Question

我将要用这个愚蠢的mysql语句丢失它。有人可以告诉我这句话有什么问题吗？

SELECT * FROM contacts 
INNER JOIN ind_categories ON contacts.vendor_id = ind_categories.vendor_id AND ind_categories.category_id = "retail" 
AND WHERE zipcode in ( " 93044,93041,93043 " )

Answer 1

尝试：

SELECT * FROM contacts INNER JOIN ind_categories ON contacts.vendor_id = ind_categories.vendor_id AND ind_categories.category_id = 'retail' WHERE zipcode in 
('93044','93041','93043')

你的WHERE之前不应该有一个AND，IN子句中的每个set元素都需要单独引用（如果它是一个文本列，或者如果它是一个数字列则根本不引用），并且你的引号必须是单个

Answer 2

SELECT * FROM contacts 
INNER JOIN ind_categories 
   ON contacts.vendor_id = ind_categories.vendor_id AND ind_categories.category_id = "retail" -- AND   <<< removed !
WHERE zipcode in ('93044' ,'93041' ,'93043' )   -- <<<<  changed the in clause

出了什么问题？

extra AND ：语法错误
使用双引号，其中字符串变量需要单引号
IN语句中，zipcode的各个值必须单独表示为字符串，而不是一个大字符串。

Answer 3

尝试：

SELECT * FROM contacts 
INNER JOIN ind_categories 
   ON contacts.vendor_id = ind_categories.vendor_id 
      AND ind_categories.category_id = 'retail'
WHERE zipcode IN ('93044','93041','93043')

MYSQL语句语法错误

3 个答案: