Does Amazon redshift based on concept cluster?

5

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What would be salary for 8+ years of experience in ASP.NET in different metro city in india?

2408

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SET is the ANSI standard for variable assignment, SELECT is not. SET can only assign one variable at a time, SELECT can make multiple assignments at once. If assigning from a query, SET can only assign a scalar value. If the query returns multiple values/rows then SET will raise an error. SELECT will assign one of the values to the variable and hide the fact that multiple values were returned (so you'd likely never know why something was going wrong elsewhere - have fun troubleshooting that one) When assigning from a query if there is no value returned then SET will assign NULL, where SELECT will not make the assignment at all (so the variable will not be changed from it's previous value) As far as speed differences - there are no direct differences between SET and SELECT. However SELECT's ability to make multiple assignments in one shot does give it a slight speed advantage over SET.

2596

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How reliable is tcp?

1006

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What is transient Phenomenon?

2187

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How is technology significant in the field of mechanical engineering?

1104

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What is Additive function?

1978

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what is the difference between surge protection capacitor and surge arrestor

2260

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Can you explain how long are locks retained within the repeatable_read and serializable isolation levels, during a read operation with row-level locking?

937

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What is the use of persistence layer in sap hana system?

510

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Explain spring batch architecture.

379

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How did you define service levels?

1120

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There are two classes named classa and classb. Both classes are in the same package. Can a private member of classa can be accessed by an object of classb?

1430

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The efficiency of a pin fin with insulated tip is

1731

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what do you mean by yeild stress of a material? What will happen when hit is given to cement?

2299

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