Is this possible in a view?
Hi,
I'm wondering if it is possible to do something using a view. It's difficult to even explain what I'm trying to do, but here goes.
I have two tables. The first contains "parent" information about a record and includes keys for one to four children. The second table contains "child" information. I would like to write a view that will return the parent information, and the information for the one to four children associated with the parent, in one record. I know I can accomplish this through multiple SQL statements, but I'm wondering if it can be done in a view. Returning all of the data in a single record would really simplify my program using this information.
Does anyone know if this is possible, and if so, could you please provide a small code sample?
Thanks for your help!
Hi hoek,
We are running Oracle 11g. Here is a script to create two tables (I might be taking this parent-child example a little far) and the results I'd like to see from my view. Sorry for all the dashes in the output, it was the only way I could figure out to make something that resembles a table.
Thanks for the help!
Drop Table PARENT_TBL;
Create Table PARENT_TBL
(PARENT_NUM NUMBER,
FATHER VARCHAR2(10),
MOTHER VARCHAR2(10),
CHILD1 NUMBER,
CHILD2 NUMBER,
CHILD3 NUMBER,
Constraint PARENT_TBL__PK PRIMARY KEY (PARENT_NUM));
Insert Into PARENT_TBL Values (1,'Tom','Sue',1,2,NULL);
Insert Into PARENT_TBL Values (2,'Bill','Jane',3,NULL,NULL);
Insert Into PARENT_TBL Values (3,'Harry','Wendy',4,5,6);
Drop Table CHILD_TBL;
Create Table CHILD_TBL
(CHILD_NUM NUMBER,
NAME VARCHAR2(10),
GENDER VARCHAR2(5),
AGE NUMBER,
Constraint CHILD_TBL__PK PRIMARY KEY (CHILD_NUM));
Insert Into CHILD_TBL Values (1,'Sally','girl',3);
Insert Into CHILD_TBL Values (2,'Roger','boy',6);
Insert Into CHILD_TBL Values (3,'Sam','boy',3);
Insert Into CHILD_TBL Values (4,'Lisa','girl',5);
Insert Into CHILD_TBL Values (5,'Molly','girl',8);
Insert Into CHILD_TBL Values (6,'Bill','boy',11);
Father-Mother-Child1-Gender1-Age1-Child2-Gender2-Age2-Child3-Gender3-Age3
Tom---Sue------Sally---girl--------3------Roger--boy------6
Bill-----Jane-----Sam---boy-------3
Harry--Wendy--Lisa---girl--------5------Molly---girl--------8-----Bill----boy------11
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