I have a table for about 100,000 users in it.

First Case:

explain select * from users where state = 'ca'

when i do an explain plan for the above query i got the cost as 5200

Second Case:

Create or replace view vw_users as select * from users

Explain select * from vw_users where state = 'ca'

when i do an explain plan on the second query i got the cost as 100,000.

How does the where clause in the view work ?? Is the where clause applied after the view retrieves all the rows. Please let know, how can i fix this issue. Thanks