注:$c = new CDbCriteria();是ActiveRecord的一种写法,使ActiveRecord更加灵活,而不是手册中DAO(PDO)和Query Builder。
这是Yii CDbCriteria的一些笔记和常用用法:
一、一个sql拼装的情况
$criteria = new CDbCriteria;
$criteria->addCondition("id=1"); //查询条件,即where id = 1
$criteria->addInCondition('id', array(1,2,3,4,5)); //代表where id IN (1,23,,4,5,);
$criteria->addNotInCondition('id', array(1,2,3,4,5));//与上面正好相法,是NOT IN
$criteria->addCondition('id=1','OR');//这是OR条件,多个条件的时候,该条件是OR而非AND
$criteria->addSearchCondition('name', '分类');//搜索条件,其实代表了。。where name like '%分类%'
$criteria->addBetweenCondition('id', 1, 4);//between 1 and 4
$criteria->compare('id', 1); //这个方法比较特殊,他会根据你的参数自动处理成addCondition或者addInCondition,
//即如果第二个参数是数组就会调用addInCondition
$criteria->addCondition("id = :id");
$criteria->params[':id']=1;
//属性方式
$criteria->select = 'id,parentid,name'; //代表了要查询的字段,默认select='*';
$criteria->join = 'xxx'; //连接表
$criteria->with = 'xxx'; //调用relations
$criteria->limit = 10; //取1条数据,如果小于0,则不作处理
$criteria->offset = 1; //两条合并起来,则表示 limit 10 offset 1,或者代表了。limit 1,10
$criteria->order = 'xxx DESC,XXX ASC' ;//排序条件
$criteria->group = 'group 条件';
$criteria->having = 'having 条件 ';
$criteria->distinct = FALSE; //是否唯一查询
实例:
$criteria = new CDbCriteria();
$criteria->select = 'table_name,model_id,sum(amount) total';
$criteria->group = 'table_name,model_id';
$criteria->addCondition("$nIdcId=4");//也可以$criteria->condition = "$nIdcId=4";
$aResult = accessory_info::model()->findAll($criteria);
$c = new CDbCriteria();
$c->select = 't.id, t.created_at, t.outsource_id, t.user_id, t.operate, t.content';
$c->join = 'LEFT JOIN outsource ON outsource.id=t.outsource_id';
$c->condition = 'outsource.idc_id IN(' . implode(',', $idc_ids) . ')';
if($last_log_id) {
$c->condition .= " AND t.id > $last_log_id";
}
$c->limit = 20;
$c->order = 't.id DESC';
$logs = OutsourceProcessLog::model()->findAll($c);
批注:
1,与DAO方式结果区别是:DAO方式 数组中的每一个元素仍是数组。而通过CDbCriteria方式,数组中的元素是对象。
2,即使该功能很强大,仍有一些需求不能满足,此时仍需sql语句。比如select avg(num) amount from ****。
二、mergeWith的情况
//在ActiveRecord中,增加条件限制
$this->getDbCriteria()->mergeWith(array(
'condition'=>"idc_id IN ($ids)",
));
原文转自百度空间《Yii CDbCriteria 常用方法》

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

SublimeText3 Linux new version
SublimeText3 Linux latest version

Dreamweaver CS6
Visual web development tools

Dreamweaver Mac version
Visual web development tools

SecLists
SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.

VSCode Windows 64-bit Download
A free and powerful IDE editor launched by Microsoft
