Explain unique key in sql.
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how a reference cursor works?what all adnvantages are gained with it..specify the situation?
a procedure one in two out parameters i am waiting it in a sql query can i get the output
I m giving Source, Destination and Age. Write a procedure or function, it will give to u this source to destination tickets are available or not, if available then check this person is senior citizen or not,if this person is senior citizen then give some discount. PLZ give this answer...... Thanks advance.....
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