Subject | Is a joined query faster than a subquery, or doesn't it matter? |
---|---|
Author | Jörg Schiemann |
Post date | 2001-02-14T11:06:13Z |
Hi,
I've a master and a detail table like
create table "SampleMaster" (
MasterID integer not null primary key,
OrderNo integer not null,
Comment varchar(20),
.
.
.
);
and
create table "SampleDetail" (
DetailID integer not null primary key,
MasterID integer not null,
OrderPos integer not null,
quantity integer not null,
.
.
.
constraint fk_MasterID foreign key (MasterID) references SampleMaster
(MasterID)
);
Is a query with a subquery faster then a joined query if I want all fields
from the SampleDetail and only OrderNo from SampleMaster?
TIA
Jörg Schiemann
I've a master and a detail table like
create table "SampleMaster" (
MasterID integer not null primary key,
OrderNo integer not null,
Comment varchar(20),
.
.
.
);
and
create table "SampleDetail" (
DetailID integer not null primary key,
MasterID integer not null,
OrderPos integer not null,
quantity integer not null,
.
.
.
constraint fk_MasterID foreign key (MasterID) references SampleMaster
(MasterID)
);
Is a query with a subquery faster then a joined query if I want all fields
from the SampleDetail and only OrderNo from SampleMaster?
TIA
Jörg Schiemann