Interested to Buy Any Domain ? << Click Here >> for more details...
Do most hackers use linux?
Discuss the importance of materials selection in aeronautical engineering and how it impacts aircraft performance.
Did bill gates invent excel?
How do I create categories in wordpress?
Can S3 be used with EC2 instances, if yes, how?
What does a cics translator do?
What is the importance of database in an organization?
What is an alias in tableau?
How To Make Decisions And Solve Problems?
How many stars are there, which are normally visible?
What is interface? Why it is used?
what the 'lov of validation' property of an item? Mention what is the difference between lov and list item?
what is the difference b/w absolute encoder and incremental encoder?
Explain the hadoop-core configuration?
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.
