SELECT T3.area_code FROM contestants AS T1 JOIN votes AS T2 ON T1.contestant_number = T2.contestant_number JOIN area_code_state AS T3 ON T2.state = T3.state WHERE T1.contestant_name = 'Tabatha Gehling' INTERSECT SELECT T3.area_code FROM contestants AS T1 JOIN votes AS T2 ON T1.contestant_number = T2.contestant_number JOIN area_code_state AS T3 ON T2.state = T3.state WHERE T1.contestant_name = 'Kelly Clauss'
Sebutkan kode area di mana pemilih memilih untuk kontestan 'Tabatha Gehling' dan kontestan 'Kelly Clauss'.
CREATE TABLE votes (contestant_number VARCHAR, state VARCHAR); CREATE TABLE contestants (contestant_number VARCHAR, contestant_name VARCHAR); CREATE TABLE area_code_state (area_code VARCHAR, state VARCHAR)