triggers

问题 I have an issue with the IsMouveOver trigger with a TabItem Element. When the mouse cursor is on a TabItem, its background color changes, which is what I want => It works. However the background color of the TabItem also changes whenever my mouse cursor is on an item inside the TabItem. Here's the XAML related to the styling: <Style x:Key="SupTest" TargetType="{x:Type TabItem}"> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type TabItem}"> <Border Margin="2" Name

问题 I am working on a system in which I need to store Avro Schemas in Cassandra database. So in Cassandra we will be storing something like this SchemaId AvroSchema 1 some schema 2 another schema Now suppose as soon as I insert another row in the above table in Cassandra and now the table is like this - SchemaId AvroSchema 1 some schema 2 another schema 3 another new schema As soon as I insert a new row in the above table - I need to tell my Java program to go and pull the new schema id and

问题 I have created this trigger to insert a value calculated value to a field in the table in case the user forget to put the data himself: DELIMITER // CREATE TRIGGER OnNewTableRegistry BEFORE INSERT ON eduardo8_plataforma.tabela FOR EACH ROW BEGIN IF NEW.ut = null THEN SET NEW.ut = GetUT('tabela'); ELSEIF NEW.ut = '' THEN SET NEW.ut = GetUT('tabela'); END IF; END; // DELIMITER ; But I need to do the same with every table in that database. Is it possible to use the same trigger to all the tables

问题 Running this procedure causes MySQL (or phpMyAdmin) to freeze. I have to stop MySQL with from XAMPP command, which freezes and "is not responding" about 20 seconds before stopping. I believe this is caused by the delimiter command, which on it's own begins the problems. I have tried using a different delimiter ("//") to no effect. DELIMITER $ CREATE TRIGGER coroner AFTER INSERT ON events FOR EACH ROW BEGIN UPDATE teams WHERE id = NEW.victim SET live = live-1; UPDATE teams WHERE id = NEW

问题 Is there any way to enable or disable a SQL SERVER trigger programmatically in C#, or do I have to modify the trigger itself to control whether or not my code invokes it? 回答1: Execute a DISABLE TRIGGER via a SqlCommand 来源： https://stackoverflow.com/questions/2838062/enable-disable-trigger-via-code-c-sharp

问题 I'm trying to remove a row after inserted in a temp table and I get this error: INSERT INTO `temp_program_counter` (`id`, `program_id`) values (NULL, '275') Can't update table 'temp_program_counter' in stored function/trigger because it is already used by statement which invoked this stored function/trigger. And here is my trigger: DELIMITER $$ DROP TRIGGER IF EXISTS `testtemp`$$ CREATE TRIGGER `testtemp` AFTER INSERT ON `temp_program_counter` FOR EACH ROW BEGIN UPDATE `program` SET `view

问题 I have two tables. Posts , Votes . I have a column in the Posts table named total_votes . Also I have a trigger for updating it when user gives a vote to the post. Here is my trigger: delimiter // CREATE TRIGGER total_votes AFTER INSERT ON Votes FOR EACH ROW begin update posts set total_votes = total_votes+new.value where post.id = new.post_id; end // So I need to check the number of user reputation, that If they are more than 50, then the vote stores, else, the vote not store. how can I do

问题 At work we have just started building an auditing framework for our database (i.e. to log what data has changed when it is created or updated). We'd quite like to implement this using triggers as data sometimes gets imported into the system from other places, not just via the front-end. This seems to be a fairly common solution. However I'd like to make one addition: if a user runs an update which updates more than one table, I'd like those to be grouped together in a batch (i.e. to generate

问题 I have a ViewModel which exposes the string property PageToolBarVisible which can be true or false : private string _pageToolBarVisible; public string PageToolBarVisible { get { return _pageToolBarVisible; } set { _pageToolBarVisible = value; OnPropertyChanged("PageToolBarVisible"); } } Then on my View I have this DataTrigger which displays or hides the toolbar accordingly: <Style x:Key="PageToolBarStyle" TargetType="Border"> <Style.Triggers> <DataTrigger Binding="{Binding PageToolBarVisible}

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 5 years ago . delimiter // CREATE TRIGGER `range` BEFORE INSERT ON touristCompany.hotels FOR EACH ROW BEGIN IF NEW.star >5 THEN SET NEW.star = 5; ELSEIF NEW.star < 1 THEN SET NEW.star = 1; END IF; END;// delimiter ; 回答1: You need to create the trigger within the same schema/database where the insert operation is happening.