what is the difference between undefined value and null value? : Sql dba

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What are the Restrictions on Cursor Variables?

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in sql table following column r there i want find 1st paid ,2nd paid,3rd paid date for same |service_type|date |vehicle_no| |------------|------|_---------| |paid |23 jan|MH12H2007 | | | | | |paid |26 feb|MH12H2007 | | | | | | | | | |paid |28 mar|MH12H2007 | i want o/p like below vehicle no| 1st paid date | 2nd paid date|3rd paid |latest paid date| pls help me out

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What are the pre requisites?

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How do you run a query?

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Explain the methods used to protect source code of pl/sql.

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What are sql procedures?

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What are the advantages of pl sql over sql?

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What is recursive stored procedure?

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Are subqueries faster than joins?

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What is duration in sql profiler trace?

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What is difference between ms sql and mysql?

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