从下拉框中查询Mysql筛选器

早上好，我在下面的mysql查询中显示了在2012年1月和2013年1月合并的年份变化之前的销售情况

为了尝试解决问题，我放置了一个下拉表单框（id=YearSelect），其值为2012和2013，是否可以使用所选值控制此查询？如果最终用户选择2012，那么该值将作为where子句的一种类型发送到列Year

<form id="yearselect">
<select name="year">
  <option value="">Select year </option>
  <option value="2012">2012</option>
  <option value="2013">2013</option>
</select>
</form>

---

感谢您的建议。

如何更改此

位置

：

Where
  b.StatusSubmittedDate > '2012 - 01 - 01'

致：

---

这应该足够了…

考虑到PHP标记，我假设您正在PHP页面上显示结果。您可以使用以下代码来执行您想要的操作

<form id="yearselect" method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>" >
<select name='selyear' onchange='document.getElementById("yearselect").submit()'>
  <option value=''> - Select year </option>
  <option value='2012'>2012</option>
  <option value='2013'>2013</option>
</select>
</form>

<?
$y = date("Y");
if (isset($_POST['selyear']))
{
  if (checkdate(1, 1, $_POST['selyear']) && $_POST['selyear']>=2012)
    $y = $_POST['selyear'];
}

$query = 'Select
  *,
  If(q.Adviser Is Null, 1, 0) As remove
From
  (Select
      a.ContactFullName As Adviser,  
      YEAR(b.CaseDate) As Year,
      Sum(If(Month(b.StatusSubmittedDate) = 1, b.CaseCommission, 0)) As Jan,
      Sum(If(Month(b.StatusSubmittedDate) = 2, b.CaseCommission, 0)) As Feb,
      Sum(If(Month(b.StatusSubmittedDate) = 3, b.CaseCommission, 0)) As Mar,
      Sum(If(Month(b.StatusSubmittedDate) = 4, b.CaseCommission, 0)) As Apr,
      Sum(If(Month(b.StatusSubmittedDate) = 5, b.CaseCommission, 0)) As May,
      Sum(If(Month(b.StatusSubmittedDate) = 6, b.CaseCommission, 0)) As Jun,
      Sum(If(Month(b.StatusSubmittedDate) = 7, b.CaseCommission, 0)) As Jul,
      Sum(If(Month(b.StatusSubmittedDate) = 8, b.CaseCommission, 0)) As Aug,
      Sum(If(Month(b.StatusSubmittedDate) = 9, b.CaseCommission, 0)) As Sep,
      Sum(If(Month(b.StatusSubmittedDate) = 10, b.CaseCommission, 0)) As Oct,
      Sum(If(Month(b.StatusSubmittedDate) = 11, b.CaseCommission, 0)) As Nov,
      Sum(If(Month(b.StatusSubmittedDate) = 12, b.CaseCommission, 0)) As Decb,
      Sum(b.CaseCommission) As Total
    From
      tblcontacts a Inner Join
      tblcases b On a.ContactID = b.ContactAssignedTo
    Where
      b.StatusSubmittedDate > \''.$y.' - 01 - 01\'
      AND b.StatusSubmittedDate < \''.$y.' - 12 - 31\'
    Group By
      a.ContactFullName WITH ROLLUP
    Having
      Sum(b.CaseCommission) > 0.01) q
Order By
  If(q.Adviser Is Null, 1, 0), q.Total Desc'


  //output results
?>

---

那不是PHP。为什么这个问题被标记为PHP？谢谢你的建议，不过我可能实现错了。更新后的代码现在位于原始帖子中，但返回“注意：未定义变量：C:\wamp\sales.php中的SelectYear，第41行”。猜测它不是where语句中需要的表单字段的id？@gary Nope，它不是表单的id，您必须从组合框中提供正确的值，无论是从
$\u POST
还是
$\u GET
数组。让我们假设组合框字段的名称是
year
（因此有
…
），并且您正在发布表单，然后
其中的
将是：
其中year（b.StatusSubmittedDate）=“（int）$\u POST['year']”。
也尝试了该代码并反映在我的原始帖子中，但我也收到了“通知：未定义的索引：year”。无法解决此问题，在我的查询中，“YEAR（b.StatusSubmittedDate）”的输出总是2012或2013年，这是正确的，因此我猜测它是无法定位的select值？@gary发布select存在的表单代码，以及接收提交值的PHP代码…Hi@shadyyx，感谢再次管理解决此问题，当页面第一次加载时，过滤器没有值，因此它会出错。当我选择年份时，它会正确过滤查询，直到下一页加载。不知何故，我们需要找到如何使2013年成为页面加载的默认年份。感谢您的输入，Hugo非常感谢。此代码还返回一个未定义的变量：Year，页面错误为“\''..'-01-01\”和b.StatusSubmittedDate<\'''-12-31\”。我的错误是，我在发布期间中途从
$Year
切换到
$y
，忘记了更新一些。我更新了它。现在应该工作了。没问题，雨果，我也没看见！已经进行了更改，但仍然看到一个错误，例如“您的SQL语法有错误；请检查与您的MySQL服务器版本对应的手册，以了解在'\'.2013.'-01-01\'和年份（b.StatusSubmittedDate）<\'.2013.'-12-'附近使用的正确语法，第1行”然后您没有使用$query来运行代码，而是复制了查询并将其放在双引号之间，而不是我使用的单引号之间。您可以将其更改为单引号，也可以将行更改为
b.StatusSubmittedDate>“$y-01-01”和b.StatusSubmittedDate<'$y-12-31'
谢谢Hugo，在看到您的帖子之前，我已经实现了另一个解决方案，现在可以使用了，我可以说谢谢您在这方面的帮助。
Where
  YEAR(b.StatusSubmittedDate) = ".(int)$YEAR_VALUE_FROM_DROPDOWN."

<form id="yearselect" method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>" >
<select name='selyear' onchange='document.getElementById("yearselect").submit()'>
  <option value=''> - Select year </option>
  <option value='2012'>2012</option>
  <option value='2013'>2013</option>
</select>
</form>

<?
$y = date("Y");
if (isset($_POST['selyear']))
{
  if (checkdate(1, 1, $_POST['selyear']) && $_POST['selyear']>=2012)
    $y = $_POST['selyear'];
}

$query = 'Select
  *,
  If(q.Adviser Is Null, 1, 0) As remove
From
  (Select
      a.ContactFullName As Adviser,  
      YEAR(b.CaseDate) As Year,
      Sum(If(Month(b.StatusSubmittedDate) = 1, b.CaseCommission, 0)) As Jan,
      Sum(If(Month(b.StatusSubmittedDate) = 2, b.CaseCommission, 0)) As Feb,
      Sum(If(Month(b.StatusSubmittedDate) = 3, b.CaseCommission, 0)) As Mar,
      Sum(If(Month(b.StatusSubmittedDate) = 4, b.CaseCommission, 0)) As Apr,
      Sum(If(Month(b.StatusSubmittedDate) = 5, b.CaseCommission, 0)) As May,
      Sum(If(Month(b.StatusSubmittedDate) = 6, b.CaseCommission, 0)) As Jun,
      Sum(If(Month(b.StatusSubmittedDate) = 7, b.CaseCommission, 0)) As Jul,
      Sum(If(Month(b.StatusSubmittedDate) = 8, b.CaseCommission, 0)) As Aug,
      Sum(If(Month(b.StatusSubmittedDate) = 9, b.CaseCommission, 0)) As Sep,
      Sum(If(Month(b.StatusSubmittedDate) = 10, b.CaseCommission, 0)) As Oct,
      Sum(If(Month(b.StatusSubmittedDate) = 11, b.CaseCommission, 0)) As Nov,
      Sum(If(Month(b.StatusSubmittedDate) = 12, b.CaseCommission, 0)) As Decb,
      Sum(b.CaseCommission) As Total
    From
      tblcontacts a Inner Join
      tblcases b On a.ContactID = b.ContactAssignedTo
    Where
      b.StatusSubmittedDate > \''.$y.' - 01 - 01\'
      AND b.StatusSubmittedDate < \''.$y.' - 12 - 31\'
    Group By
      a.ContactFullName WITH ROLLUP
    Having
      Sum(b.CaseCommission) > 0.01) q
Order By
  If(q.Adviser Is Null, 1, 0), q.Total Desc'


  //output results
?>