How to maintain the history of code changes of pl/sql?

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Why do we use set serveroutput on?

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How many levels can subqueries be nested in a FROM clause?

7 Answers  

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What is the Subquery?

4 Answers  

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I have 2 table A and B. In A 1 lakh record is present. In b 20 thousand data is present. To get the unique data from table A and B which join we should prefer left inner join or right outer join. Please answer.

4 Answers   GE,

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What view means?

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What is an index? What are the types of indexes? How many clustered indexes can be created on a table?

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What is rownum in sql?

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What are functions in sql?

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How many indexes can be created on a table in sql?

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What are the types of subqueries?

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Write a query to find the employees from EMP table those who have joined in Monday. (there is a column as hiredate which is a date column i.e values are like 03-DEC-81)

5 Answers  

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