HiveQL 中插入命令内的多个查询

Question

在我的用例中，我需要做这样的事情，

INSERT INTO TABLE test 
  select
      count(*) where recordedValue < 0,
      count(*) where recordedValue > 0 and recordedValue < 10,
      count(*) where recordedValue > 10 and recordedValue < 20
   from sample

这样可以吗？

Answer 1

INSERT INTO TABLE test 
select count(col1), count(col2), count(col3) From (
select 
CASE WHEN recordedValue < 0 THEN recordedValue END as col1,
CASE WHEN recordedValue > 0 AND recordedValue < 10 THEN recordedValue END as col2,
CASE WHEN recordedValue > 10 AND recordedValue < 20 THEN recordedValue END as col3 
from sample ) a;

首先检查select语句；

HiveQL 中插入命令内的多个查询

Multiple queries inside Insert command in HiveQL

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