Introduction to SQL 'AS' clause is used in SQL for Projection operation. Join operation. Rename operation. Selection operation. Projection operation. Join operation. Rename operation. Selection operation. ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Which of the following query finds the names of the sailors who have reserved at least one boat? 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; None of These SELECT s.sname FROM sailors s, reserves r WHERE s.sid = r.sid; 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; None of These SELECT s.sname FROM sailors s, reserves r WHERE s.sid = r.sid; ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL If a query involves NOT, AND, OR with no parenthesis NOT will be evaluated first; OR will be evaluated second; AND will be evaluated last. NOT will be evaluated first; AND will be evaluated second; OR will be evaluated last. The order of occurrence determines the order of evaluation. AND will be evaluated first; OR will be evaluated second; NOT will be evaluated last. NOT will be evaluated first; OR will be evaluated second; AND will be evaluated last. NOT will be evaluated first; AND will be evaluated second; OR will be evaluated last. The order of occurrence determines the order of evaluation. AND will be evaluated first; OR will be evaluated second; NOT will be evaluated last. ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL The SQL -92 wildcards are ____ and ____ . percent sign (%); underscore (_) underscore(_); question mark (?) question mark (?); asterisk (*) asterisk (*); percent sign (%) percent sign (%); underscore (_) underscore(_); question mark (?) question mark (?); asterisk (*) asterisk (*); percent sign (%) ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL The SQL statement that queries or reads data from a table is ________ . SELECT READ None of these QUERY SELECT READ None of these QUERY ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL The format SELECT-FROM-WHERE is the fundamental framework of SQL SELECT statements. True False True False ANSWER DOWNLOAD EXAMIANS APP
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