What is difference between nchar and nvarchar?
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What can be a size of a pl/sql block? Is there any limit?
What is the difference between sum and count in sql?
What is an index? What are the types of indexes? How many clustered indexes can be created on a table?
How can we store rows in PL/SQL using array?
what are the join types in tsql? : Transact sql
Can a key be both primary and foreign?
What is gpt format?
How do we tune the code?
What are operators available in sql?
Can you have multiple SPs with the same name on a database?
Is null operator in sql?
Difference between table function and pipelined function?
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