<span> 1</span> <span>public</span> <span>function</span><span> test ( )
</span><span> 2</span> <span> {
</span><span> 3</span> <span>$User</span> = M('authlist'<span>);
</span><span> 4</span> <span>$rs</span> = <span>$User</span>-><span>join</span>('left join wifi_shop on wifi_authlist.shopid = wifi_shop.id')->field('
<span> 5</span> <span> wifi_authlist.id,
</span><span> 6</span> <span> wifi_authlist.shopid,
</span><span> 7</span> <span> wifi_authlist.routeid,
</span><span> 8</span> <span> wifi_authlist.mac,
</span><span> 9</span> <span> wifi_authlist.over_time,
</span><span>10</span> <span> wifi_shop.id,
</span><span>11</span> <span> wifi_shop.shopname,
</span><span>12</span> <span> wifi_shop.pid,
</span><span>13</span> <span> wifi_shop.trade,
</span><span>14</span> <span> wifi_shop.province,
</span><span>15</span> <span> wifi_shop.city,
</span><span>16</span> <span> wifi_shop.area,
</span><span>17</span> <span> count(wifi_authlist.mac) as times
</span><span>18</span> ')->where('wifi_shop.pid = %s',3)->group('wifi_authlist.mac')->order('over_time')->limit($Page->firstRow.','.$Page->listRows)->select()<span>;
</span><span>19</span> dump(<span>$rs</span><span>);
</span><span>20</span> }我这里查询的是 wifi_shop 跟 wifi_authlist 表,连接条件是
wifi_authlist.shopid = wifi_shop.id
一般要注意的是数据表包含前缀, 所以再join里 要加上前缀
三个表连接再加一个join就行
<span> 1</span> <span>$rs</span> = <span>$User</span>-><span>join</span>('left join wifi_shop on wifi_authlist.shopid = wifi_shop.id')-><span>join</span>('left join wifi_phonelist on wifi_authlist.mac = wifi_phonelist.mac')->field('
<span> 2</span> <span> wifi_authlist.id,
</span><span> 3</span> <span> wifi_authlist.shopid,
</span><span> 4</span> <span> wifi_authlist.routeid,
</span><span> 5</span> <span> wifi_authlist.mac,
</span><span> 6</span> <span> wifi_authlist.over_time,
</span><span> 7</span> <span> wifi_authlist.agent,
</span><span> 8</span> <span> wifi_shop.id,
</span><span> 9</span> <span> wifi_shop.shopname,
</span><span>10</span> <span> wifi_shop.pid,
</span><span>11</span> <span> wifi_shop.trade,
</span><span>12</span> <span> wifi_shop.province,
</span><span>13</span> <span> wifi_shop.city,
</span><span>14</span> <span> wifi_shop.area,
</span><span>15</span> <span> wifi_phonelist.mac,
</span><span>16</span> <span> wifi_phonelist.phone,
</span><span>17</span> <span> count(wifi_authlist.mac) as times
</span><span>18</span> ')->where('wifi_shop.pid = %s',<span>$pid</span>)->group('wifi_authlist.mac')->order('over_time')->limit(<span>$Page</span>->firstRow.','.<span>$Page</span>->listRows)->select();
