Introduction to SQL Which of the following must be enclosed in double quotes? All of these Column Alias Dates Strings All of these Column Alias Dates Strings ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Which of the following query finds the name of the sailors who have reserved at least two boats? All of these SELECT DISTINCT s.sname FROM sailors s, reserves r1, reserves r2 WHERE s.sid = r1.sid AND COUNT(r1.bid) > r2.bid SELECT DISTINCT s.sname FROM sailors s, reserves r1, reserves r2 WHERE s.sid = r1.sid AND r1.sid = r2.sid AND r1.bid <> r2.bid SELECT DISTINCT s.sname FROM sailors s, reserves r1, reserves r2 WHERE s.sid = r1.sid AND r1.sid = r2.sid AND r1.bid ≠ r2.bid All of these SELECT DISTINCT s.sname FROM sailors s, reserves r1, reserves r2 WHERE s.sid = r1.sid AND COUNT(r1.bid) > r2.bid SELECT DISTINCT s.sname FROM sailors s, reserves r1, reserves r2 WHERE s.sid = r1.sid AND r1.sid = r2.sid AND r1.bid <> r2.bid SELECT DISTINCT s.sname FROM sailors s, reserves r1, reserves r2 WHERE s.sid = r1.sid AND r1.sid = r2.sid AND r1.bid ≠ r2.bid ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL The SQL statementSELECT SUBSTR('123456789', INSTR('abcabcabc', 'b'), 4) FROM DUAL; 2345 1234 456789 6789 2345 1234 456789 6789 ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Find the name of cities with all entries whose temperature is in the range of 71 and 89 SELECT * FROM weather WHERE temperature NOT IN (71 to 89); SELECT * FROM weather WHERE temperature BETWEEN 71 AND 89; SELECT * FROM weather WHERE temperature NOT BETWEEN 71 to 89; SELECT * FROM weather WHERE temperature NOT IN (71 and 89); SELECT * FROM weather WHERE temperature NOT IN (71 to 89); SELECT * FROM weather WHERE temperature BETWEEN 71 AND 89; SELECT * FROM weather WHERE temperature NOT BETWEEN 71 to 89; SELECT * FROM weather WHERE temperature NOT IN (71 and 89); ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL A dynamic view is one whose contents materialize when referenced. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL The SQL keyword GROUP BY instructs the DBMS to group together those rows that have the same value in a column. False True False True ANSWER DOWNLOAD EXAMIANS APP
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