Phalcon ExecuteQuery 内部连接问题

Question

这是本机 SQL 查询，在 MySql 中有效：

SELECT a.pshdQty
FROM production_stock_header a
INNER JOIN (SELECT MAX(pshdId) AS pshdId
FROM production_stock_header
WHERE pshdAuditDelete = 'N'
) b
ON a.pshdId = b.pshdId

但是，为什么在 Phalcon 中这总是错误？

$triggerSet = $this->modelsManager->executeQuery("
                    SELECT  pshdQty
                    FROM ProductionStockHeader  
                    INNER JOIN (SELECT MAX(pshdId) AS pshdId
                    FROM ProductionStockHeader
                    WHERE ProductionStockHeader.AuditDelete = 'N'
                    ) AS b
                    ON ProductionStockHeader.pshdId = b.pshdId
                ");

Answer 1

Phalcon ORM 不提供编写此类 join 语句的方法。
我建议只运行原始 native SQL 查询你的数据库连接：

$triggerSet = $this->db->query("SELECT a.pshdQty
        FROM production_stock_header a
        INNER JOIN (SELECT MAX(pshdId) AS pshdId
            FROM production_stock_header
            WHERE pshdAuditDelete = 'N'
        ) b
        ON a.pshdId = b.pshdId")->fetch();

$this->db 指向您在服务中注册的数据库连接。

您也可以一起删除内部连接：

$triggerSet = $this->modelsManager->executeQuery("
    SELECT pshdQty
    FROM ProductionStockHeader
    WHERE AuditDelete = 'N'
    ORDER BY pshdId DESC
    LIMIT 1
");

Phalcon ExecuteQuery 内部连接问题

Phalcon ExecuteQuery inner Join issues

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