Can you assign multiple query result rows to a variable?
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What is a heap related to database ?
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What is meant by an index?
How to retrieve 5th highest sal from emp table?
how table is defined in plsql table? how can i select column from plsql table? can i use select * from plsql table type?
What is ceil and floor in oracle?
What privilege is needed for a user to create views in oracle?
How to create an oracle testing table?
A VIEWS takes memory in the database. If yes, how can u proove it? is there any way to display the size of views?
 What are the oracle DML commands possible through an update strategy?
3. Adapt your query in (2) above so that only post codes with more than twenty orders are displayed.
what are corelated subqueries
What is a cursor variable?