triggers

问题 the problem is this : I implemented a trigger on the table called CLAN_AFFILIATI that increases (if inseriemento) and decreases (in case of cancellation) an attribute (NUMAFFILIATI) of another table called CLAN. what I would do is block the update NUMAFFILIATI of Clan by the user and had thought to r another trigge on CLAN that did this: trigger on CLAN_AFFILIATI(CLAN VARCHAR,AFFILIATO VARCHAR,RUOLO VARCHAR) CREATE OR REPLACE TRIGGER "AggiornamentoNumAffiliati" AFTER INSERT OR DELETE ON CLAN

问题 I need to create a trigger that fills in a project name for table based off the filename. Currently, I am able to fill in the first project name on import based off the first hostname. Example after Current import: Now I need to fill in the rest of the Null Project Names where Project name is Not Null for the corresponding Filename. Example for Goal Import How do I get this to work dynamically for each time new data is entered? I also want to make sure it is done by filename to make sure no

问题 I have below code which gives me an error: 'meBorder' name cannot be found in the name scope of 'System.Windows.Controls.ControlTemplate'. <Border Height="20" x:Name="meBorder" Margin="0,200,0,0" Grid.Row="0" Background="Red"> <Button x:Name="btn1" Height="125" Width="30" Content="Dipsa" VerticalAlignment="Top"> <Button.Style> <Style TargetType="{x:Type Button}"> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type Button}"> <Grid> <Border> <ContentPresenter

问题 I am using XML Scheduling Plugin (XMLSchedulingDataProcessorPlugin) to create several jobs and triggers on startup in JDBC job store in quartz-scheduler. This works fine but I have a problem with simple triggers configured to run only once. When such a trigger fires, it is removed from the database as there is no next fire time. So far so good. Unfortunately when I restart the application the plugin can't find that trigger so it is reinserted again. Because I use MISFIRE_INSTRUCTION_IGNORE

问题 I need to do this from an ASP.NET web app: Alter Table Contacts Disable Trigger All -- Do some stuff Alter Table Contacts Enable Trigger All In some situations the Disable Trigger statement hangs. Where should I start looking to figure out what's causing this? If I restart SQL server it goes back to behaving normally. 回答1: Look into the Activity Monitor from SSMS to see why it blocks. Or you can look into blocking_session_id column is sys.dm_exec_requests. My guess: schema changes require a

问题 create or replace TRIGGER REFRESH_REST_VIEW AFTER INSERT OR UPDATE ON tbl_contract BEGIN execute DBMS_MVIEW.REFRESH('REST_VIEW'); END REFRESH_REST_VIEW; commit; This is my sql trigger i am using to refresh Materialized View. But it says.. Warning: execution completed with warning TRIGGER REFRESH_REST_VIEW Compiled. P.S. : The trigger will be executed when the data of table (used by Materialized View) takes any DML operation. I have googled enough, many post says it is possible but I am not

问题 I am trying to create a trigger in Oracle. I know sql but i have never created trigger before. I have this code: create or replace trigger "PASSENGER_BOOKING_T1" AFTER insert on "PASSENGER_BOOKING" for each row begin IF (:NEW.CLASS_TYPE == 'ECO') SELECT F.AVL_SEATS_ECOCLASS,F.FLIGHT_ID INTO SEAT, FLIGHT_INFO FROM BOOKING B, JOURNEY_FLIGHT J, FLIGHT F WHERE B.JOURNEY_ID = J.JOURNEY_ID and F.FLIGHT_ID = J.FLIGHT_ID; UPDATE FLIGHT SET AVL_SEATS_ECOCLASS = (SEAT-1) WHERE FLIGHT_ID = FLIGHT_INFO;

问题 I have the following code in a SQL Server 2005 trigger: CREATE TRIGGER [myTrigger] ON [myTable] FOR UPDATE,DELETE AS BEGIN DECLARE @OperationType VARCHAR(6) IF EXISTS(SELECT 1 FROM INSERTED) BEGIN SET @OperationType='Update' END ELSE BEGIN SET @OperationType='Delete' END My question: is there a situation in which @OperationType is not populated correctly? E.G.: the data in the table is changed by a bunch of UPDATE/DELETE statements, but the trigger is not fired once by every one of them? Do

问题 I'm working on a ROR 3 app which uses mysql as the database. Now I want a trigger every time col1 of table1 is updated. But I also want the values of both col1 and col2 of that row in my rails controllers after the trigger is completed ( so as to update an dynamic progress bar ) ... What approach can I follow for this?? 回答1: Please check this manual entry to define a trigger on your table. A trigger will block the trigggering operation until the trigger completes. There is nothing else to do,

问题 I have a trigger that uses the avg() function to calculate a student's gpa based on the number of course scores that are in the course table. Problem here is, when my trigger executes, the GPA parameter in the table is empty. Could anyone see the issue? drop table courses; drop table student; drop table assignments; create table student (sid integer, sname char(10), saddress char(10), gpa integer); create table courses (sid integer, cid integer, cgrade integer); create table assignments ( sid