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case_when.html
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case_when.html
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<!DOCTYPE html>
<html lang="zh-cn">
<head>
<title>快速 CASE WHEN - 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">
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<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>
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<li><a class="nav-link" href="index.html">首页</a></li>
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<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>
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</header>
<div class="site-section bg-light" id="contact-section" style="padding-top:2em">
<div class="container">
<div class="py-5 text-center" style="margin-top: 50px;">
<!-- <h3>CASE WHEN 自动生成小工具</h3> -->
<p class="lead">输入相应的数值,自动生成 <b>CASE WHEN</b> 的 <b>SQL</b> 语句</p>
<a href="case_when.html" style='text-decoration:none;' ><button type="button" class="btn btn-primary btn-sm" >数值类</button>
<a href="case_when2.html" style='text-decoration:none;' ><button type="button" class="btn btn-secondary btn-sm">文本类</button></a>
</div>
<div class="row">
<div class="col-md-6 order-md-1">
<form class="needs-validation" novalidate="">
<div class="row">
<div class="col-md-6 mb-3">
<label for="inputName">输入字段名</label>
<input type="text" class="form-control rounded-0" id="inputName" placeholder="" value="">
</div>
<div class="col-md-6 mb-3">
<label for="outputName">输出字段名</label>
<input type="text" class="form-control rounded-0" id="outputName" placeholder="" value="">
</div>
</div>
<div class="mb-3">
<label for="startnum">起始数值</label>
<input type="text" class="form-control rounded-0" id="startnum" placeholder="请输入一个数值,默认值为0" value="">
</div>
<div class="mb-3">
<label for="endnum">结束数值</label>
<input type="text" class="form-control rounded-0" id="endnum" placeholder="请输入一个数值,默认值为0">
</div>
<div class="mb-3">
<label for="interval">步长</label>
<input type="text" class="form-control rounded-0 " id="interval" placeholder="请输入一个数值,默认值为0">
</div>
<hr class="mb-3">
<div class="mb-3">
<label for="irregular">手动输入不规则间隔</label>
<input type="text" class="form-control rounded-0" id="irregular" placeholder="请用空格分隔数字,例如:20 30 35">
</div>
<hr class="mb-3">
<div class="row">
<div class="col-md-6 mb-3">
<label for="inputName">开闭选择</label>
<div>
<div class="form-check form-check-inline">
<input class="form-check-input" type="radio" name="leftclose" id="leftclose1" value=1 checked="checked">
<label class="form-check-label" for="leftclose1">左闭右开</label>
</div>
<div class="form-check form-check-inline">
<input class="form-check-input" type="radio" name="leftclose" id="leftclose2" value=2>
<label class="form-check-label" for="leftclose2">左开右闭</label>
</div>
</div>
</div>
<div class="col-md-6 mb-3">
<label for="inputName">是否到无穷</label>
<div>
<div class="form-check form-check-inline">
<input class="form-check-input" type="radio" name="infinite" id="infinite1" value=1 checked="checked">
<label class="form-check-label" for="infinite1">是</label>
</div>
<div class="form-check form-check-inline">
<input class="form-check-input" type="radio" name="infinite" id="infinite2" value=2>
<label class="form-check-label" for="infinite2">否</label>
</div>
</div>
</div>
</div>
<hr class="mb-4">
<button class="btn btn-primary btn-lg btn-block" id="button1" type="submit" onclick="generate();return false;">一键生成</button>
<br>
</form>
</div>
<div class="col-md-6 order-md-2 mb-4">
<textarea class="form-control rounded-0" id="textarea" rows="24"></textarea>
</div>
</div>
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<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">
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<script src="js/jquery-3.3.1.min.js"></script>
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<script>
function accDiv(arg1,arg2){
var t1=0,t2=0,r1,r2;
