triggers

问题 I'm trying to make a custom control that consists of several buttons and a couple labels, but the buttons are supposed to be invisible, showing only the content within them. I can get rid of the border, background, etc by setting them to Transparent. But whenever I MouseOver them the default windows hover effect shows the whole button again. I've tried numerous guides on custom controls, but ultimately cannot figure out how to override this. Basically my questions boil down to, how much of

问题 I have a datatable called deal in Oracle with four columns: DealID: (PK) LegID OrigID Description The problem is that if I want to insert a deal with description = A, the attributes LegID and OrigID must be unique, otherwise, there is not problem. How can i make this check? I had thought a trigger after insert. There are more solutions? Thanks in advance!! 回答1: You need a function based unique index : create table tt ( DealID number(10) primary key, LegID number(10), OrigID number(10),

问题 I have to use a view (not already created, because it's needed within that UPDATE TRIGGER) in an UPDATE inside an UPDATE TRIGGER. So this is my code: CREATE TRIGGER lunghezza_sentiero_datoderivato_UPDATE2 AFTER UPDATE ON TAPPA FOR EACH ROW BEGIN CREATE VIEW tempoOLD_NULL(IDsentiero, tempo) AS SELECT IDsentiero, tempo FROM SENTIERO WHERE tempo IS NULL and SENTIERO.IDsentiero IN (SELECT DISTINCT IDsentiero FROM SENTIERO__HA__TAPPA AS sht WHERE NEW.IDtappa=sht.IDtappa); CREATE VIEW lunghezzaOLD

问题 I have a table where I have an auto increment column id and another column ord . My goal is to have a 'default' value for ord that is id . I am using a trigger (see below), but it always uses 0 instead of the id value. When I remove the auto_increment from id , it works as it should. How can I set the 'default' value of a field to the one of an auto_increment field? Table CREATE TABLE IF NOT EXISTS `mytable` ( `id` int(11) NOT NULL AUTO_INCREMENT, `ord` int(11) DEFAULT NULL, PRIMARY KEY (`id`

问题 I have a table where I have an auto increment column id and another column ord . My goal is to have a 'default' value for ord that is id . I am using a trigger (see below), but it always uses 0 instead of the id value. When I remove the auto_increment from id , it works as it should. How can I set the 'default' value of a field to the one of an auto_increment field? Table CREATE TABLE IF NOT EXISTS `mytable` ( `id` int(11) NOT NULL AUTO_INCREMENT, `ord` int(11) DEFAULT NULL, PRIMARY KEY (`id`

问题 I am checking the output of the inserted / deleted table using the following trigger, how can I pass on the intercepted UPDATE command to the server after verifying columns? CREATE TRIGGER Test1_LastUpdate ON Test1 INSTEAD OF UPDATE AS SELECT * FROM Inserted SELECT * FROM Deleted GO EDIT: I am looking for a solution that will not need to be changed after schema updates. CREATE TRIGGER Test1_LastUpdate2 ON Test1 INSTEAD OF UPDATE AS --COMMIT UPDATE THAT WAS INTERCEPTED END 回答1: The only way

问题 I am checking the output of the inserted / deleted table using the following trigger, how can I pass on the intercepted UPDATE command to the server after verifying columns? CREATE TRIGGER Test1_LastUpdate ON Test1 INSTEAD OF UPDATE AS SELECT * FROM Inserted SELECT * FROM Deleted GO EDIT: I am looking for a solution that will not need to be changed after schema updates. CREATE TRIGGER Test1_LastUpdate2 ON Test1 INSTEAD OF UPDATE AS --COMMIT UPDATE THAT WAS INTERCEPTED END 回答1: The only way

问题 I have created a sample google form, and defined a function like below: function onFormSubmit(e) { Logger.log('Inside function'); Logger.log('Emailing data row ->'); var itemResponses = e.getItemResponses(); var email = itemResponses[0].getResponse(); Logger.log(itemResponses); } In Edit-> Current project's triggers I have added the function to be called on form submit: In My Executions section I see the error below: TypeError: Cannot call method "getItemResponses" of undefined. at onSubmit

问题 I've been trying to search and figure this on my own, but no luck so far :( I'd like to create MySQL triggers using DataMapper (or any other Ruby db adapter). Is this possible? I'd really like to have the triggers become part of my code versioning (for documentation and maintenance). 回答1: Simply execute arbitrary SQL in your migrations migration 1, :create_people_table do up do execute 'CREATE TRIGGER ...' end down do execute 'DROP TRIGGER ...' end end Of course, it won't be terribly portable

问题 In my PostgreSQL 9.1 database I have multiple tables and one trigger function. Right now I am creating the trigger for each table by using that trigger function. This methodology working fine. My boss has asked me to create the trigger commonly (only one time) by re-using that trigger function. That one trigger function should get used by all the tables in my database. 回答1: You can find an example of creating a trigger with dynamic SQL using PL/PgSQL in the Audit Trigger sample for PostgreSQL