What is the difference between join and union.

27 Answers   3i Infotech, ABC, Oracle, Polaris, TCS, XT Global,

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What is ON DELETE CASCADE?

3 Answers  

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Can a view be updated/inserted/deleted?If Yes under what conditions?

3 Answers  

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i have doubt that any one tell ref cursor comes in sql pl/sql? pls clarify?

4 Answers   Tech Mahindra,

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Is sql similar to python?

0 Answers  

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Explain two virtual tables available at the time of database trigger execution.

1 Answers  

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How to know the last executed procedure?

0 Answers  

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Difference between views and materialized views?

5 Answers   BirlaSoft,

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How to return multiple rows from the stored procedure?

0 Answers  

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What is meant by Join? What are the different types of Joins available? Explain.

5 Answers   Cap Gemini,

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How to retrieve Duplicate Rows only in a Table? Suppose if a Table Name is "Education". It consists of multiple columns. Then if we insert rows into this table with duplicate records then how can we retrieve only duplicate records from that table?

28 Answers   Alps, Aricent, Bank Of America, Wipro,

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i have a customer table. trans_id trans_date trans_amt debit_credit_indicator 001 01-JAN-13 1099 cr 001 12-JAN-13 500 db 002 24-FEB-13 400 db 002 23-MAR-13 345 cr 001 18-APR-13 800 cr 002 15-MAR-13 600 db 001 12-FEB-13 200 cr i want like this output. trans_id trans_amt debit_credit_indicator i want get highest credit amount and lowest credit amount and highest debit amount and lowest debit amount for each trans_id.

2 Answers   Oracle,

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