Question

例如，我的设备ID为“ 001”，每个设备ID都有一列称为total，我只想检索每个设备ID的SUM total。请怎么做？

<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet"/>
<link href="https://cdn.jsdelivr.net/gh/nespero/fluent-kit@1.3.0/css/fluent-kit.min.css" rel="stylesheet"/>
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.0/umd/popper.min.js"></script>
<script src="https://cdn.jsdelivr.net/gh/nespero/fluent-kit@1.2.0/js/fluent-kit.min.js"></script>

<div class="row">

  <div class="col-xl-4 col-lg-6 col-md-8 py-2">
    <div class="mt-5 mt-md-0 bg-dimgrey text-white shadow-lg">
      <h5 class="py-3 text-center bold bg-darkdimgrey">
        Sign <span class="text-info">in</span>
      </h5>
      <div class="px-3"><hr class="my-0"></div>
      <div class="px-3 pt-3">
        <fieldset>
          <label for="login2-email">Email</label>
          <input id="login2-email" type="email" name="email" placeholder="me@example.com">
        </fieldset>
        <fieldset>
          <label for="login2-password">Password</label>
          <input id="login2-password" type="password" name="password" placeholder="******************" class="input-with-button"/>
          <button class="mi mi-PasswordKeyHide text-info" data-toggle-password-visibility></button>
        </fieldset>
        <div class="d-flex my-2">
          <fieldset>
            <input type="checkbox" id="login2-remember-me" />
            <label for="login2-remember-me">Remember me</label>
          </fieldset>
          <small class="ml-auto"><a class="text-info bold" href="#">Forgot password?</a></small>
        </div>
        <div class="d-flex pb-3 mt-2">
          <small class="d-inline-block py-1">
            Not a member? <a class="text-info bold" href="#">Register</a>
          </small>
          <button class="ml-auto mt-0 btn btn-md btn-rounded btn-info cta">
            Sign in
            <i class="mi mi-ChevronRight"></i>
          </button>
        </div>
        <div class="pb-3 text-center">
          <small class="d-block mb-3">or sign in with</small>
          <div class="pb-3 d-flex justify-content-around">
            <a class="text-white" href="#"><i class="mi mi-facebook"></i></a>
            <a class="text-white" href="#"><i class="mi mi-twitter"></i></a>
            <a class="text-white" href="#"><i class="mi mi-google"></i></a>
            <a class="text-white" href="#"><i class="mi mi-linkedin"></i></a>
          </div>
        </div>
      </div>
    </div>
  </div>
  
</div>

Answer 1

尝试一下，但是请阅读一些SQL教程，这些是基础知识：

SELECT SUM(TicketSales.TotalPrice) AS expr1
FROM dbo.TicketSales
GROUP BY TicketSales.DeviceID

SQL Server 2012选择多个ID的总和

1 个答案: