半城柳色半声笛

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半城柳色半声笛 2025-01-11 13:16:08

与其他解决方案不同,当客户有多个订单时,该解决方案不会产生重复的客户编号。

SELECT C.customerNumber 
FROM ClassicModels.Customers C 
WHERE 
EXISTS(
    -- customer has orders
    SELECT * 
    FROM ClassicModels.Orders AS O
    WHERE O.customerNumber = C.customerNumber 
)
AND NOT EXISTS(
    -- customer does not have payments
    SELECT *
    FROM ClassicModels.Payments P
    WHERE P.customerNumber = C.customerNumber
)

Unlike the other solutions, this solution will not produce duplicate customer numbers when customers have more than one order.

SELECT C.customerNumber 
FROM ClassicModels.Customers C 
WHERE 
EXISTS(
    -- customer has orders
    SELECT * 
    FROM ClassicModels.Orders AS O
    WHERE O.customerNumber = C.customerNumber 
)
AND NOT EXISTS(
    -- customer does not have payments
    SELECT *
    FROM ClassicModels.Payments P
    WHERE P.customerNumber = C.customerNumber
)

Mysql查询:查找有订单但没有付款的客户

半城柳色半声笛 2025-01-11 08:38:58

REPLACE函数还可以用于将指定数量的字符替换为空,即

=REPLACE(A1,1,5,"")

REPLACE function can also be used to replace a designated number of characters with nothing, i.e.

=REPLACE(A1,1,5,"")

返回除前 X 个字符之外的所有字符 Excel 2007

半城柳色半声笛 2025-01-11 03:42:44

根据 IE 版本的不同,不透明度没有相同的语法:

-ms-filter: "alpha(opacity=10)"; /* IE 8 */
filter : alpha(opacity=10); /* IE < 8 */
opacity: 0.1; /* IE 9 */

您希望通过设置获得什么:

background:none; 

Depending on IE version, opacity doesn't have the same syntax:

-ms-filter: "alpha(opacity=10)"; /* IE 8 */
filter : alpha(opacity=10); /* IE < 8 */
opacity: 0.1; /* IE 9 */

What did you expect by setting:

background:none; 

Internet Explorer 中的弹出窗口是透明的

半城柳色半声笛 2025-01-11 03:23:12

我想使用 JToken 添加反射的替代方案。您需要检查两者之间的基准差异,看看哪个具有更好的性能。

var location = new Location() { City = "London" };
var locationToken = JToken.FromObject(location);
var locationObject = locationObject.Value<JObject>();
var locationPropertyList = locationObject.Properties()
    .Select(x => new KeyValuePair<string, string>(x.Name, x.Value.ToString()));

请注意,此方法最适合扁平类结构。

I would like to add an alternative to reflection, using JToken. You will need to check the benchmark difference between the two to see which has better performance.

var location = new Location() { City = "London" };
var locationToken = JToken.FromObject(location);
var locationObject = locationObject.Value<JObject>();
var locationPropertyList = locationObject.Properties()
    .Select(x => new KeyValuePair<string, string>(x.Name, x.Value.ToString()));

Note this method is best for a flat class structure.

如何将类转换为 Dictionary

半城柳色半声笛 2025-01-11 02:27:44

您的问题可能来自 android:style/Theme.Dialog 因为它可能会根据 android 版本而演变。

解决方案:

  1. 完全定义您自己的样式,而不参考 android:style/Theme.Dialog
  2. 引用 android:style/Theme.Dialog 但在您的代码中添加边距/填充布局定义风格项目

your problem might come from android:style/Theme.Dialog since it can evolve depending on android version.

solutions :

  1. Define fully your own style with no reference to android:style/Theme.Dialog
  2. refers to android:style/Theme.Dialog but add margins/paddings layout definitions in your style items

Android 4.0 自定义对话框 - 可能存在 Bug?

半城柳色半声笛 2025-01-10 23:05:12

您正在循环遍历所有单词,并且只返回最后一个单词的结果。

从您的代码中并不清楚它应该如何工作,因为您返回“a”、“exists”或错误消息。

如果这段代码找到一个“不允许的”单词(这显然对你来说并不重要)或者它抛出一个错误(也不清楚为什么它会抛出一个错误),那么它就会跳出循环(和函数) :

For Each word In words

  'call class file
  Dim oscar As New webfunctions

  Try

  'call function to check whether this word exists in database or not, 
  rer = oscar.chkword(word)
  If rer > 0 Then
    returnValue = "a"
  Else
    return "exists"
  End If

  Catch ex As Exception
    return ex.Message
  End Try
Next
Return returnValue

根据您的评论和更新的代码,我可能会重新工作您的函数以返回每个单词的结果字典,因为这似乎就是您正在寻找的:

<System.Web.Services.WebMethod()> _
Public Function CheckWords(ByVal sentence As String) As Dictionary(Of String, String)
  Dim wordDictionary As New Dictionary(Of String, String)

  For Each word As String In sentence.Split(" ")
    Dim wordResult As String
    Try
      Dim oscar As New webfunctions
      If oscar.chkword(word) > 0 Then
        wordResult = "a"
      Else
        wordResult = "exists"
      End If
    Catch ex As Exception
      wordResult = ex.Message
    End Try

    If Not wordDictionary.ContainsKey(word) Then
      wordDictionary.Add(word, wordResult)
    End If
  Next

  Return wordDictionary
End Function

You are looping through all of your words and only returning the results from the last word.

It's not very clear from your code how it's suppose to work because you are returning "a", "exists" or an error message.

