Triggers en sql

create database tienda;

use tienda

create table pedidos(folio int primary key, fecha date,precio float,cantidad int,total float,fecha_entre date,estatus char(50));

//creo que no se usa jaja

create table producto(id_producto int primary key,nombre char(50),precio float);

create table bitacora(texto char(250));

--- 1.-

delimiter //

create trigger cancela before delete on pedidos for each row begin if old.estatus="Embarcado" then delete from pedidos where folio=old.folio; end if; end //

--- 2.-

delimiter //

create trigger descuento before insert on pedidos

for each row begin if new.fecha>="2015/03/04" and new.fecha<="2015/03/10"

then set new.total=new.precio*new.cantidad/2;

else set new.total=new.precio*new.cantidad;

end if; end //

3:

create trigger aceptado before insert on pedidos

for each row begin

if new. fecha_entre<="2015/03/31" then

set new.fecha_entre=new.fecha_entre;

else

set new.folio=0,new.folio=0,new.fecha=0,new.precio=0,new.cantidad=0,new.total=0,new.fecha_entre=0,new.estatus=0;

end if; end//

--- 4.-

create trigger total before insert on pedidos for each row set new.total=new.precio*new.cantidad;

--- 6:

en mysql

create user 'jethro'@'localhost' identified by '123';

create user 'sandra'@'localhost' identified by 'abc';

create user 'panfilo'@'localhost' identified by 'abc123';

privilegios

C:\Users\jethrox>cd ...

C:\Users\jethrox>cd..

C:\Users>cd..

C:\>cd appserv/mysql/bin

C:\AppServ\MySQL\bin>mysql -u jethro -h localhost -p

mysql

grant insert,select,delete,update on pedidos to 'jethro'@'localhost';

grant insert,update on pedidos to 'sandra'@'localhost';

grant insert,delete on pedidos to 'panfilo'@'localhost';

grant insert,select,delete,update on producto to 'jethro'@'localhost';

grant insert,update on producto to 'sandra'@'localhost';

grant insert,delete on producto to 'panfilo'@'localhost';

grant select on pedidos to 'jethro'@'localhost'

grant delete on pedidos to 'panfilo'@'localhost';

grant update on pedidos to 'panfilo'@'localhost';

5:

create trigger

...