can't we use the following query to solve the problem 1

Hi Jubair! Thanks for reaching out. We need to use the dept_emp table because we use the from_date column from this table. We need to join the tables t_employees and t_dept_emp. Also, we should use the HAVING clause, because we want the result set to contain years after 1990. Please, use the solution. Hope this helps. Best, Tsvetelin

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