Php Mysql:完整性约束冲突：1052，列。。。是模棱两可的，但似乎不是

mysql请求有问题。 特别是一个看起来像

supplier.name AS supplier_id ,

导致1052错误-订单条款中的1052列“供应商id”不明确，但代码如下

CONCAT(supplier.name) AS supplier_id ,

工作正常，没有错误。为什么?

完整工作sql：

SELECT
supplier_contract.*,
CONCAT('', status.name, '') as status_id ,
CONCAT(supplier.name) AS supplier_id ,
CONCAT(currency.name) AS currency_id ,
CONCAT(incoterms.name) AS incoterms_id
    from supplier_contract
LEFT OUTER JOIN status ON supplier_contract.status_id = status.id
LEFT OUTER JOIN supplier ON supplier_contract.supplier_id = supplier.id
LEFT OUTER JOIN currency ON supplier_contract.currency_id = currency.id
LEFT OUTER JOIN incoterms ON supplier_contract.incoterms_id = incoterms.id
ORDER BY name DESC, supplier_id DESC
LIMIT 0, 26

SELECT
supplier_contract.*,
CONCAT('', status.name, '') as status_id ,
supplier.name AS supplier_id ,
currency.name AS currency_id ,
incoterms.name AS incoterms_id
    from supplier_contract
LEFT OUTER JOIN status ON supplier_contract.status_id = status.id
LEFT OUTER JOIN supplier ON supplier_contract.supplier_id = supplier.id
LEFT OUTER JOIN currency ON supplier_contract.currency_id = currency.id
LEFT OUTER JOIN incoterms ON supplier_contract.incoterms_id = incoterms.id
ORDER BY name DESC, supplier_id DESC
LIMIT 0, 26

sql不工作：

SELECT
supplier_contract.*,
CONCAT('', status.name, '') as status_id ,
CONCAT(supplier.name) AS supplier_id ,
CONCAT(currency.name) AS currency_id ,
CONCAT(incoterms.name) AS incoterms_id
    from supplier_contract
LEFT OUTER JOIN status ON supplier_contract.status_id = status.id
LEFT OUTER JOIN supplier ON supplier_contract.supplier_id = supplier.id
LEFT OUTER JOIN currency ON supplier_contract.currency_id = currency.id
LEFT OUTER JOIN incoterms ON supplier_contract.incoterms_id = incoterms.id
ORDER BY name DESC, supplier_id DESC
LIMIT 0, 26

SELECT
supplier_contract.*,
CONCAT('', status.name, '') as status_id ,
supplier.name AS supplier_id ,
currency.name AS currency_id ,
incoterms.name AS incoterms_id
    from supplier_contract
LEFT OUTER JOIN status ON supplier_contract.status_id = status.id
LEFT OUTER JOIN supplier ON supplier_contract.supplier_id = supplier.id
LEFT OUTER JOIN currency ON supplier_contract.currency_id = currency.id
LEFT OUTER JOIN incoterms ON supplier_contract.incoterms_id = incoterms.id
ORDER BY name DESC, supplier_id DESC
LIMIT 0, 26

错误消息：

---

致命错误：未捕获异常“PDOException”，消息为“SQLSTATE[23000]：完整性约束冲突：在C:\wamp\www\stream\classes\class.DBMethods.inc:15堆栈跟踪：#0 C:\wamp\www\stream\classes\class.DBMethods.inc（15）：PDO->prepare（'SELECT supplier…'））#1c:\wamp\www\stream\classes\class.TableGen.inc（20）：DBMethods:：selectBySql（'selectsupplier…'）#2c:\wamp\www\stream\classes\class.TableGen.inc（218）：TableGen->getRecords（）#3c:\wamp\www\stream\index.php（82）：TableGen->viewRecords（）#4{main}在第15行的C:\wamp\www\stream\classes\class.DBMethods.inc中抛出

使用别名/表名作为

supplier\u id

的特定引用的前缀，只需将表前缀添加到

ORDER BY

条款中的所有字段中，该列是不明确的，因为您有

supplier\u合同。*

其中包含

supplier\u id

等等。可能是MySQL的错误。你有两个供应商id的表。

concat

以某种方式清理了它。使用别名alwayssupplier.name作为供应商id。别名supplier id本身是供应商合同表的一个字段。这就是为什么这两个领域之间会发生冲突。请提供唯一的别名并尝试使用它。