protected function _verifyClause(GroupByClause $clause, $fields)
{
$fields = Arrays::fuse($fields);
foreach ($clause->getFields() as $field) {
unset($fields[$field->getField()]);
}
return empty($fields);
}
public function groupBy($fields)
{
/**
* @var $this IStatement
*/
$groupClause = new GroupByClause();
if (func_num_args() > 1) {
foreach (func_get_args() as $field) {
$groupClause->addField($field);
}
} else {
if (is_array($fields)) {
foreach ($fields as $field) {
$groupClause->addField($field);
}
} else {
$groupClause->addField($fields);
}
}
$this->addClause($groupClause);
return $this;
}
public function testAssemble()
{
$clause = new GroupByClause();
$clause->addField((new FieldExpression())->setField('first'));
$this->assertEquals('GROUP BY first', QueryAssembler::stringify($clause));
}