InfyTQ Subquery Quiz 3

The with clause provides a way of defining a temporary relation whose definition is available only to the query in which the with clause occurs.

 To include aggregate functions having clause must be included after where.

SELECT name, salary, avg salary

            FROM instructor I1, lateral (SELECT avg(salary) AS avg salary

            FROM instructor I2

            WHERE I2.dept name= I1.dept name);

Without the lateral clause, the subquery cannot access the correlation variable

I1 from the outer query.

 With clause creates a temporary relation.

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With is used to create temporary relation and its not an aggregate function.

EXISTS keyword checks for existence of a condition

Currently there is no PrepInsta Explanation. Did you know?

You can also submit your own version of explanations under user explanation section and also view other submitted explanations by other users.

To sort the salary from highest to lowest amount and display the employee's name alphabetically, one can use the "Desc and Asc" in the above-given Query.

The "SQL" contains a comparison known as the "BETWEEN," which is also used in one of the given queries, as you can see. The "BETWEEN" operator is generally used to simplify the "WHERE" clause that is used to specify that the value is greater than one value or greater than some values, less than one or more values.