有沒有任何方法可以獲得正確的條件？ MYSQL中的兩個選項都未能達到預期結果

Question

SELECT cstmr_type FROM add_vehicle
WHERE cstmr_type = 'Visitor' AND cstmr_type = 'Hospital';

SELECT cstmr_type FROM add_vehicle
WHERE cstmr_type = 'Visitor' & 'Hospital';

Answer 1

嘗試使用IN關鍵字

SELECT cstmr_type FROM add_vehicle WHERE cstmr_type IN ('访客', '医院')