Question

我在mysql表中有一个日期和状态列。目前的帖子状态是=已发送/已接收。我只想在15天后自动更改状态=中止。任何帮助将受到高度赞赏。

查询：

 if (txtrecdate.Text == "" && ddlstatus.SelectedItem.Text != "Completed")
     {
         queryStr = "update barter_proposals set website_a=?web_a,email_id=?email,email_id2=?email2,email_id3=?email3,contact_name=?cname,proposal_status=?status,reason=?rsn," +
              "comment1=?com1 ,agreement=?agreement,agrmt_filename=?agrmt_filename,comment2=?com2,comment3=?com3,lifespan_date=?lpdate where pro_id=?pro_id";
     }

我用谷歌搜索并发现了这个解决方案。

UPDATE table SET status = "Aborted" where date=DATE_ADD(date, INTERVAL 15 DAY)

如何在我的更新查询中应用此功能？有没有其他方法可以在15天后自动更改状态？

Answer 1

了解MySQL事件。首先，您需要在MySQL端打开事件调度程序

https://dev.mysql.com/doc/refman/5.7/en/events-configuration.html

然后创建活动

                    <Popup PlacementTarget="{Binding ElementName=ImgHelp}" Placement="Left" VerticalOffset="48"
                           x:Name="PuHelp" AllowsTransparency="True" IsOpen="True">
                        <Popup.Tag>
                            <system:Double>0.0</system:Double>
                        </Popup.Tag>
                        <Popup.Width>
                            <MultiBinding Converter="{StaticResource CvMultiply}">
                                <Binding Path="ActualWidth" ElementName="GdHelpContent" />
                                <Binding Path="Tag" RelativeSource="{RelativeSource Self}" />
                            </MultiBinding>
                        </Popup.Width>
                        <Popup.Height>
                            <MultiBinding Converter="{StaticResource CvMultiply}">
                                <Binding Path="ActualHeight" ElementName="GdHelpContent" />
                                <Binding Path="Tag" RelativeSource="{RelativeSource Self}" />
                            </MultiBinding>
                        </Popup.Height>
                        <Popup.HorizontalOffset>
                            <MultiBinding Converter="{StaticResource CvNegate}">
                                <Binding Path="ActualWidth" ElementName="GdHelpContent" />
                                <Binding Path="Tag" RelativeSource="{RelativeSource Self}" />
                            </MultiBinding>
                        </Popup.HorizontalOffset>
                        <Popup.Style>
                            <Style TargetType="Popup">
                                <Style.Triggers>
                                    <DataTrigger Binding="{Binding IsHelpOpen, RelativeSource={RelativeSource AncestorType={x:Type local:UC_ApplicationWindow}}}" Value="True">
                                        <DataTrigger.EnterActions>
                                            <BeginStoryboard>
                                                <Storyboard>
                                                    <DoubleAnimation Duration="0:0:0.25" To="1" Storyboard.TargetProperty="Tag" />
                                                </Storyboard>
                                            </BeginStoryboard>
                                        </DataTrigger.EnterActions>
                                        <DataTrigger.ExitActions>
                                            <BeginStoryboard>
                                                <Storyboard>
                                                    <DoubleAnimation Duration="0:0:0.25" To="0" Storyboard.TargetProperty="Tag" />
                                                </Storyboard>
                                            </BeginStoryboard>
                                        </DataTrigger.ExitActions>
                                    </DataTrigger>
                                </Style.Triggers>
                            </Style>
                        </Popup.Style>
                        <Grid x:Name="GdHelpContent" RenderTransformOrigin="1,1">
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition Width="Auto" />
                            </Grid.ColumnDefinitions>
                            <Grid.RowDefinitions>
                                <RowDefinition Height="Auto" />
                            </Grid.RowDefinitions>
                            <Grid.RenderTransform>
                                <TranslateTransform x:Name="tfGrid" X="0" Y="0" />
                            </Grid.RenderTransform>

                            <Grid Background="{StaticResource BrApplicationHeader}">
                                <ContentControl Margin="15" Content="{Binding HelpContent, RelativeSource={RelativeSource AncestorType={x:Type local:UC_ApplicationWindow}}}" />
                            </Grid>
                        </Grid>
                    </Popup>

活动将每天执行一次

如何在15天后自动更新状态？

1 个答案: