SAS Certified Adv Programmer 50 Questions (7)
How many columns can an SQL procedure subquery within a WHERE or HAVING clause return to the outer query?
a. 0
b. 1
c. 2
d. the same number of columns that are in the table
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3 Comments »
B
?
for exists…like problem 6
does it mean it combines multiple columns into one?
“A subquery in the WHERE or HAVING clause can return values for multiple rows but only for a single column.”