Mysql的選擇查詢問題

Question

我使用這下面給出的查詢：

SELECT o.orders_id, o.customers_name, o.customers_id, o.payment_method, o.google_order_id, o.date_purchased, o.last_modified, o.currency, o.currency_value, s.orders_status_name 
FROM orders o, orders_status s, customers c 
WHERE o.customers_id = c.customers_id 
AND o.orders_status = s.orders_status_id 
AND c.customers_firstname = Nisha 
OR c.customers_lastname = Nisha 
OR c.customers_email_address = Nisha 
OR c.customers_telephone = Nisha 

，這讓我錯誤爲：#1054 - Unknown column 'Nisha' in 'where clause'

Y是這樣嗎？有人能指導我解決這個問題嗎？

Answer 1

它看起來像你只需要附上尼莎引號：'Nisha'

... 
AND c.customers_firstname = 'Nisha' 
OR c.customers_lastname = 'Nisha' 
OR c.customers_email_address = 'Nisha' 
OR c.customers_telephone = 'Nisha' 

此外，雖然沒有涉及到這個錯誤，請注意，你應該組在括號中WHERE條件AND/OR條件：

WHERE ( o.customers_id = c.customers_id AND 
     o.orders_status = s.orders_status_id 
    ) AND 
     (
     c.customers_firstname = 'Nisha' OR 
     c.customers_lastname = 'Nisha' OR 
     c.customers_email_address = 'Nisha' OR 
     c.customers_telephone = 'Nisha' 
    )