try{t1=arg1.toString().split(".")[1].length}catch(e){}
try{t2=arg2.toString().split(".")[1].length}catch(e){}
with(Math){
r1=Number(arg1.toString().replace(".",""))
r2=Number(arg2.toString().replace(".",""))
return accMul((r1/r2),pow(10,t2-t1));
}
}
//乘法
function accMul(arg1,arg2)
{
var m=0,s1=arg1.toString(),s2=arg2.toString();
try{m+=s1.split(".")[1].length}catch(e){}
try{m+=s2.split(".")[1].length}catch(e){}
return Number(s1.replace(".",""))*Number(s2.replace(".",""))/Math.pow(10,m)
}
//加法
function accAdd(arg1,arg2){
var r1,r2,m;
try{r1=arg1.toString().split(".")[1].length}catch(e){r1=0}
try{r2=arg2.toString().split(".")[1].length}catch(e){r2=0}
m=Math.pow(10,Math.max(r1,r2))
return (arg1*m+arg2*m)/m
}
//减法
function Subtr(arg1,arg2){
var r1,r2,m,n;
try{r1=arg1.toString().split(".")[1].length}catch(e){r1=0}
try{r2=arg2.toString().split(".")[1].length}catch(e){r2=0}
m=Math.pow(10,Math.max(r1,r2));
n=(r1>=r2)?r1:r2;
return ((arg1*m-arg2*m)/m).toFixed(n);
}
function generate() {
function getRadioValue(radioName)
{
var radios = document.getElementsByName(radioName);
if(!radios)
return '';
for (var i = 0; i < radios.length; i++)
{
if (radios[i].checked)
return radios[i].value;
}
return '';
}
var inputName = document.getElementById("inputName").value;
var outputName = document.getElementById("outputName").value;
var startnum = document.getElementById("startnum").value * 1;
var endnum = document.getElementById("endnum").value * 1 ;
var interval = document.getElementById("interval").value * 1;
var irregular = document.getElementById("irregular").value;
var leftclose = getRadioValue("leftclose") * 1;
var infinite = getRadioValue("infinite") * 1;
function regular_case(column_name,start,end,interval,left_close,if_end,new_name)
{
var text_total = 'CASE '
var cnt = (end-start)/interval;
if (left_close == 1){
var left_char = '>=';
var left_char2 = '[';
var right_char = '<';
var right_char2 = ')';
}else{
var left_char = '>';
var left_char2 = '(';
var right_char = '<=';
var right_char2 = ']';
}
for (var i = 0; i < cnt; i++)
{
var left_num = accAdd(start,accMul(interval,i));
var right_num = accAdd(left_num,interval);
var oneline = `WHEN ${column_name} ${left_char} ${left_num} AND ${column_name} ${right_char} ${right_num} THEN '${left_char2}${left_num}, ${right_num}${right_char2}'\n`;
text_total += oneline;
}
if (if_end == 1){
text_total += `ELSE '${left_char2}${right_num}, +∞${right_char2}' END AS ${new_name}`;
}else{
text_total += `ELSE NULL END AS ${new_name}`;
}
return text_total;
}
function irregular_case(column_name,num_list,left_close,if_end,new_name)
{
var text_total = 'CASE '
if (left_close == 1){
var left_char = '>=';
var left_char2 = '[';
var right_char = '<';
var right_char2 = ')';
}else{
var left_char = '>';
var left_char2 = '(';
var right_char = '<=';
var right_char2 = ']';
}
for (var i = 0; i < num_list.length-1; i++)
{
var left_num = num_list[i]*1;
var right_num = num_list[i+1]*1;
var oneline = `WHEN ${column_name} ${left_char} ${left_num} AND ${column_name} ${right_char} ${right_num} THEN '${left_char2}${left_num}, ${right_num}${right_char2}'\n`;
text_total += oneline;
}
if (if_end == 1){
text_total += `ELSE '${left_char2}${right_num}, +∞${right_char2}' END AS ${new_name}`;
}else{
text_total += `ELSE NULL END AS ${new_name}`;
}
if(text_total.indexOf("NaN") != -1){
text_total = '输入有误,请检查!'
}
return text_total;
}
function trim(str){ //删除左右两端的空格
return str.replace(/(^\s*)|(\s*$)/g, "");
}
var tObj = document.getElementById('textarea');
//
var array_list = trim(irregular).replace(/\s+/g, ' ').split(" ")
if(array_list.length >=2){
tObj.value = irregular_case(inputName,array_list,leftclose,infinite,outputName);
}else{
if(interval > 0 &&parseFloat(startnum).toString() != 'NaN' && parseFloat(endnum).toString() != 'NaN' && startnum < endnum ){
tObj.value = regular_case(inputName,startnum,endnum,interval,leftclose,infinite,outputName);
}
else{
tObj.value = '输入有误,请检查!'
}
}
}
$(function () {
$('[data-toggle="tooltip"]').tooltip()
})
</script>
</body>
</html>