删除UNION Result Mysql中的重复项

Question

我有一些表，我使用UNION创建查询以将表连接到一个表。 但我有一些问题，结果有重复的值。

以下是我的UNION的结果：

这是我的查询：

SELECT * FROM (
SELECT d.type, d.is_delete, a.CUSTOMER_ID, a.ANI, a.FULL_NAME, a.ALAMAT, 
a.CITY, a.PROVINCE_DESC, a.ZIP_CODE, a.PSTN, a.MOBILE, a.EMAIL, 
b.location_id, c.INSTALL_ADDR, c.PSTN as UPD_PSTN, c.MOBILE as UPD_MOBILE 
FROM dailybussolbackup.daily_bussol_20150101 a 
LEFT JOIN collectionticket.ticket_location_kcp b ON a.CUSTOMER_ID = b.CUSTOMER_ID 
LEFT JOIN collectionticket.ticket_customers c ON a.CUSTOMER_ID = c.CUSTOMER_ID 
LEFT JOIN ticket_schedule_complaint d ON d.customer_id = a.CUSTOMER_ID
WHERE b.location_id = '3'
      UNION
SELECT d.type, d.is_delete, a.CUSTOMER_ID, a.ANI, a.FULL_NAME, a.ALAMAT, 
a.CITY, a.PROVINCE_DESC, a.ZIP_CODE, a.PSTN, a.MOBILE, a.EMAIL, 
b.location_id, c.INSTALL_ADDR, c.PSTN as UPD_PSTN, c.MOBILE as UPD_MOBILE 
FROM dailybussolbackup.daily_bussol_20150101 a 
LEFT JOIN collectionticket.ticket_location_kcp b ON a.CUSTOMER_ID = b.CUSTOMER_ID 
LEFT JOIN collectionticket.ticket_customers c ON a.CUSTOMER_ID = c.CUSTOMER_ID 
LEFT JOIN ticket_schedule_detail d ON d.cust_id = a.CUSTOMER_ID
LEFT JOIN ticket_schedule e ON e.id = d.schedule_id
WHERE b.location_id = '3'
) as data
WHERE data.is_delete = 'false' OR data.is_delete IS NULL;

这是我的预期结果：

删除type和is_delete列具有NULL值且重复的行。 如何清理？ 谢谢..

Answer 1

似乎其余字段就像结果集的“PK”。这将在存在时使用'type'和'is_delete'值，或在其他情况下使用null 这有点棘手（可能是一个更好的查询分析子查询内部）

SELECT 
    MAX(type) as type, MAX(is_delete) as is_delete
    CUSTOMER_ID, ANI, FULL_NAME, ALAMAT, 
    CITY, PROVINCE_DESC, ZIP_CODE, PSTN, MOBILE, EMAIL, 
    location_id, INSTALL_ADDR, UPD_PSTN, UPD_MOBILE
FROM (
    SELECT d.type, d.is_delete, a.CUSTOMER_ID, a.ANI, a.FULL_NAME, a.ALAMAT, 
    a.CITY, a.PROVINCE_DESC, a.ZIP_CODE, a.PSTN, a.MOBILE, a.EMAIL, 
    b.location_id, c.INSTALL_ADDR, c.PSTN as UPD_PSTN, c.MOBILE as UPD_MOBILE 
    FROM dailybussolbackup.daily_bussol_20150101 a 
    LEFT JOIN collectionticket.ticket_location_kcp b ON a.CUSTOMER_ID = b.CUSTOMER_ID 
    LEFT JOIN collectionticket.ticket_customers c ON a.CUSTOMER_ID = c.CUSTOMER_ID 
    LEFT JOIN ticket_schedule_complaint d ON d.customer_id = a.CUSTOMER_ID
    WHERE b.location_id = '3'
          UNION
    SELECT d.type, d.is_delete, a.CUSTOMER_ID, a.ANI, a.FULL_NAME, a.ALAMAT, 
    a.CITY, a.PROVINCE_DESC, a.ZIP_CODE, a.PSTN, a.MOBILE, a.EMAIL, 
    b.location_id, c.INSTALL_ADDR, c.PSTN as UPD_PSTN, c.MOBILE as UPD_MOBILE 
    FROM dailybussolbackup.daily_bussol_20150101 a 
    LEFT JOIN collectionticket.ticket_location_kcp b ON a.CUSTOMER_ID = b.CUSTOMER_ID 
    LEFT JOIN collectionticket.ticket_customers c ON a.CUSTOMER_ID = c.CUSTOMER_ID 
    LEFT JOIN ticket_schedule_detail d ON d.cust_id = a.CUSTOMER_ID
    LEFT JOIN ticket_schedule e ON e.id = d.schedule_id
    WHERE b.location_id = '3'
) as data
GROUP BY
    CUSTOMER_ID, ANI, FULL_NAME, ALAMAT, 
    CITY, PROVINCE_DESC, ZIP_CODE, PSTN, MOBILE, EMAIL, 
    location_id, INSTALL_ADDR, UPD_PSTN, UPD_MOBILE
WHERE is_delete = 'false' OR is_delete IS NULL;