只是兩個使用例子，從別處摘來的，留著后面參考：

方式一：

1 $connection = Yii::$app->db; 2 $sql = "select * from hd_article where aid<".$aid." order by aid desc limit 1"; 3 $command = $connection->createCommand($sql); 4 $res = $command->queryAll($sql);

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方式二：

1 $query = new \yii\db\Query(); 2 $query->select('pa_call.id,pa_call.tableid,pa_call.time as msgtime,pa_table_area.id as areaid,pa_table_area.areaname as area,pa_table.tablename,pa_call.message as msg,pa_call.new as needoper,pa_call.status as isdone,pa_employee.username as oper') 3 ->from(Call::tableName()) 4 ->join('LEFT JOIN',Table::tableName(),'pa_call.tableid=pa_table.id') 5 ->join('LEFT JOIN',Area::tableName(),'pa_table_area.id=pa_table.areaid') 6 ->join('LEFT JOIN',Employee::tableName(),'pa_call.employeeid=pa_employee.id') 7 ->where($where); 8 $command = $query->createCommand(); 9 $data = $command->queryAll();

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轉載于:https://www.cnblogs.com/yunyunde/p/7156454.html

總結

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