清空数据库中所有表--连表删除
public function trun(){
$sql = "show tables";
$info = M()->query($sql);
// echo '<meta http-equiv="Content-type" content="text/html:charset=utf-8">';
// echo '<pre>';
// var_dump($info);
foreach($info as $k=>$v){
$sql = "truncate table ".$v['tables_in_tripb'];
$num = M()->execute($sql);
var_dump($num);
}
}
=========连表删除
delete t_apply
from t_apply , t_applyitems
where t_apply.apply_applicant_id = t_applyitems.applyitem_applyid
and t_apply.apply_applicant_id = 363;