mysql - Masalah dengan operasi koheren dalam ThinkPHP3.2.3?

Question

Kod

Pernyataan SQL ialah
SELECT crsIpint,crsIpout,crsName,wfdz,CheckStatus,0 AS flag FROM vehicle.crossing AS t1 LEFT JOIN ( SELECT * FROM caminfo.devs_ip_status WHERE type = 95 ) AS t2 ON( t1.crsId = t2.DeviceID ) WHERE t1.type <> 0 LIMIT 0,20 UNION ( SELECT ip AS crsIpint,"" AS crsIpout,name AS crsName,"主服务器" AS wfdz,1 AS CheckStatus,1 AS flag FROM trk.devs_other WHERE type = 101 )

Apa yang saya mahukan ialah
PILIH crsIpint,crsIpout,crsName,wfdz,CheckStatus,0 AS flag FROM vehicle.crossing AS t1 LEFT JOIN ( SELECT * FROM caminfo.devs_ip_status WHERE type = 95 ) AS t2 ON( t1.crsId = t2.DeviceID ) WHERE t1.type <> 0 UNION ( SELECT ip AS crsIpint,"" AS crsIpout,name AS crsName,"主服务器" AS wfdz,1 AS CheckStatus,1 AS flag FROM trk.devs_other WHERE type = 101 ) HAD 0,20
Data ini bolehkah anda beritahu saya cara menulis kod yang koheren? ? ?

Dan apabila menggunakan SQL asli, ia sentiasa melaporkan bahawa kaedah pertanyaan tidak wujud

Answer 1

$Model = M(); Hanya tambah garis miring apabila membuat instantiat dan pertanyaan boleh digunakan

Answer 2

kaedah pertanyaan tidak wujud, itu bermakna $crossingModel bukan model, cuba cetak $crossingModel

Answer 3

Kaedah satu
Gunakan pertanyaan
$sql='';//Penyataan sql asli
$res = M()->query($sql);
Kaedah dua:
1 $count=M('')- sertai ()->where($where)->count();//Dapatkan jumlah rekod
//$halaman nombor halaman 10 memaparkan data pada setiap halaman
2 $pagearr=getPageArr($page,10, $count) ;
//Kaedah yang digunakan untuk paging disyorkan untuk diletakkan bersama
fungsi getPageArr($page, $pagesize = 10, $count)
{

$page                    = isset($page) ? abs(intval($page)) : 1;
$pagesize                = isset($pagesize) ? abs(intval($pagesize)) : 10;
$page > 100000 && $page  = 100000;
$pagesize > 100 && $page = 100;
$pagetotal               = ceil($count / $pagesize);
($page > $pagetotal) && ($page = $pagetotal);
($page < 1) && ($page = 1);

//下一页
if ($page > $pagetotal) {
    $nextpage = $pagetotal;
} else {
    $nextpage = $page + 1;
}
//上一页
if ($page > 1) {
    $prevpage = $page - 1;
} else {
    $prevpage = $page;
}

$pagearr = array(
    "page"      => $page,
    "pagesize"  => $pagesize,
    "pagetotal" => $pagetotal,
    "count"     => $count,
    "start"     => ($page - 1) * $pagesize,
    "nextpage"  => $nextpage,
    "prevpage"  => $prevpage,

);
return $pagearr;

}
3 Kemudian had anda boleh ditulis seperti ini

->had($pagearr['mula'],$pagearr['pagesize'])