Introduction to SQL SELECT DISTINCT is used if a user wishes to see duplicate columns in a query. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Which of the following query finds the total rating of the sailors who have reserved boat "103"? SELECT s.rating FROM sailors s, reserves r WHERE s.sid = r.sid AND r.bid = 103 SELECT SUM(s.rating) FROM sailors s, reserves r WHERE s.sid = r.sid AND r.bid = 103 SELECT SUM(s.rating) FROM sailors s, reserves r AND r.bid = 103; c) SELECT COUNT(s.rating) FROM sailors s, reserves r WHERE s.sid = r.sid AND r.bid = 103 SELECT s.rating FROM sailors s, reserves r WHERE s.sid = r.sid AND r.bid = 103 SELECT SUM(s.rating) FROM sailors s, reserves r WHERE s.sid = r.sid AND r.bid = 103 SELECT SUM(s.rating) FROM sailors s, reserves r AND r.bid = 103; c) SELECT COUNT(s.rating) FROM sailors s, reserves r WHERE s.sid = r.sid AND r.bid = 103 ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL What does the following query find?(SELECT DISTINCT r.sidFROM boats b, reserves rWHERE b.bid = r.bidAND b.color = 'red')MINUS(SELECT DISTINCT r.sidFROM boats b, reserves rWHERE b.bid = r.bidAND b.color = 'green') Find the sailor Ids of atmost one sailor who have reserved red boats but not green boats Find the sailor IDs of at least one sailor who have reserved red boats but not green boats None of These Find the sailor IDs of all sailors who have reserved red boats but not green boats Find the sailor Ids of atmost one sailor who have reserved red boats but not green boats Find the sailor IDs of at least one sailor who have reserved red boats but not green boats None of These Find the sailor IDs of all sailors who have reserved red boats but not green boats ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL What is the meaning of LIKE '%0%0%' Feature has more than two 0's Feature begins with two 0's Feature ends with two 0's Feature has two 0's in it, at any position Feature has more than two 0's Feature begins with two 0's Feature ends with two 0's Feature has two 0's in it, at any position ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL In SQL, which of the following is not a data definition language commands? GRANT UPDATE RENAME REVOKE GRANT UPDATE RENAME REVOKE ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL ............. joins two or more tables based on a specified column value not equaling a specified column value in another table. OUTER JOIN EQUIJOIN NATURAL JOIN NON-EQUIJOIN OUTER JOIN EQUIJOIN NATURAL JOIN NON-EQUIJOIN ANSWER DOWNLOAD EXAMIANS APP
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