所以Zend_db_select有方法
`joinUsing(table, join, [columns]) and joinInnerUsing(table, join, [columns])`
`joinLeftUsing(table, join, [columns])`
`joinRightUsing(table, join, [columns])`
`joinFullUsing(table, join, [columns])`
等
但是如果你想加入3个或更多的表(例如,多对多的关联)会怎么样......例如:这个查询:
SELECT * FROM (j LEFT JOIN e ON j.id = e.eee) LEFT JOIN w ON w.www = e.id
你将如何使用zend_db_select
进行此操作答案 0 :(得分:0)
尝试使用子查询和Zend_Db_Expr。阅读更多here。
答案 1 :(得分:0)
尝试做...但我不太确定使用两个字段,但没有尝试使用3个字段
$dbmodel->select(false)
->setIntegrityCheck(false)
->from(array('t1' => 'table1'))
->joinLeft(array('t2' => 'table2'),
't1.somefeild = t2.somefeild')
->joinLeft(array('t3' => 'table3'),
't2.somefeild = t3.somefeild')
您尝试构建查询,还可以按die((string)$select)