Hive：具有单个子查询的多个 In-elements

Question

我试图在 hive（版本 1.2.1）上运行这样的查询：

DELETE  FROM employee as e WHERE  (e.id, e.name) IN ( SELECT emp.id, emp.name FROM employee_final  emp) AND e.sno = 120 ;

但由于 hive 不支持这种结构，所以我尝试了这个：

DELETE FROM employee WHERE 
id  IN (  SELECT emp.id  FROM employee_final AS  emp ) 
AND 
name IN ( SELECT emp.name  FROM employee_final AS  emp      )  
AND e.sno = 120 ;

但 hive 似乎有一个限制，它只支持 1 个子查询，我遇到了这样的异常

错误消息：语法不正确的 SQL 查询：]；嵌套的 异常是 org.apache.hive.service.cli.HiveSQLException: Error while 编译语句：失败：SemanticException [错误 10249]：行 1:185 不支持的子查询表达式“名称”：只有 1 个子查询 支持表达式。

处理这个问题最有效的方法是什么。

Answer 1

你可以试试关注

1. 通过 EXISTS 我不确定 HIVE 是否支持这种子查询表单。

   DELETE FROM employee as e WHERE EXISTS ( SELECT 1 FROM employee_final emp where e.id = emp.id and e.name =  emp.name ) AND e.sno = 120 ;
   

2. 通过CONCAT函数

   DELETE FROM employee as e WHERE concat (e.id, '#' ,e.name) IN ( SELECT concat (emp.id,'#' ,emp.name) FROM employee_final emp) AND e.sno = 120 ;