mysql trigger before insert
How can i make this trigger update my table DATA if there is no row to update.
Until i insert data in other table lets called ABC, this table uses a after insert trigger to insert information into DATA table , but the problem here is that it is firstly inserted information into Prod_Has_Ma table (its just how the system works).So this is the trigger that Prod_Has_Ma has but it wont update any information into DATA table how can i fix this problem. Is there a awy to verify if the field of DATA table is null and insert corresponding information to it?
I'll aprecciate any type of help, thanks.
DELIMITER
//
create trigger ai_P_has_M
before insert on Prod_has_Ma
for each row
BEGIN
update DATA
set
Cod_Maquina1=new.Cod_Maquina1,
Nombre_Maquina=
(
SELECT Nombre_Maquina
from Maquina
where Cod_Maquina=new.Cod_Maquina1
),
Seccion=
(SELECT Seccion
from Maquina
where Cod_Maquina=new.Cod_Maquina1),
id_empresa =
(SELECT id_empresa
from Maquina
where Cod_Maquina=new.Cod_Maquina1
)
where Cod_Produccion = new.Cod_Produccion2;
END;
//
DELIMITER ;
mysql trigger mysql-workbench
asked 8 mins ago
Cristian GarzonCristian Garzon
11
add a comment |
How can i make this trigger update my table DATA if there is no row to update.
Until i insert data in other table lets called ABC, this table uses a after insert trigger to insert information into DATA table , but the problem here is that it is firstly inserted information into Prod_Has_Ma table (its just how the system works).So this is the trigger that Prod_Has_Ma has but it wont update any information into DATA table how can i fix this problem. Is there a awy to verify if the field of DATA table is null and insert corresponding information to it?
I'll aprecciate any type of help, thanks.
DELIMITER
//
create trigger ai_P_has_M
before insert on Prod_has_Ma
for each row
BEGIN
update DATA
set
Cod_Maquina1=new.Cod_Maquina1,
Nombre_Maquina=
(
SELECT Nombre_Maquina
from Maquina
where Cod_Maquina=new.Cod_Maquina1
),
Seccion=
(SELECT Seccion
from Maquina
where Cod_Maquina=new.Cod_Maquina1),
id_empresa =
(SELECT id_empresa
from Maquina
where Cod_Maquina=new.Cod_Maquina1
)
where Cod_Produccion = new.Cod_Produccion2;
END;
//
DELIMITER ;
mysql trigger mysql-workbench
asked 8 mins ago
Cristian GarzonCristian Garzon
11
add a comment |
How can i make this trigger update my table DATA if there is no row to update.
Until i insert data in other table lets called ABC, this table uses a after insert trigger to insert information into DATA table , but the problem here is that it is firstly inserted information into Prod_Has_Ma table (its just how the system works).So this is the trigger that Prod_Has_Ma has but it wont update any information into DATA table how can i fix this problem. Is there a awy to verify if the field of DATA table is null and insert corresponding information to it?
I'll aprecciate any type of help, thanks.
DELIMITER
//
create trigger ai_P_has_M
before insert on Prod_has_Ma
for each row
BEGIN
update DATA
set
Cod_Maquina1=new.Cod_Maquina1,
Nombre_Maquina=
(
SELECT Nombre_Maquina
from Maquina
where Cod_Maquina=new.Cod_Maquina1
),
Seccion=
(SELECT Seccion
from Maquina
where Cod_Maquina=new.Cod_Maquina1),
id_empresa =
(SELECT id_empresa
from Maquina
where Cod_Maquina=new.Cod_Maquina1
)
where Cod_Produccion = new.Cod_Produccion2;
END;
//
DELIMITER ;
mysql trigger mysql-workbench
asked 8 mins ago
Cristian GarzonCristian Garzon
11
How can i make this trigger update my table DATA if there is no row to update.
Until i insert data in other table lets called ABC, this table uses a after insert trigger to insert information into DATA table , but the problem here is that it is firstly inserted information into Prod_Has_Ma table (its just how the system works).So this is the trigger that Prod_Has_Ma has but it wont update any information into DATA table how can i fix this problem. Is there a awy to verify if the field of DATA table is null and insert corresponding information to it?
I'll aprecciate any type of help, thanks.
DELIMITER
//
create trigger ai_P_has_M
before insert on Prod_has_Ma
for each row
BEGIN
update DATA
set
Cod_Maquina1=new.Cod_Maquina1,
Nombre_Maquina=
(
SELECT Nombre_Maquina
from Maquina
where Cod_Maquina=new.Cod_Maquina1
),
Seccion=
(SELECT Seccion
from Maquina
where Cod_Maquina=new.Cod_Maquina1),
id_empresa =
(SELECT id_empresa
from Maquina
where Cod_Maquina=new.Cod_Maquina1
)
where Cod_Produccion = new.Cod_Produccion2;
END;
//
DELIMITER ;
mysql trigger mysql-workbench
mysql trigger mysql-workbench
asked 8 mins ago
Cristian GarzonCristian Garzon
11
asked 8 mins ago
Cristian GarzonCristian Garzon
11
asked 8 mins ago
Cristian GarzonCristian Garzon
11
asked 8 mins ago
Cristian GarzonCristian Garzon
11
asked 8 mins ago
Cristian GarzonCristian Garzon
11
11
add a comment |
add a comment |
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