what is global variable in pl/sql

1 Answers  

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What is union and union all keyword in sql?

0 Answers  

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Hi, Can anybody please explain me the flow of the below query. I am not able to understand how this query works. This query is for finding the Nth highest salary.. SELECT DISTINCT (a.sal) FROM EMP A WHERE &N = (SELECT COUNT (DISTINCT (b.sal)) FROM EMP B WHERE a.sal<=b.sal); If N = 2 then second highest salary will be the o/p. If N = 3 then third highest salary will be the o/p. and so on.. Thanks, Nitin

5 Answers   Deloitte, Ness Technologies,

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diff b/w sub query and co-relater query?

3 Answers   iFlex,

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What version is sql?

0 Answers  

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what are different types of collation sensitivity? : Sql dba

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First round ------------------- - Procedure - Packages - Views - Virtual tables - Can we use dcl with in function? - Joins and few scenarios - Triggers and its type - Pragma, type and its functionality - How to create db link in oracle - Materialized view - How to find duplicate values from table? - Cursor and its functionality - Write a script to display friday and its date from a entire year. - Exception Handling Second round ------------------------ Gave a scenario like. Need to write a function to perform. When user try to change a password. It must not be last five password and a given password can be combination of characters, symbols, upper and lower case.

0 Answers   Prodapt,

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What is a merge query?

1 Answers  

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What do you understand by pl/sql cursors?

0 Answers  

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If 100 tables are there in user_tables.I want to find in which table zero records are there with table name.Is it possible?

2 Answers  

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Can you alter start with clause?

1 Answers   TCS,

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Which join is like inner join?

0 Answers  

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