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Oracle Database Interview Question:
Can SELECT Statements Be Used on Views in Oracle?
Submitted by: AdministratorSelect (query) statements can used on views in the same way as tables. The following tutorial exercise helps you creating a view and running a query statement on the view:
SQL> CREATE VIEW managed_dept AS
SELECT * FROM departments WHERE manager_id IS NOT NULL;
View created.
SQL> SELECT * FROM managed_dept WHERE location_id = 1700;
<pre>DEPARTMENT_ID DEPARTMENT_NAME MANAGER_ID LOCATION_ID
------------- -------------------- ---------- -----------
10 Administration 200 1700
30 Purchasing 114 1700
90 Executive 100 1700
100 Finance 108 1700
110 Accounting 205 1700</pre>
Submitted by: Administrator
SQL> CREATE VIEW managed_dept AS
SELECT * FROM departments WHERE manager_id IS NOT NULL;
View created.
SQL> SELECT * FROM managed_dept WHERE location_id = 1700;
<pre>DEPARTMENT_ID DEPARTMENT_NAME MANAGER_ID LOCATION_ID
------------- -------------------- ---------- -----------
10 Administration 200 1700
30 Purchasing 114 1700
90 Executive 100 1700
100 Finance 108 1700
110 Accounting 205 1700</pre>
Submitted by: Administrator
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