SQL多處Where Statements not working

Question

它是一個語法錯誤嗎？

SELECT MEAL_TIMEOFDAY,MEAL_NAME FROM APP.MEAL 

WHERE MEAL_TYPE   = ('Cardio') 
WHERE MEAL_TIMEOFDAY = ('Breakfast') 

我只需要得到是早餐的心臟餐。

Answer 1

替換第二，其中以 「OR」

Answer 2

嘗試使用下面和上面將無法工作：

SELECT MEAL_TIMEOFDAY,MEAL_NAME FROM APP.MEAL -- This will work for the condition you provided 
WHERE MEAL_TYPE = 'Cardio' AND MEAL_TIMEOFDAY = 'Breakfast' 

或者乾脆：

SELECT MEAL_TIMEOFDAY,MEAL_NAME FROM APP.MEAL -- This is a sample with OR 
WHERE MEAL_TYPE = 'Cardio' OR MEAL_TIMEOFDAY = 'Breakfast' 

Answer 3

SQL查詢結構如下圖所示：

SELECT [columns] FROM [table name] 
    WHERE [condition one] 
    AND [condition 2] 

Answer 4

如果您的SQL WHERE clause中有多個條件，則必須使用logical operators,：

SELECT MEAL_TIMEOFDAY 
    , MEAL_NAME 
FROM APP.MEAL 
WHERE MEAL_TYPE = 'Cardio' 
    AND MEAL_TIMEOFDAY = 'Breakfast'