WHAT IS LIMITED REVIEW? WHY IT IS REQUIRE?

2171

What is base case scenario?

604

What is the difference between the operators ‘==‘ & ‘===‘?

942

What is a flip-flop?

1067

What is the difference between a class and a module?

5

What is spring batch joblauncher?

427

what is the difference you can make by doing your course in the country of your choice

2197

Is xhtml and xml same?

808

What are different types of classes in c#?

863

How to call a sub procedure?

1049

What is the name of the dna duplication process?

974

what are the different kinds of cash books

2022

What is a excel sheet?

609

How we can change the direction of rotation of Induction motor? Prove it using graphical

2124

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.

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