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<?php
namespace Wandu\Database\Query\Expression;
/**
* WhereExpression = 'WHERE ' ComparisonExpression (' AND '|' OR ') LogicExpression | ComparisonExpression
*
* @example WHERE `abc` = 30
* @example WHERE `abc` = 30 AND (`foo` = 30 OR `foo` = 40)
*/
class WhereExpression extends LogicalExpression
{
public function toSql()
$sql = '';
foreach ($this->expressions as $index => $expression) {
if ($index) {
$sql .= ' ' . $this->operators[$index] . ' ';
}
$sql .= $expression->toSql();
return $sql ? 'WHERE '. $sql : '';
Wandu /
Framework
