Question

我有这个查询，我收到错误“操作数应该包含1列”，我的查询中有什么错误？

SELECT * FROM contact AS b WHERE b.id IN 
(
    SELECT * 
    FROM contact AS e 
    WHERE e.firstname LIKE ? 
    OR e.lastname LIKE ? 
    OR e.email LIKE ? 
    OR e.phone LIKE ? 
    OR e.company LIKE ? 
    OR e.profession LIKE ? 
    OR e.mobile LIKE ?
)

Answer 1

IN运算符需要一个与您所比较的值匹配的值列表：在您的情况下为columnb.id。所以替换这个

WHERE b.id IN (SELECT *

用这个

WHERE b.id IN (SELECT id

Answer 2

第二个选择应为SELECT id而不是SELECT *。

Answer 3

您的WHERE子句使用IN来确定哪些b.id值与您的查询相关。为了在第二个查询中使用IN，必须只返回一列。

Answer 4

SELECT * FROM

上述语句中的问题，因为您选择了多个列，

将其更改为

SELECT * FROM contact AS b WHERE b.id IN (SELECT e.ID FROM contact AS e WHERE e.firstname 
LIKE ? OR e.lastname LIKE ? OR e.email LIKE ? OR e.phone LIKE ? OR e.company LIKE ? OR 
e.profession LIKE ? OR e.mobile LIKE ?)

Answer 5

    SELECT * FROM contact AS b WHERE b.id IN (SELECT e.Id FROM contact AS e WHERE e.firstname 
LIKE ? OR e.lastname LIKE ? OR e.email LIKE ? OR e.phone LIKE ? OR e.company LIKE ? OR 
e.profession LIKE ? OR e.mobile LIKE ?)

它应该是一个包含与SELECT * FROM contact匹配的值的列，而不是b.id。

所以，它应该是SELECT e.Id FROM contact

SQL错误：操作数应包含1列

5 个答案: