删除查询错误消息“无法从指定表中删除" [英] Delete query error message "cant delete from specified tables"

问题描述

我正在尝试针对本地 Access 表运行此删除查询，但收到错误消息

I am trying to run this delete query against a local Access tables, but I get error message

无法从指定表中删除

请提供正确的 SQL 以进行复制和粘贴.

Please provide me the proper SQL to copy and paste.

非常感谢你，纳撒尼尔

DELETE RO.*, RO.STATUS, CO.ID, CO.PRINTED_DATE
FROM tmpReleasedOrders AS RO 
LEFT JOIN SYSADM_CUSTOMER_ORDER AS CO ON RO.orderID = CO.ID
WHERE (((RO.STATUS)="C" Or (RO.STATUS)="X")) OR (((CO.ID) Is Null)) OR (((CO.PRINTED_DATE) Is Null));

推荐答案

此查询依赖于 SYSADM_CUSTOMER_ORDER 在 ID 上具有唯一索引.

This query depends on SYSADM_CUSTOMER_ORDER having a unique index on ID.

DELETE ro.*
FROM tmpReleasedOrders AS ro
LEFT JOIN SYSADM_CUSTOMER_ORDER AS CO 
ON RO.orderID = CO.ID
WHERE RO.STATUS="C" Or RO.STATUS="X" OR CO.ID Is Null OR CO.PRINTED_DATE Is Null

如果您在 SYSADM_CUSTOMER_ORDER 上没有索引，您可以在这些行上使用一些东西:

If you do not have an index on SYSADM_CUSTOMER_ORDER, you can use something on these lines:

DELETE tmpreleasedorders.*
FROM tmpreleasedorders
WHERE  status IN ( "c", "x" )
OR orderid IN (
   SELECT orderid
   FROM   tmpreleasedorders AS ro
   LEFT JOIN sysadm_customer_order AS CO
   ON RO.orderid = CO.id
   WHERE  CO.id IS NULL
   OR CO.printed_date IS NULL) 

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