Hive：具有单个子查询的多个 In-elements

Question

我试图运行在配置单元（版本 1.2.1）上进行这样的查询：

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

但是由于配置单元不支持这种构造，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 ;

但是 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

Error Message : Grammatically incorrect SQL Query :]; nested exception is org.apache.hive.service.cli.HiveSQLException: Error while compiling statement: FAILED: SemanticException [Error 10249]: Line 1:185 Unsupported SubQuery Expression 'name': Only 1 SubQuery expression is supported.

处理这个问题最有效的方法是什么。

Answer 1

您可以尝试关注

through EXISTS 我不确定 HIVE 是否支持这种子查询形式。

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 ;

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 ;

Hive：具有单个子查询的多个 In-elements

Hive : Multiple In-elements with single subquery

hive

subquery

in-subquery