Introduction to SQL
The SQL -92 wildcards are ____ and ____ .

underscore(_); question mark (?)
question mark (?); asterisk (*)
percent sign (%); underscore (_)
asterisk (*); percent sign (%)

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Introduction to SQL
Which of the following query finds the names of the sailors who have reserved at least one boat?

SELECT s.sname FROM sailors s, reserves r WHERE s.sid = r.sid;
None of These
SELECT DISTINCT s.sname FROM sailors s, reserves r WHERE s.sid = r.sid;
SELECT DISTINCT s.sname FROM sailors, reserves WHERE s.sid = r.sid;

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