SELECT employee_id, first_name, last_name, job_idFROM employeesWHERE job_id = (SELECT job_id FROM employees WHERE employee_id < 210);While executing, the above query will throw an error.Choose the query that will not throw any erro
Question
SELECT employee_id, first_name, last_name, job_idFROM employeesWHERE job_id = (SELECT job_id FROM employees WHERE employee_id < 210);While executing, the above query will throw an error.Choose the query that will not throw any erro
Solution
The query you provided may throw an error because the subquery can return more than one row, which is not allowed in this context. A correct version of the query could be:
SELECT employee_id, first_name, last_name, job_id
FROM employees
WHERE job_id IN (SELECT job_id FROM employees WHERE employee_id < 210);
This version uses the IN keyword instead of the equals operator, which allows the subquery to return multiple rows.
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