Yes, you’d need to use a trigger. (Just checking: is your posted trigger working correctly? At first glance, it looks fine to me.) MySQL’s ON UPDATE CURRENT_TIMESTAMP is a pretty unique, single-purpose shortcut. It is what it is; this construct cannot be used similarly for any other values or for any column types other than … Read more
One of the use cases for RULES are updateable views (although that changes in 9.1 as that version introduces INSTEAD OF triggers for views) Another good explanation can be found in the manual: For the things that can be implemented by both, which is best depends on the usage of the database. A trigger is … Read more
This code will add an event listener to the default local Inbox, then take some action on incoming emails. You need to add that action in the code below. Private WithEvents Items As Outlook.Items Private Sub Application_Startup() Dim olApp As Outlook.Application Dim objNS As Outlook.NameSpace Set olApp = Outlook.Application Set objNS = olApp.GetNamespace(“MAPI”) ‘ default … Read more
I had a similar question here, and my end result was to create a generic IValueConverter that passed the enum value I wanted to match in as the ConverterParameter, and it returns true or false depending on if the bound value matches the (int) value of the Enum. The end result looks like this: XAML … Read more
The problem is that the select are created dynamically, then you need to use .on() try this: $(document).on(‘change’,’#won’,function(){ alert(“PROBANDO”); });
You can’t trigger on a particular column update in SQL. It is applied on a row. You can put your condition for columm in your trigger with an IF statement, as below: DELIMITER // CREATE TRIGGER myTrigger AFTER UPDATE ON myTable FOR EACH ROW BEGIN IF !(NEW.column1 <=> OLD.column1) THEN –type your statements here END … Read more
Use an after insert trigger. Join from the inserted pseudo table to Tb on the primary key. Then update the values of desc. Something like: (But may not compile) CREATE TRIGGER TbFixTb_Trg ON Tb AFTER INSERT AS BEGIN UPDATE Tb SET DESC = SomeTransformationOf(i.DESC) FROM Tb INNER JOIN inserted i on i.Id = Tb.Id END … Read more
You do not need to pass the NEW and OLD as parameters to the trigger function. They are automagically available there: http://www.postgresql.org/docs/9.1/interactive/trigger-definition.html : The trigger function must be declared as a function taking no arguments and returning type trigger. (The trigger function receives its input through a specially-passed TriggerData structure, not in the form of … Read more
A stored procedure is a user defined piece of code written in the local version of PL/SQL, which may return a value (making it a function) that is invoked by calling it explicitly. A trigger is a stored procedure that runs automatically when various events happen (eg update, insert, delete). IMHO stored procedures are to … Read more