triggers

问题 I need some help in understanding triggers and how they work. I have 3 tables: Customers Id | Balance Invoices Id | Custid | Amount Payments Id | CustId | Amount I have an insert statement to insert the invoices: $this->db->insert('invoices', array( 'CustomerId' => $data['customerId'], 'Description' => $data['Description'], 'DateCreated' => $data['DateCreated'], 'Amount' => $data['Amount'] )); and need to update the customers balance after the insert. Similarly, after inserting or creating a

问题 Good day I have a legacy database that was designed for a specific front end application. I am doing multiples cases of additional app development using this data however, the legacy database has proven inadequate to work with going into the future. Unfortunately the legacy database has to stay in place due to the fact that i still need the front end application running. I have created a new database of similar structure that will be used, every time a vehicle (the example we'll use) is added

问题 How can I trigger the backspace key event in jQuery? The following example isn't working: var e = jQuery.Event("backspace", { keyCode: 8 }); $("#myarea").trigger( e ); 回答1: You can't actually trigger it. You could, for example, remove the last character from a certain input, but you can't trigger the actual key. Example: var str = $('#input').val(); $('#input').val(str.substring(0, str.length - 1)); 回答2: You can't trigger the backpace key. With the jquery caret plugin, you can simulate the

问题 How can I trigger the backspace key event in jQuery? The following example isn't working: var e = jQuery.Event("backspace", { keyCode: 8 }); $("#myarea").trigger( e ); 回答1: You can't actually trigger it. You could, for example, remove the last character from a certain input, but you can't trigger the actual key. Example: var str = $('#input').val(); $('#input').val(str.substring(0, str.length - 1)); 回答2: You can't trigger the backpace key. With the jquery caret plugin, you can simulate the

问题 I'm tryin' to make the article's link clickable on the whole article space. First, I did the hover thing, changing color on mouseover and so on... then on click it should trigger the link, but this gives a "too much recursion". I think it's a event bubbling problem. I tried to work with event.cancelBubble = true; or stopPropagation() with no luck. Worse luck! anyone? $("div.boxContent").each(function() { if ($(this).find(".btn").length) { var $fade = $(this).find("div.btn a > span.hover");

问题 I'm tryin' to make the article's link clickable on the whole article space. First, I did the hover thing, changing color on mouseover and so on... then on click it should trigger the link, but this gives a "too much recursion". I think it's a event bubbling problem. I tried to work with event.cancelBubble = true; or stopPropagation() with no luck. Worse luck! anyone? $("div.boxContent").each(function() { if ($(this).find(".btn").length) { var $fade = $(this).find("div.btn a > span.hover");

问题 i looked at the google app script installable trigger docs online (https://developers.google.com/apps-script/support) , and one of the examples shows how 2 create 2 time triggers. function createTimeDrivenTriggers() { // Trigger every 6 hours. ScriptApp.newTrigger('myFunction') .timeBased() .everyHours(6) .create(); // Trigger every Monday at 09:00. ScriptApp.newTrigger('myFunction') .timeBased() .onWeekDay(ScriptApp.WeekDay.MONDAY) .atHour(9) .create(); } My code: function

问题 i looked at the google app script installable trigger docs online (https://developers.google.com/apps-script/support) , and one of the examples shows how 2 create 2 time triggers. function createTimeDrivenTriggers() { // Trigger every 6 hours. ScriptApp.newTrigger('myFunction') .timeBased() .everyHours(6) .create(); // Trigger every Monday at 09:00. ScriptApp.newTrigger('myFunction') .timeBased() .onWeekDay(ScriptApp.WeekDay.MONDAY) .atHour(9) .create(); } My code: function

问题 SET ANSI_NULLS ON SET QUOTED_IDENTIFIER ON GO CREATE TRIGGER dbo.transferVehicle ON dbo.Vehicles AFTER INSERT AS BEGIN SET NOCOUNT ON; DECLARE @Level0Key INT, @Level1Key INT, @Level2Key INT, @Level3Key INT, @Level4Key INT, @Level5Key INT,@Level6Key INT,@Level7Key INT, @LocKey INT; SELECT @LocKey = [LocKey] FROM Inserted ; with tbParent as ( select * from Canepro.dbo.locations where LocKey= @LocKey union all select locations.* from Canepro.dbo.locations join tbParent on locations.LocKey =

问题 I am a beginner on SQL and need help setting a Trigger I need to set a trigger so that if 1 tutor has over 3 different schedule ID's this is not allowed!! Table TutorID/ScheduleID/Student 1 1 Tom 1 1 Harry 1 1 Lima 1 2 Zany 1 2 Logan 1 3 Zoe 1 3 Lana Tutor ID/ Tutor Name 1 Sam how can I restrict someone from inserting another class? 回答1: DISCLAIMER: To be completely honest I'm not convinced doing this through a SQL Trigger is the best solution, far better to control this sort of thing through