如何在propel中使用子查詢獲取行計數（從其他表中）？

Question

我想要做這樣的事情：

SELECT a.*, (SELECT COUNT(*) FROM b where b.col1 = a.col2) as count FROM a 

使用推動標準與否這可能嗎？

Answer 1

$c = new Criteria(); 
$c->addSelectColumn(aPeer::TABLE_NAME.'.*'); 
$c->addAsColumn('count', '(SELECT COUNT(*) FROM b WHERE b.col1 = a.col2)'); 
aPeer::doSelect($c);