Question

仅当左侧表的grp_id_num介于右侧表的beg_group和end_group之间时，我才尝试匹配这两个表

+-------------+--+
| grp_id_num  |
+-------------+--+
| XA0001      |
+-------------+--+



 +---------------------------+---------------------------+-----------------------
 | detail_lookup.beg_group  | detail_lookup.end_group  | detail_lookup.agent  
 +---------------------------+---------------------------+-----------------------+
| XA0000                    | XZ9999                    | Exchange              | 
| WW9988                    | WW9988                    | DEVINE ETHIER         | 
| P00001                    | P99999                    | SHOP                  | 
| 002359                    | 002359                    | LG                    |

我的选择查询：

select a.grp_id_num,b.beg_group,b.end_group,b.fundtype  from 
(select codesetkey  as grp_id_num from codedetail limit 10)a
left outer join
detail_lookup b
on(a.grp_id_num >= b.beg_group and a.grp_id_num <= b.end_group)

错误：

 Error: Error while compiling statement: FAILED: SemanticException [Error 10017]: Line 5:3 Both left and right aliases encountered in JOIN 'beg_group' (state=42000,code=10017)

预期结果：

 XA0001 , XA0000  ,XZ9999,Exchange

有人可以帮助我配置单元1.1吗？

Answer 1

配置单元仅支持等值连接，

您可以尝试以下查询吗？

WITH res1 AS 
( 
         SELECT   codesetkey AS grp_id_num 
         FROM     codedetail 
         ORDER BY codesetkey limit 10 -- adding order by to get the first set of 10 records 
), res2 AS 
( 
       SELECT a.grp_id_num, 
              b.beg_group, 
              b.end_group, 
              b.fundtype 
       FROM   res1 a, 
              codedetail b 
       WHERE  a.grp_id_num >= b.beg_group 
       AND    a.grp_id_num <= b.end_group) 
SELECT          codesetkey, 
                NULL, 
                , 
                NULL, 
                NULL 
FROM            res1 
LEFT OUTER JOIN res2 
ON              res1.codesetkey=res2.grp_id_num 
WHERE           res2.grp_id_num IS NULL 
UNION 
SELECT * 
FROM   res2

Hive联接是否接受等号运算符，例如小于符号

1 个答案: