+--------------+---------+ | Column Name | Type | +--------------+---------+ | patient_id | int | | patient_name | varchar | | conditions | varchar | +--------------+---------+ patient_id is the primary key for this table. 'conditions' contains 0 or more code separated by spaces. This table contains information of the patients in the hospital.
有型一糖尿病的病人,他們的病症裡一定會有以 DIAB1 開頭的病症。
Example 1:
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Input: Patients table: +------------+--------------+--------------+ | patient_id | patient_name | conditions | +------------+--------------+--------------+ | 1 | Daniel | YFEV COUGH | | 2 | Alice | | | 3 | Bob | DIAB100 MYOP | | 4 | George | ACNE DIAB100 | | 5 | Alain | DIAB201 | +------------+--------------+--------------+ Output: +------------+--------------+--------------+ | patient_id | patient_name | conditions | +------------+--------------+--------------+ | 3 | Bob | DIAB100 MYOP | | 4 | George | ACNE DIAB100 | +------------+--------------+--------------+ Explanation: Bob and George both have a condition that starts with DIAB1.
筆記
這題還滿無腦的,兩種狀況
DIAB1 在中間,那他就會是 DIAB1 的形式,前後再加上 % 就可以捕捉這類狀況
DIAB1 在最前面,換句話說前面會沒有空格,於是我們用 DIAB1% 來捕捉這類情況
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SELECT*FROM Patients WHERE conditions like'% DIAB1%' OR conditions like'DIAB1%'