题目内容
(请给出正确答案)
[单选题]
The publishers planned to produce the journal on a monthly().
A.foundation
B.calendar
C.schedule
D.basis
答案
查看答案
A.foundation
B.calendar
C.schedule
D.basis
第1题
Question 7: Can you tell me what the difference of two SQL statements at
performance of execution?
Statement 1:
if NOT EXISTS (select * from publishers where state = 'NY')
begin
SELECT 'Sales force needs to penetrate New York market'end
else
begin
SELECT 'We have publishers in New York'
end
Statement 2:
if EXISTS (select * from publishers where state = 'NY')
begin
SELECT 'We have publishers in New York'
end
else
begin
SELECT 'Sales force needs to penetrate New York market'
end