what are corelated subqueries
Answer / anonymus
In a SQL database query, a correlated subquery (also known as a synchronized subquery) is a subquery (a query nested inside another query) that uses values from the outer query. Because the subquery may be evaluated once for each row processed by the outer query, it can be inefficient.
| Is This Answer Correct ? | 0 Yes | 0 No |
11. Display the client number and name and the client number and name of the person who referred that client.
What is oracle thin client?
What is flashback Query ? And Use ?
25. Display the client number and the value of the highest value order placed by that client.
what is primary key?
Explain the use of tables option in exp command.
How to lock and unlock a user account in oracle?
For a field in a repeating frame, can the source come from the column which does not exist in the data group which forms the base for the frame ?
What privilege is needed for a user to query tables in another schema?
What is a trigger and what are its types?
What is sharded cluster?
What is a Tablespace?