What is coalesce sql?
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What is dense_rank?
What plvcmt and plvrb does in pl/sql?
types of exceptions and what is meant by pragma autonomous_transaction ?what is the use.
Can you selectively load only those records that you need? : aql loader
What is a pdo connection?
What has stored procedures in sql?
What is the difference between nvl function, ifnull function, and isnull function?
What is the maximum number of rows in sql table?
What is a pl/sql block?
What are the different set operators available in sql?
What is before trigger?
Explain the uses of control file.
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