摘要: Also, we should add one index for this query, otherwise, it will be reduce the performance   Here is a partial result set:   ItemId Sales Order Production Purchase Order 1000 -27 NULL 99 1001 -5453 NU... 阅读全文
posted @ 2010-12-31 16:08 AOT 阅读(268) 评论(0) 推荐(0) 编辑