如何在推进中使用子查询获取行计数（来自其他表）？

Question

我想做这样的事情：

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

是否可以使用推进标准？

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);