateSet
* @throws Exception\InvalidArgumentException
* @return Select
*/
public function where($predicate, $combination = Predicate\PredicateSet::OP_AND)
{
if ($predicate instanceof Where) {
$this->where = $predicate;
} else {
$this->where->addPredicates($predicate, $combination);
}
return $this;
}