Question: What are the ids of the problems reported before the date of any problem reported by Lysanne Turcotte?
Schema: create table problems (problem_id varchar, reported_by_staff_id varchar, PRIMARY KEY (problem_id)); create table staff (staff_id varchar, staff_first_name varchar, staff_last_name varchar, PRIMARY KEY (staff_id)); create table problems (reported_by_staff_id varchar, PRIMARY KEY (reported_by_staff_id)); create table staff (staff_id varchar, PRIMARY KEY (staff_id))
SQL: select t1.problem_id from problems as t1 join staff as t2 on t1.reported_by_staff_id = t2.staff_id where date_problem_reported < (select min(date_problem_reported) from problems as t3 join staff as t4 on t3.reported_by_staff_id = t4.staff_id where t4.staff_first_name = "lysanne" and t4.staff_last_name = "turcotte")