| How to create view [message #11248] |
Mon, 15 March 2004 19:39  |
sri
Messages: 154
Registered: February 2000
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Senior Member |
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How to create view from two tables , with selected columns, no primaty key relation between these two tables.
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| Re: How to create view [message #11249 is a reply to message #11248] |
Mon, 15 March 2004 20:12  |
Jitendra Agrawal
Messages: 71
Registered: December 2003
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Member |
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Hi,
SQL> create view VIEW_NAME as select FIELD from TABLE1 a, TABLE2 b where CONDITION
CONDITION can be any condition like : a.field1=b.field1
Here is an example that I posted in another forum.
SQL> create table table_test1 (field1 number(4), field2 number(4));
Table created.
SQL> ed
Wrote file afiedt.buf
1* create table table_test2 (field1 number(4), field2 number(4))
SQL> /
Table created.
SQL> insert into table_test1 (field1) values (1);
1 row created.
SQL> insert into table_test1 (field1, field2) values (2, 1);
1 row created.
SQL> insert into table_test2 (field1, field2) values (1, 2);
1 row created.
SQL> insert into table_test2 (field1) values (2);
1 row created.
SQL> select * from table_test1;
FIELD1 FIELD2
---------- ----------
1
2 1
SQL> select * from table_test2;
FIELD1 FIELD2
---------- ----------
1 2
2
SQL> create view view_test2 as select nvl(a.field2, b.field2) field1 from table_test1 a, table_test2 b where a.field1=b.field1;
View created.
SQL> select * from view_test2;
FIELD1
----------
2
1
Hope this helps,
Jitendra Agrawal,
http://www.telemune.com/
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