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

Question

何时

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，不能执行select *，因为列p_id将与表定义重复

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;