A. To limit the output of a query
B. To limit the output of a query using an aggregate function only
C. When GROUP by is used
D. both b and c above
Which of the following ways below are the correct way to get the current date?
User() fucntion returns the current users user name and ___________
On executing DELETE command, if you get an error "foreign key constraint" what does it imply?
Can DISTINCT command be used for more than one column?
What is a candidate key?