关于PO 和PR 的联系问题
关于PO 和PR 的联系问题 关于PO 和PR 的联系问题 以前一直想解决的就是输PO号,能购查询出来转化而来的PR 号,最开始的研究结果是:采购单找到请购单通过采购单找到请购单的过程非常麻烦: /* Formatted on 2006/03/30 14:35 (Formatter Plus v4.8.6) */SELECT pod.req_header_reference_num, prh.segment1 FROM po_headers_all poh, po_distributions_all pod, po_req_distributions_all prod, po_line_locations_all poll, po_requisition_lines_all prl, po_requisition_headers_all prhWHERE prh.requisition_header_id = prl.requisition_header_id AND prod.requisition_line_id = prl.requisition_line_id AND prod.distribution_id = pod.req_distribution_id AND poll.line_location_id = pod.line_location_id AND poll.po_header_id = poh.po_header_id AND poh.segment1 ='20500214' 涉及几个表相关联, 具体是: po_headers_all poh, -- 采购单头 po_distributions_all pod, --采购单分部 po_req_distributions_all prod, --请购单分部 po_line_locations_all poll, -- --这个表做什么的,还不清楚, 但是如果连接采购单和请购单,必须通过此table po_requisition_lines_all prl, --请购单行 po_requisition_headers_all prh --请购单行 再后来网友提示不需要采购单,请购单分布属性,那么就可以这样:SELECT prh.segment1, pol.from_line_id, pol.* FROM po_lines_all pol, po_headers_all poh, po_line_locations_all poll, po_requisition_headers_all prh, po_requisition_lines_all prl WHERE pol.po_header_id = poh.po_header_id AND poll.line_location_id(+)= prl.line_location_id and prh.requisition_header_id=prl.requisition_header_id AND poll.po_line_id = pol.po_line_id and poll.po_header_id=poh.po_header_id AND poh.segment1 ='20600018' 是可以满足要求了,那么,目前还有个问题就是, 如果PR转PO 后PO 又增加了行,那么如果连PR 查号码的时候就不能正确查出后增加的PO行,解决方法是外连接.上面的已经是外连接了,但是还是显示不出来,一定是还有外连接没有写.因为连接PO和PR 需要通过 po_line_locations_all 来连接, 那么就逐步测试一下: Step 1: SELECT pol.from_line_id, pol.* --prh.segment1, FROM po_headers_all poh, po_line_locations_all poll, -- po_requisition_headers_all prh, -- po_requisition_lines_all prl, /* full outer join */po_lines_all pol WHERE pol.po_header_id = poh.po_header_id --AND poll.line_location_id= prl.line_location_id --and prh.requisition_header_id=prl.requisition_header_id AND poll.po_line_id = pol.po_line_id and poll.po_header_id=poh.po_header_id AND poh.segment1 ='20600018' 可以正确查出po 的行. 还有一种简单简单的办法，就是把pr_line和pr_header表连在一起，用括号括起来，作为一个子查询，去和po_line_locations_all做外关联--以上是网友ideal 的提议. Ideal 说:你连接得不对。不知要连pr_line表，其他的地方也要加上外联结--他说的原因.我想也是这样,一定是哪里有外连接,而我并不清楚. 所以还是采用他的建议；就是把pr_line和pr_header表连在一起，用括号括起来，作为一个子查询，去和po_line_locations_all做外关联关于外连接以前只是字面上的理解,现在遇到了,才知道数据库的基础知识重要.再次感慨一下. 顺遍说一下, 在9i 之前,oracle 不支持用单词写的外连接.如,SELECT pol.from_line_id, pol.* --prh.segment1, FROM po_headers_all poh, po_line_locations_all poll, po_requisition_headers_all prh, po_requisition_lines_all prl, /* full outer join */po_lines_all pol WHERE pol.po_header_id = poh.po_header_id AND poll.line_location_id(+)= prl.line_location_id and prh.requisition_header_id=prl.requisition_header_id AND poll.po_line_id = pol.po_line_id and poll.po_header_id=poh.po_header_id AND poh.segment1 ='20600018' 其中 full outer join 在ERP应用的8.147 DB里并不被支持,所以还要写+那种origin 方法. Step 2: --step 2 SELECT prh.segment1,pol.from_line_id, pol.