Where not exists in sql?

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Can a foreign key be null?

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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

4 Answers  

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Can a trigger call a stored procedure?

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write a procedure to print a statement or number not using "dbms_output.put_line" package.write a procedure instead of it using procdure name as "print" ex:- declare a number:=2; begin print(a); end; /* when U type above procedure 2 have to should be printed*/

2 Answers   iFlex,

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Are null values same as that of zero or a blank space?

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What is mutating table?

11 Answers   Saama Tech,

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What is triggering circuit?

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explain advantages of myisam over innodb? : Sql dba

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what is sql optimization

1 Answers   Fidelity,

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what is SCALAR Queries?

2 Answers   ITC Infotech,

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Who developed sql?

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