Question

我有两个表，company_info和comp_orders

我运行以下查询：

$sql = "Update s1 SET s1.Comp_Addr = s2.Comp_Addr 
        Where s1.Comp_Name=s2.Comp_Name AND 
        s1.ID_No='$id' FROM comp_orders s1 , company_info s2";

但它不起作用。返回的错误是

＆＃34;您的SQL语法出错了;检查手册对应于您的MySQL服务器版本，以便使用正确的语法靠近＆＃39; FROM comp_orders s1，company_info s2＆＃39;在第1行＆＃34;

Answer 1

你应该JOIN这两个表如下：

Update comp_orders s1
INNER JOIN  company_info s2 ON s1.Comp_Name=s2.Comp_Name 
SET s1.Comp_Addr = s2.Comp_Addr 
[Where ...] --optional perediate

Answer 2

UPDATE comp_orders s1
INNER JOIN company_info s2 on s1.Comp_Name=s2.Comp_Name
SET s1.Comp_Addr = s2.Comp_Addr 
WHERE s1.ID_No = '$id'

simplified SQL fiddle example

Answer 3

您无法在FROM

中使用update

查询应该是

$sql = "Update s1 SET s1.Comp_Addr = s2.Comp_Addr Where s1.Comp_Name=s2.Comp_Name AND s1.ID_No='$id'";

Answer 4

您似乎错误地更新了查询。我认为以下内容应该有效：

$sql = "
    Update comp_orders s1, company_info s2 SET 
        s1.Comp_Addr = s2.Comp_Addr 
        Where s1.Comp_Name=s2.Comp_Name AND s1.ID_No='$id'";

Answer 5

$sql = "Update s1 SET s1.Comp_Addr = s2.Comp_Addr Where s1.Comp_Name=s2.Comp_Name AND s1.ID_No='$id' FROM comp_orders.s1 , company_info.s2";

试试这个，你错过了点......

还有其他错误 - 查找updates

Answer 6

UPDATE … FROM？这是哪种SQL方言？我以前从未见过它。

MySQL FROM中没有UPDATE条款：http://dev.mysql.com/doc/refman/5.0/en/update.html

Answer 7

如果您尝试以下操作该怎么办：

UPDATE comp_orders s1, company_info s2
SET s1.Comp_Addr = s2.Comp_Addr 
WHERE s1.Comp_Name = s2.Comp_Name 
AND s1.ID_No='$id'

Answer 8

TRY

UPDATE comp_orders s1
INNER JOIN company_info s2 USING(`Comp_Name`)
SET s1.Comp_Addr = s2.Comp_Addr 
WHERE s1.ID_No = '$id'

或

UPDATE comp_orders s1 company_info s2 
SET s1.Comp_Addr = s2.Comp_Addr 
WHERE s1.ID_No='$id'

Reference

从两个表更新但失败了

8 个答案: