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The ________ keyword is used to access attributes of preceding tables or subqueries in the from clause.

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The ________ keyword is used to access attributes of preceding tables or subqueries in the from clause.

(a) In

(b) Lateral

(c) Having

(d) With

The question was posed to me in a job interview.

Enquiry is from Aggregation of Data topic in division Laying the Foundation of SQL Server

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The correct option is (b) Lateral

The explanation: 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.

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