编译语句时出错：FAILED：SemanticException [错误10036]：重复的列名称：p_id

Question

当

SELECT * from hospital_basic 
LEFT JOIN hospital_clinical on hospital_basic.p_id=hospital_clinical.p_id;

它工作正常，但在创建视图时出现错误

CREATE VIEW hospital_view AS
SELECT * from hospital_basic LEFT JOIN 
hospital_clinical on hospital_basic.p_id=hospital_clinical.p_id;

Answer 1

您需要为您选择的列添加别名，但您不能这样做

select *

，因为列 p_id 将在表定义中重复

CREATE VIEW hospital_view AS 
SELECT 
hospital_basic.p_id as hospital_basic_p_id,
hospital_clinical.p_id as hospital_clinical_p_id,
other columns   ...
from hospital_basic LEFT JOIN hospital_clinical on hospital_basic.p_id=hospital_clinical.p_id;

Answer 2

请帮我解决这个问题

hive> 创建表示例 > AS > SELECT a.stock_symbol, b.stock_symbol, Month(a.stock_date), (AVG(a.stock_price_high*b.stock_price_high)-(AVG(a.stock_price_high)*AVG(b.stock_price_high))) FROM nyse a JOIN nyse b ON (a.stock_date=b.stock_date) WHERE a.stock_symbol

失败：SemanticException [错误 10036]：重复的列名称：stock_symbol