ThinkPHP之数据删除和执行原生SQL语句

一.数据删除

delete() 返回受影响的记录条数

$goods->delete(30);//删除主键值等于30的记录信息
$goods->delete("10,12,14");//删除主键值等10，12，14的三条 记录
$goods->where("goods_id>60")->delete();//把符合条件的记录都给删除

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二. 执行原生SQL语句

1. 查询语句query() 返回一个二维数组信息
2. 添加、修改、删除 execute() 返回受影响的记录条数
   $goods = D(“Goods”);
   $sql = “select * from sw_goods”;
   $rst = $goods -> query($sql);

$sql = “select goods_category_id,avg(goods_price) from sw_goods group by goods_category_id having avg(goods_price)>1000”;
$goods -> query($sql);

$sql = “update sw_goods set goods_name = ‘htc_two’ where goods_id=100”;
$goods -> execute($sql);