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方法一:使用table()方法
$tables = ‘b_order ordert, b_busbid busbid‘; $map[‘busbid.buscompanyid‘] = 1; $map[‘busbid.status‘] = 1; $map[‘_string‘] = ‘ordert.id = busbid.orderid‘; $result = M()->table($tables)->where($map)->field(‘busbid.*‘)->select();
方法二:使用join() 方法
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原文地址:http://www.cnblogs.com/wangyuman26/p/5555830.html