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<!DOCTYPE html>
<html lang="zh-cn">
<head>
<title>实验室 - Tools for SQL</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link href="https://fonts.googleapis.com/css?family=Montserrat:300,400,700" rel="stylesheet">
<link rel="stylesheet" href="fonts/icomoon/style.css">
<link rel="stylesheet" href="css/bootstrap.min.css">
<link rel="stylesheet" href="css/jquery-ui.css">
<link rel="stylesheet" href="css/owl.carousel.min.css">
<link rel="stylesheet" href="css/owl.theme.default.min.css">
<link rel="stylesheet" href="css/owl.theme.default.min.css">
<link rel="stylesheet" href="css/jquery.fancybox.min.css">
<link rel="stylesheet" href="css/bootstrap-datepicker.css">
<link rel="stylesheet" href="fonts/flaticon/font/flaticon.css">
<link rel="stylesheet" href="css/aos.css">
<link rel="stylesheet" href="css/style.css">
<link rel="icon" href="case_when.ico">
</head>
<body data-spy="scroll" data-target=".site-navbar-target" data-offset="300">
<div class="site-wrap" id="home-section">
<div class="site-mobile-menu site-navbar-target">
<div class="site-mobile-menu-header">
<div class="site-mobile-menu-close mt-3">
<span class="icon-close2 js-menu-toggle"></span>
</div>
</div>
<div class="site-mobile-menu-body"></div>
</div>
<div class="container d-none d-lg-block">
<div class="row">
<div class="col-12 text-center mb-4 mt-5">
<h1 class="mb-0 site-logo"><a href="index.html" class="text-black h2 mb-0">Tools for SQL<span class="text-primary">.</span> </a></h1>
</div>
</div>
</div>
<header class="site-navbar py-md-4 js-sticky-header site-navbar-target" role="banner">
<div class="container">
<div class="row align-items-center">
<div class="col-6 col-md-6 col-xl-2 d-block d-lg-none">
<h1 class="mb-0 site-logo"><a href="index.html" class="text-black h2 mb-0">Tools for SQL<span class="text-primary">.</span> </a></h1>
</div>
<div class="col-12 col-md-12 main-menu">
<nav class="site-navigation position-relative text-right" role="navigation">
<ul class="site-menu main-menu js-clone-nav mr-auto d-none d-lg-block">
<li><a class="nav-link" href="index.html">首页</a></li>
<li><a class="nav-link" href="case_when.html" data-toggle="tooltip" title="不想写case when的时候">快速 CASE WHEN</a></li>
<li><a class="nav-link" href="avoid_lose.html" data-toggle="tooltip" title="一次使用N张表" >疯狂JOIN</a></li>
<li><a class="nav-link" href="lab_date.html" data-toggle="tooltip" title="时间生成器" >最近N天</a></li>
<li><a class="nav-link" href="lab_join.html" data-toggle="tooltip" title="多表相似关联" >多表相似关联</a></li>
<li><a class="nav-link" href="beauty_sql.html" data-toggle="tooltip" title="SQL美化">SQL美化</a></li>
<li><a class="nav-link" href="lab.html" data-toggle="tooltip" title="sql实验室" style="color:#00d2b5">实验室</a></li>
<li><a class="nav-link" href="https://regex101.com/" data-toggle="tooltip" title="正则表达实验室" target="_blank">REGEX101</a></li>
</ul>
</nav>
</div>
<div class="col-6 col-md-6 d-inline-block d-lg-none ml-md-0" ><a href="#" class="site-menu-toggle js-menu-toggle text-black float-right"><span class="icon-menu h3"></span></a></div>
</div>
</div>
</header>
<div class="site-section" id="blog-section">
<div class="container">
<div class="py-5 text-center">
<p class="lead">尝试一些小工具让你更快地书写SQL</p>
</div>
<div class="row">
<div class="col-md-12 order-md-1">
<form class="needs-validation" novalidate="">
<div class="row">
<div class="col-md-3 mb-2">
<a class="nav-link p-2 text-dark" href="lab_date.html" target="_blank"><p>A. 日期生成器</p></a>
</div>
<div class="col-md-9 mb-2">
<p class="nav-link p-2 text-dark" >自动生成类似between date_add('2019-02-11',-29) and '2019-02-11'的语句!</p>
</div>
<div class="col-md-3 mb-2">
<a class="nav-link p-2 text-dark" href="lab_loop.html" target="_blank"><p>B. 循环字段生成器</p></a>
</div>
<div class="col-md-9 mb-2">
<p class="nav-link p-2 text-dark" >适用于当出现n个字段,需要写n个例如sum([字段名])语句的情况!</p>
</div>
<div class="col-md-3 mb-2">
<a class="nav-link p-2 text-dark" href="lab_join.html" target="_blank"><p>C. 多表连接生成器</p></a>
</div>
<div class="col-md-9 mb-2">
<p class="nav-link p-2 text-dark" >适用于要用类似的字段关联n张表的情况!</p>
</div>
<div class="col-md-3 mb-2">
<a class="nav-link p-2 text-dark" href="grouping_sets.html" target="_blank"><p>D. GROUPING SETS生成器</p></a>
</div>
<div class="col-md-9 mb-2">
<p class="nav-link p-2 text-dark" >适用快速多种筛选!</p>
</div>
</div>
<hr class="mb-3">
</form>
</div>
</div>
</div>
</div>
<div class="footer py-5 border-top text-center">
<div class="container">
<div class="row">
<div class="col-md-12">
<p class="mb-0">
<p class="mb-1">© 2018-2019 Clark Yu · <span><a href="update_log.html" data-toggle="tooltip" title="又有新的更新啦!" target="_blank" style='text-decoration:none;'>更新日志</a></span> · <span><a href="https://zhuanlan.zhihu.com/p/44502560" data-toggle="tooltip" title="提个意见!" target="_blank" style='text-decoration:none;'>给我留言</a></span> · <span id="busuanzi_container_site_pv">
本站总访问量<span id="busuanzi_value_site_pv"></span>次
</p>
</div>
<div class="col-md-12">
<img src="images/wechat.png" alt="Image" class = "wechat_img">
<p class="mb-1"><span style="color: #00d2b5;">微信</span>打赏,手有余香</p>
</div>
</div>
</div>
</div>
</div> <!-- .site-wrap -->
<script src="js/jquery-3.3.1.min.js"></script>
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