Question

mysql请求有问题。特别是，一个看起来像

的部分

supplier.name AS supplier_id ,

导致1052错误 - 1052订单子句中的'supplier_id'列不明确'，但代码如

CONCAT(supplier.name) AS supplier_id ,

工作正常，没有错误。为什么呢？

完整的工作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

不工作sql：

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

错误讯息：致命错误：未捕获异常'PDOException'，消息'SQLSTATE [23000]：完整性约束违规：1052列''supplier_id'在订单子句中的含义不明确'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-＆gt; prepare（'SELECT supplier ...'）＃1 C：\ wamp \ www \ stream \ classes \ class.TableGen.inc（20）：DBMethods :: selectBySql（'SELECT supplier ...'）＃2 C：\ wamp \ www \ stream \ classes \ class.TableGen.inc（218）：TableGen-＆gt; getRecords（）＃3 C：\ wamp \ www \ stream \ index.php（82）：TableGen-＆gt; viewRecords（）＃4 {main}抛出C：\ wamp \ www \ stream \ classes \ class.DBMethods。第15行的公司

Mysql：完整性约束违规：1052，列......含糊不清 - 但不是

0 个答案: