How do I remove duplicates in two columns?

0 Answers  

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how to get the third quarter of employee details from emp?

2 Answers   CompuTech,

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write a query to find out the no. of employees whose age is less than 25 and max of salary for the employees belonging to a particular department is less than 20000

6 Answers  

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What is sql*loader and what is it used for?

0 Answers  

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is it necessary to write group by and order by clause together

3 Answers   HCL, Wipro,

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What is inner join in sql?

0 Answers  

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What are the benefits of pl/sql packages?

0 Answers  

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Can we join same table in sql?

0 Answers  

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How would you pass hints to the sql processor?

0 Answers  

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how does a local variable is defined using t-sql? : Transact sql

0 Answers  

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How many row comparison operators are used while working with a subquery?

0 Answers  

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Which clause of an UPDATE statement allows you to affect only certain rows of a table? 1. The WHERE clause 2. The SET clause 3. The ROWS AFFECTED clause 4. The ORDER BY clause

6 Answers   HCL,

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