Answer / Sandeep Kumar Shukla

sqlerrd 3 is not a standard SQL or Oracle term. It seems like there might be a typo or misunderstanding in the question.

What is the difference between unique and primary key constraints?

1 Answers  

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What is the use of double ampersand (&&) in sql queries? Give an example

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What is the difference between a primary key and a unique key?

1 Answers  

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How to rename a table?

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Can pl sql procedure have a return statement?

1 Answers  

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What is parameter substitution in sql?

1 Answers  

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What are the return values of functions SQLCODE and SQLERRM ?

2 Answers   PreVator,

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What is secondary key?

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How many triggers can be applied to a table?

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How to use sql*plus built-in timers?

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If an unique key constraint on DATE column is created, will it validate the rows that are inserted with SYSDATE?

4 Answers  

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Explain the the update statement in sql?

1 Answers  

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