Question

嘿伙计，所以当我指定主要选择列名称时，我的查询不会返回我的联合结果，又名

SELECT inspection_number, region, report_date, 
inspection_type AS type, customer, customer_number, shipper, po
FROM reports
JOIN (
    (

        SELECT `key`, `report_key`, `shipper`, `po`, `commodity`, `label`, `status`
        FROM `berries`
    )
    UNION (

        SELECT `key`, `report_key`, `shipper`, `po`, `commodity`, `label`, `status`
        FROM `melons`
    )
    UNION (

        SELECT `key`, `report_key`, `shipper`, `po`, `commodity`, `label`, `status`
        FROM `citrus`
    )
    UNION (

        SELECT `key`, `report_key`, `shipper`, `po`, `commodity`, `label`, `status`
        FROM `table_grapes`
    )
    UNION (

        SELECT `key`, `report_key`, `shipper`, `po`, `commodity`, `label`, `status`
        FROM `tree_fruit`
    )
    UNION (

        SELECT `key`, `report_key`, `shipper`, `po`, `commodity`, `label`, `status`
        FROM `lot`
    )
) fruits ON inspection_number = fruits.report_key
WHERE fruits.status = '0' OR fruits.status = '1'
ORDER BY report_date DESC

不会返回key，report_key，shipper，po，commodity，label或status

奇怪地跑步

SELECT *
inspection_type AS type, customer, customer_number, shipper, po
FROM reports
JOIN ( -- etc.....

威尔？我该如何解决这个问题？

Answer 1

fruits 派生表确实有提到的列，但在主要选择中你没有提到任何一个;您只需从报告中提及列inspection_number，region，report_date，inspection_type - 因此它只显示它们。

如果要包含水果列，则需要在主选择语句中指定它们

即。类似的东西：

SELECT inspection_number, region, report_date, 
inspection_type, key, report_key, shipper, po, commodity, label, status AS type, customer, customer_number, shipper, po, key, report_key, shipper, po, commodity, label, status
FROM reports
JOIN (

联合选择不显示联合结果

1 个答案: