Question

我想更新表的记录并基于其他表中的外键..

Update table1 t1
Inner join  table2  t2 on t2.id = t1. Id 
Set t1. Name ='abc'
Where t2. User ='xyz';

Answer 1

该语法在Oracle使用MERGE

时无效

MERGE INTO table2 trg 
using table1 src 
ON (trg.id = src.id 
   AND trg.user = 'xyz') 
WHEN matched THEN 
  UPDATE SET trg.NAME = 'abc';

Answer 2

您也可以使用Exists

Update table1
Set Name ='abc'
Where exists (select 1 
                from table2  t2 
               where t2.id = table1.Id 
                 and t2.User ='xyz');

Answer 3

您可以使用此查询

MERGE INTO table1 t1
    USING table2  t2
     ON (t1.id = t2.id and t2.User='xyz') 
    WHEN MATCHED THEN
update 
set t1.Name = 'abc';

使用其他表

3 个答案: