插入后触发

Question

我正在尝试编写将值 (+1) 输入到另一列的触发器。

如果我在 dbo 中添加新车。deelnemers/autonr 我的 dbo.auto's/risico 列应该添加值 +1

create trigger trRisicos
on deelnemers
after insert
as
begin
    set nocount on;

    declare u/autonr int

    select u/autonr = inserted.autonr
    from inserted

    insert into autos
    values (@autonr, 1)
end

这是我目前的代码。

dbo.deelnemers/autonr (PK, FK, INT, NOT NULL)
dbo.deelnemers/evenementnr (PK, FK, INT, NOT NULL)

dbo.autos/autonr (PK, INT, NOT NULL)
dbo.autos/typenaam (CHAR(50), NULL)
dbo.autos/bouwjaar (INT, NULL)    
dbo.autos/waarde (INT, NULL)
dbo.autos/passagiers (INT, NULL)
dbo.autos/lidnr (FK, INT, NULL)
dbo.autos/Risico (SMALLINT, NULL)

Answer 1

试试这个：


create trigger trRisicos
on deelnemers
after insert
as
begin
    set nocount on;

    INSERT INTO autos (autonr, risico)
    SELECT autonr, 1
    FROM INSERTED;
end

插入后触发

Ttrigger after insert

sql-server

tsql

database-trigger