What are aggregate and scalar functions?
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What are the set operators in sql?
what is the difference between trigger and constraint?
I want to display the employees who have joined in last two months. (It should be executed randomly means If I execute the query in March it should display Jan and Feb joined employees. Same query if i execute in Feb, 2007 it should display dec, 2006 and jan 2007 joined employees.
how to load data with out header and footer records in a database using sql*loader? pls tell me the answer urgently
What is the Query to print out the individual total number of duplicate row in sql.
What is pl sql variable?
how to find the second highest salary from emp table?
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What do you know by pl/sql cursors?
How do you write a subquery?
What is trigger in sql? Explain
what is ref cursor in pl/sql?
Can we use rowid as primary key?
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