what is the difference between primary key and unique key? : Sql dba

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How to fetch values from testtable1 that are not in testtable2 without using not keyword?

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In a PL/SQL block,which loop type should be used in a performance point of view & Why (as both loops can do the same task) 1) open - Fetch loop 2) for loop

4 Answers   JDA,

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Is there a pl/sql pragma similar to deterministic, but for the scope of one single sql select?

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I need a exceptoin in pl/sql block so that if any errors occur in the block then no exception should errors should raise?

1 Answers  

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What is pl sql variable?

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Does SQL*Plus contains pl/sql Engine?

1 Answers   TCS,

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IF i write before / after insert / update trigger and i do rollback what will happen?

5 Answers   KPIT,

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How to take user input in pl sql?

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Can we use two order by clause in query?

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Can we relate two different tables from two different users in ORACLE,PL/SQL?

4 Answers  

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What is difference between inner join and cross join?

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