SELECT * FROM user WHERE FIND_IN_SET(1, type); DB::table('user') ->select(['*']) ->whereRaw('FIND_IN_SET(?, type)', [$type]) ->get();
mysql字符串函数 find_in_set(str1,str2)函数是返回str2中str1所在的位置索引,str2必须以","分割开。...”分隔 如 (1,2,6,8) 查询字段(strlist)中包含(str)的结果,返回结果为null或记录假如字符串str在由N个子链组成的字符串列表strlist 中,则返回值的范围在 1 到 N...注意:mysql字符串函数 find...
“Laravel is a breath of fresh air in the PHP ecosystem, with a brilliant community around it.” Erika HeidiCreator, Minicli “The framework, the ecosystem and the community - it's the perfect package.” Zuzana KunckovaFounder, Larabelles ...
->orderByRaw(DB::raw("FIND_IN_SET(id, '" . implode(',', $customer_ids) . "'" . ')'));//按照指定顺序排序 1. 2. 3. 4. 5. 6. 这里$customer_ids是一个一维数组,所以在里面要转化一下 然后在根据相应的值来排序 1. 非学,无以致疑;非问,无以广识...
FIND_IN_SET 不走索引,大家有什么好的解决方案吗?建立一个一对多的表怎么样?mysql 索引 举报 勇敢的心 见习助教 850 声望 暂无个人描述~ 0 人点赞 《L03 构架 API 服务器》 你将学到如 RESTFul 设计风格、PostMan 的使用、OAuth 流程,JWT 概念及使用 和 API 开发相关的进阶知识。 《G01 Go 实战入门》...
对于我们的 QuickStart 应用程序,我们需要一个数据库。默认情况下,Laravel 支持 MySQL、MSSQL、PostgreSQL 和 SQLite。 第2 步 - 下载 Laravel 下载Laravel 的最简单方法是从laravel.com/download下载压缩包。 或者,您可以通过以下命令从GitHub.com克隆其git存储库来下载 Laravel。
首先创建测试用的 users 表,并且添加虚拟字段 name、address、level: 代码语言:javascript 代码运行次数:0 AI代码解释 mysql>CREATETABLEusers(idINTUNSIGNEDNOTNULLAUTO_INCREMENT,created_at timestampnull,updated_at timestampnull,dataJSONNOTNULL,PRIMARYKEY(id));mysql>ALTERTABLEusers add nameVARCHAR(100)AS(JSON...
If you choose to switch to this character set manually and are running a version of MySQL older than the 5.7.7 release, you may need to manually configure the default string length generated by migrations. You may configure this by calling the Schema::defaultStringLength method within your ...
The nested set model is to number the nodes according to a tree traversal, which visits each node twice, assigning numbers in the order of visiting, and at both visits. This leaves two numbers for each node, which are stored as two attributes. Querying becomes inexpensive: hierarchy ...
6.Push data in controllernamespace App\Http\Controllers; class TestController extends Controller { public function push() { $fd = 1; // Find fd by userId from a map [userId=>fd]. /**@var \Swoole\WebSocket\Server $swoole */ $swoole = app('swoole'); $success = $swoole->push($...