What is the difference between pre-select and pre-query?
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What are the logical operations?
how to retrieve data from different tables ,place this data in different excel worksheets.
Difference between an implicit & an explicit cursor.?
Where are the settings stored for each instance in oracle?
How to filter out duplications in the returning rows using oracle?
What are Clusters ?
Which dictionary tables and/or views would you look at to diagnose a locking issue?
What is Parallel Server ?
How would you optimize a slow SQL query?
What is the difference between postgresql and oracle?
How to define a variable of a specific record type?
What will be the syntax to find current date and time in format "yyyy-mm-dd"?