Introduction to SQL
Which of the following query is correct for using comparison operators in SQL?

SELECT name, course_name FROM student WHERE age>50 and age <80;
SELECT name, course_name FROM student WHERE age>50 and <80;
SELECT name, course_name FROM student WHERE age>50 and WHERE age<80;
None of these

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Introduction to SQL
The HAVING clause does which of the following?

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 columns rather than groups.
Acts like a WHERE clause but is used for groups rather than rows.

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