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

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Is sql pronounced sequel or sql?

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What is trigger in sql and its types?

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What are the differences between Database Trigger and Integrity constraints ?

4 Answers  

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what is sql optimization

1 Answers   Fidelity,

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list out some tools through which we can draw e-r diagrams for mysql. : Sql dba

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one of the column in my table contains the data like SAL ---- 1000 1000 2000 3000 3000 So my requirement is i want output like SAL --- 1000 2000 3000 it mean i want to delete duplicate rows in the table permanently and i want output in the above formatow should u write query?

13 Answers   Cap Gemini, TCS,

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There is a sequence with min value 100. I want to alter this sequence to min value as 101. If the table has already data in the sequence column as 100,101,102... Is it possible to do so ?

4 Answers   IBM,

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What is clustered index sql?

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How delete all records from table in sql?

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List different type of expressions with the example.

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Explain the order of sql statement execution?

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