Hive WITH clause example with the SELECT statement

博客介绍了Hive中WITH子句在SELECT语句的示例,还提及在INSERT语句中也可使用WITH子句,并给出了插入数据到表时使用该子句的情况。

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Hive WITH clause example with the SELECT statement

WITH t1 as (SELECT 1), 
t2 as (SELECT 2),
t3 as (SELECT 3)
SELECT * from t1 
UNION ALL
SELECT * from t2
UNION ALL 
SELECT * from t3;

Hive WITH Clause in INSERT Statements

You can use the WITH clause while inserting data to table. For example:

WITH t11 as (SELECT 10),
t12 as (SELECT 20),
t13 as (SELECT 3) 
INSERT INTO t1 
SELECT * from t11 
UNION ALL 
SELECT * from t12 
UNION ALL 
SELECT * from t13;

 

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