Sql 在通过引用表将数据移动到其他表时替换列的值

让我们假设我有一个名为“Table1”的表，其列和值如下所示

---------------------------
action | component | type |
---------------------------
  1    |     2    |  1    |
  2    |     3    |  3    |
  3    |     4    |  2    |
---------------------------

“表2”的结构与“表1”完全相同

现在我有另一个表“参考”，如下所示

---------------------------
description | id  | value  |
---------------------------
   action   |  2  |  create|
   action   |  1  |  delete|
   action   |  3  |  update|
  component |  2  |  c1    |
  component |  4  |  c2    |
  component |  3  |  c3    |
   type     |  2  |  t1    |
   type     |  1  |  t2    |
   type     |  3  |  t3    |
---------------------------

现在，我需要通过引用“reference”表中的值，将数据从“table1”移动到“table2”。我的结果表应该如下所示

---

---

请帮我查询同样的问题。提前感谢。

您正在寻找多个联接：

select t1a.value as action,
       t1c.value as component,
       t1t.value as type
from table2 t2 join
     table1 t1a
     on t2.action = t1a.id and t1a.description = 'action' join
     table1 t1c
     on t2.component = t1c.id and t1c.description = 'component' join
     table1 t1t
     on t2.type = t1t.id and t1t.description = 'type';

---

您可以这样做：

select 
    (select b.description from reference b where A.action = b.id and b.description = 'action') as action,
    (select c.description from reference c where A.action = c.id and c.description = 'component') as component,
    (select d.description from reference d where A.action = d.id and d.description = 'type') as type
from table_1 A

---

您使用的是哪种SQL？在发布之前你们有并没有尝试过任何东西？实际上我正在尝试这是配置单元查询，我尝试的是在选择时，我尝试用select语句替换特定的列，该语句包括join语句和引用表。但它没有发生。也许我的问题不清楚？实际上，我们需要通过引用“reference”表中的特定值，将数据从“table1”填充到“table2”。在您的回答中，您没有引用“reference”表，对吗？@CodingOwl只是名称错了。查一下最新消息，兄弟，你救了我一天。我想在hive中进行查询，这非常有效。

select 
    (select b.description from reference b where A.action = b.id and b.description = 'action') as action,
    (select c.description from reference c where A.action = c.id and c.description = 'component') as component,
    (select d.description from reference d where A.action = d.id and d.description = 'type') as type
from table_1 A