Introduction to SQL The SELECT statement SELECT 'Hi' FROM DUAL WHERE NULL = NULL; Outputs TRUE Nothing Hi FLASE TRUE Nothing Hi FLASE 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? 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 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 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 All of these 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 COUNT(r1.bid) > r2.bid ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL The HAVING clause does which of the following? Acts like a WHERE clause but is used for columns rather than groups. Acts EXACTLY like a WHERE clause. Acts like a WHERE clause but is used for rows rather than columns. Acts like a WHERE clause but is used for groups rather than rows. Acts like a WHERE clause but is used for columns rather than groups. Acts EXACTLY like a WHERE clause. Acts like a WHERE clause but is used for rows rather than columns. Acts like a WHERE clause but is used for groups rather than rows. ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Which one of the following sorts rows in SQL? ORDER BY ALIGN BY SORT BY GROUP BY ORDER BY ALIGN BY SORT BY GROUP BY ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Find all the cities whose humidity is 89 SELECT city FROM weather; SELECT city FROM weather WHERE humidity = 89; SELECT city WHERE humidity = 89; SELECT humidity = 89 FROM weather; SELECT city FROM weather; SELECT city FROM weather WHERE humidity = 89; SELECT city WHERE humidity = 89; SELECT humidity = 89 FROM weather; ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL The Microsoft Access wildcards are ____ and ____ . percent sign (%); underscore (_) question mark (?); asterisk (*) asterisk (*); percent sign (%) underscore(_); question mark (?) percent sign (%); underscore (_) question mark (?); asterisk (*) asterisk (*); percent sign (%) underscore(_); question mark (?) ANSWER DOWNLOAD EXAMIANS APP
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