记录:fastadmin 列表页表格实现动态列 后端代码 /*** 商品库存余额表*/public function kucunbalance(){$houseList (new House)->where([shop_id>SHOP_ID])->order(id desc)->field(name,id)->select();//设置过滤方法$this->request->filte…
1.测试表,及测试语句where条件中OR对应两个字段选择度很高 create table t618 as select * from dba_objects; select object_name from t618 where (object_id12043 or DATA_OBJECT_ID12043) and STATUSVALID; 2.没有索引情况下,全表扫描逻辑读…