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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">
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<link rel="icon" href="case_when.ico">
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</header>
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<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">输入相应的字符，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-secondary btn-sm" >数值类</button>
<a href="case_when2.html" style='text-decoration:none;' ><button type="button" class="btn btn-primary 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-4 mb-2">
<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-4 mb-2">
<label for="outputName">输出字段名</label>
<input type="text" class="form-control rounded-0" id="outputName" placeholder="" value="">
</div>
<div class="col-md-4 mb-2">
<label for="inputName">输入是否为数值型</label>
<div>
<div class="form-check form-check-inline">
<input class="form-check-input rounded-0" 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 rounded-0" type="radio" name="infinite" id="infinite2" value=2>
<label class="form-check-label" for="infinite2">否</label>
</div>
</div>
</div>
<hr class="mb-3">
<div class="col-md-12 mb-3">
<textarea class="form-control rounded-0" id="text_input" rows="18" placeholder="请按照如下格式粘贴（左边是原值，右边是预期值，用tab分隔，可直接用excel编辑两列复制过来）： 0	文本0 1	文本1 2	文本2 3	文本3"></textarea>
</div>
</div>
<hr class="mb-3">
<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" placeholder="预期效果： case when column = 0 then '文本0' 
when column = 1 then '文本1'
when column = 2 then '文本2'
when column = 3 then '文本3' end as output"></textarea>
</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/main.js"></script>
<script>
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 inputArea = document.getElementById('text_input');
var inputName = document.getElementById("inputName").value;
var outputName = document.getElementById("outputName").value;
var output = ''
var if_num = getRadioValue("infinite") * 1
var case_list = inputArea.value.split('\n');
var total_cnt = case_list.length;
for (var i = 0; i < total_cnt; i++){
var a = case_list[i].split("\t")[0];
var b = case_list[i].split("\t")[1];
if(if_num == 1){
output = output + 'WHEN ' + inputName + ' = ' + a + ' THEN ' + '"' + b + '"' + "\n";
}else{
output = output + 'WHEN ' + inputName + ' = ' + '"'+ a + '"' + ' THEN ' + '"' + b + '"' + "\n";
}
}
console.log(typeof(inputArea.value));
var tObj = document.getElementById('textarea');
tObj.value = 'CASE ' + output + 'END AS ' + outputName;
}
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$('[data-toggle="tooltip"]').tooltip()
})
</script>
</body>
</html>