i have done b.sc computers,i want to go to tech support interviews,i have basic hardware knowledge,what type of questions they are asking inthis interviews,pls send me interview questions
1 8213Plz give me the details about how to introduce ourself like the conventional question that is mostly asked at MNCs...."Tell me about u r self"???
41 76502What made u to come to HSBC when there are several other org. in market like GE, DELL, etc...???
2 10410Post New HSBC Call Centre AllOther Interview Questions
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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.
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