Introduction to SQL Which of the following group functions ignore NULL values? SUM MAX COUNT All of these SUM MAX COUNT All of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL The SQL -92 wildcards are ____ and ____ . question mark (?); asterisk (*) asterisk (*); percent sign (%) underscore(_); question mark (?) percent sign (%); underscore (_) question mark (?); asterisk (*) asterisk (*); percent sign (%) underscore(_); question mark (?) percent sign (%); underscore (_) ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL SUM, AVG, MIN, and MAX can only be used with numeric columns. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL SQL can be used to: query database data only. All of these create database structures only. modify database data only. query database data only. All of these create database structures only. modify database data only. ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL There is an equivalent join expression that can be substituted for all subquery expressions. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL The qualifier DISTINCT must be used in an SQL statement when we want to eliminate duplicate rows. True False True False ANSWER DOWNLOAD EXAMIANS APP
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