What is cost in sql execution plan?
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declare l1 number := null; l2 number :=null; begin if l1=l2 then message('equal'); else if l1<>l2 then message('not equal'); else message('else'); end if; end if; end; What will be the output ?
What are the return values of functions SQLCODE and SQLERRM ?
what are the advantages of package?
What are all the different types of indexes?
Explain raise_application_error.
What is the use of stored procedures?
What is difference between joins and union?
What is trigger in sql?
how to get enames with comma seperated values by deptwise on emp table?
Is a table valued function object?
Can a foreign key be a duplicate?
What is a unique key and primary key and foreign key?
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