This code breaks out of the loop (and function) if it finds a "disallowed" word (which one apparently doesn't matter to you) or if it throws an error (which also isn't clear why it would throw an error):

For Each word In words

  'call class file
  Dim oscar As New webfunctions

  Try

  'call function to check whether this word exists in database or not, 
  rer = oscar.chkword(word)
  If rer > 0 Then
    returnValue = "a"
  Else
    return "exists"
  End If

  Catch ex As Exception
    return ex.Message
  End Try
Next
Return returnValue

Per your comment and your updated code, I would probably re-work your function to return a dictionary of results for each word, since that seems to be what you are looking for:

<System.Web.Services.WebMethod()> _
Public Function CheckWords(ByVal sentence As String) As Dictionary(Of String, String)
  Dim wordDictionary As New Dictionary(Of String, String)

  For Each word As String In sentence.Split(" ")
    Dim wordResult As String
    Try
      Dim oscar As New webfunctions
      If oscar.chkword(word) > 0 Then
        wordResult = "a"
      Else
        wordResult = "exists"
      End If
    Catch ex As Exception
      wordResult = ex.Message
    End Try

    If Not wordDictionary.ContainsKey(word) Then
      wordDictionary.Add(word, wordResult)
    End If
  Next

  Return wordDictionary
End Function

从字符串中提取单词并验证它们是否存在于 VB 数据库中

半城柳色半声笛 2025-01-10 22:21:01

使用 ImageButton 而不是 Button 或将 android:src="@drawable/pause" 更改为 android:background="@可绘制/暂停”

Either use an ImageButton instead of Button or change android:src="@drawable/pause" to android:background="@drawable/pause"

Android按钮:显示黑色方块而不是img?

半城柳色半声笛 2025-01-10 22:11:03

为什么需要输入它们。只需引用它们,因为它们是在全局范围内声明的。

function doYouLikeCake()
{
    return YES;
}

Why do you need to input them. Just reference them since they are being declared in the global scope.

function doYouLikeCake()
{
    return YES;
}

JavaScript 中常量作为函数的输入?

半城柳色半声笛 2025-01-10 21:53:23

检查主 XAML 文件中的 IsEnabled="True" 属性,如果将其设置为 false,则控件将不可编辑。

Check for IsEnabled="True" property in your main XAML file, if it is set to false then controls will not be editable.

Xaml 文本框没有行为

半城柳色半声笛 2025-01-10 01:08:43

在项目存储库配置中设置

git config --add merge.ff false

Set it in project repository configuration

git config --add merge.ff false

Aptana:没有快进的 Git 合并

半城柳色半声笛 2025-01-10 00:13:12

算法:

$in = fopen( 'file1.csv', 'r');
$out = fopen( 'file2.csv', 'w'); 
// Check whether they opened

while( $row = fgetcsv( $in, 10000)){
  if( ... your condition ...){
    continue;
  }

  fputcsv( $out, $row);
}

fclose( $in); fclose( $out);

Algorithm:

$in = fopen( 'file1.csv', 'r');
$out = fopen( 'file2.csv', 'w'); 
// Check whether they opened

while( $row = fgetcsv( $in, 10000)){
  if( ... your condition ...){
    continue;
  }

  fputcsv( $out, $row);
}

fclose( $in); fclose( $out);

使用 CSV 删除一行?

半城柳色半声笛 2025-01-09 20:02:25

标签只回复 id,但不回复 id 开始发送时的时间戳,对吗?您需要时间来测量速度。随着时间和知道哪个天线收到标签的答案以及阅读器开始请求标签的时间,您可以对距离和可能的行进方向做出粗略的假设。
为了真正跟踪运动,您需要了解建筑环境,并且需要有多个阅读器。
RFID 标签不是 GPS 应答器

The tag only reply with an id, but not with an timestamp when the id started sending, right?. You need the time to measure speed. With the time and knowing which antenna received the answer of the tag and the time when the reader started asking for tags you could make a rough assumption about distance and maybe direction of travel.
For really tracking movement you need to know the building environment and needs to have more than just one reader.
A RFID tag is not a GPS transponder

有没有办法使用 RFID 读取器跟踪 RFID?

半城柳色半声笛 2025-01-09 07:46:18

MySQL MATCH 正是这样做的。查看文档,也有示例。

MySQL MATCH does this exactly. Check the documentation, there are also examples.

MYSQL自然语言搜索,可以用来对表进行搜索吗?

半城柳色半声笛 2025-01-08 13:52:29

 <uses-sdk android:minSdkVersion="8" android:maxSdkVersion="11"/>
 <supports-screens android:anyDensity="true" />

在 Manifest.xml 标签之前尝试。

我希望它可以帮助你。

please try

 <uses-sdk android:minSdkVersion="8" android:maxSdkVersion="11"/>
 <supports-screens android:anyDensity="true" />

in Manifest.xml before tag.

I hope it may be help you.

适用于平板电脑的 Android 应用程序

半城柳色半声笛 2025-01-08 12:40:44

如果你根本不想展示它
你可以使用下面的CSS代码

.fb_edge_widget_with_comment{
  position: absolute;
}

.fb_edge_widget_with_comment span.fb_edge_comment_widget iframe.fb_ltr {
  display: none !important;
}

希望它有帮助:)

If you don't want to show it at all
you can use the CSS code below

.fb_edge_widget_with_comment{
  position: absolute;
}

.fb_edge_widget_with_comment span.fb_edge_comment_widget iframe.fb_ltr {
  display: none !important;
}

Hope it helps :)

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