* FROM po_headers_all poh, po_line_locations_all poll, po_requisition_headers_all prh, po_requisition_lines_all prl, po_lines_all pol WHERE pol.po_header_id = poh.po_header_id AND poll.line_location_id(+)=(select prl.line_location_id from prh, prl where prh.requisition_header_id=prl.requisition_header_id) AND poll.po_line_id = pol.po_line_id and poll.po_header_id=poh.po_header_id AND poh.segment1 ='20600018' 出现错误:ORA-01799 a column may not be outer-joined to a subquery Cause: expression(+) relop (subquery) is not allowed. Action: Either remove the (+) or make a view out of the subquery. In V6 and before, the (+) was just ignored in this case. Step 3: --step 3 /* Formatted on 2006/04/07 14:01 (Formatter Plus v4.8.6) */SELECT prl_line.segment1,pol.from_line_id, pol.* --prh.segment1, FROM po_headers_all poh, po_line_locations_all poll, /*po_requisition_headers_all prh, po_requisition_lines_all prl,*/ (SELECT prl.*, prh.segment1 FROM po_requisition_headers_all prh, po_requisition_lines_all prl WHERE prh.requisition_header_id = prl.requisition_header_id) prl_line, po_lines_all pol WHERE pol.po_header_id = poh.po_header_id AND poll.line_location_id= prl_line.line_location_id(+) AND poll.po_line_id = pol.po_line_id AND poll.po_header_id = poh.po_header_id AND poh.segment1 ='20600018' 这样写是可以了 这一步是第二步的改善.关于外连接,如果那边的栏位缺少就在哪边写+号. 这个采购单的报表终于开发完了,学到了很多东西.还没有解决的问题,如果使用动态参数输入工具列里的pl/sql 代码.因为主要攻外连接实现了请购单号的问题.但还存在不足,就是data block的分组问题,如果后加的采购单行要分别求和. 还要感慨一下,不是写报表时调field 和text(我以前粗略地称items) 的繁琐, 而数据库基础的重要性.pl/sql 的编程能力, 这些都必须提高! 以下是这个报表的sql 语句,供借鉴:SELECTDISTINCT(ph.segment1) pono, pv.vendor_name vendor, ph.fob_lookup_code fob, ph.ship_via_lookup_code via, ap.NAME term_description, NVL (pll.promised_date, pll.need_by_date) pr_date, pl.line_num po_lineno, pll.shipment_num po_shipment, -- msi.segment1 item_no, NVL (msi.must_use_approved_vendor_flag,'N') avl_flag, msi.segment1 || ' ' || pl.item_description descrip, pll.quantity - NVL (pll.quantity_cancelled,0) qty, NVL (pl.attribute1, pl.unit_meas_lookup_code) i_uom, ph.currency_code currency, pl.unit_price u_price, DECODE (ph.vendor_contact_id, NULL,'', pvc.last_name || pvc.first_name ) contact_name, ROUND (( (pll.quantity - NVL (pll.quantity_cancelled,0)) * pl.unit_price ), 4 ) line_total, ph.comments v_desc, pll.line_location_id location_id, pv.vendor_id v_vendor_id, ph.vendor_site_id v_site_id, pl.item_id item_id, pl.line_type_id line_type, prl_line.segment1 req_num FROM po_vendors pv, po_vendor_sites_all pvs, po_vendor_contacts pvc, po_headers_all ph, po_lines_all pl, ap_terms ap, po_line_locations_all pll, mtl_system_items msi, (SELECT prl.*, prh.segment1 FROM po_requisition_headers_all prh, po_requisition_lines_all prl WHERE prh.requisition_header_id = prl.requisition_header_id) prl_line WHERE pv.vendor_id = ph.vendor_id AND pvs.vendor_site_id = ph.vendor_site_id AND( ph.vendor_contact_id = pvc.vendor_contact_id OR ph.vendor_contact_id ISNULL ) --best AND ph.terms_id = ap.term_id AND ph.org_id = NVL (:p_org_id,141) AND ph.po_header_id = pl.po_header_id AND pl.org_id = ph.org_id AND pl.po_line_id = pll.po_line_id AND pl.po_header_id = pll.po_header_id AND pll.org_id = pl.org_id AND pl.item_id = msi.inventory_item_id AND pl.org_id = msi.organization_id AND pll.quantity - NVL (pll.quantity_cancelled,0)>0 AND ph.segment1 IN (NVL (:p_segment1, ph.segment1), NVL (:p_segment2,''), NVL (:p_segment3,''), NVL (:p_segment4,''), NVL (:p_segment5,''), NVL (:p_segment6,''), NVL (:p_segment7,''), NVL (:p_segment8,''), NVL (:p_segment9,''), NVL (:p_segment10,'')) AND pll.line_location_id = prl_line.line_location_id(+)--notice here :outer join AND pll.po_header_id = ph.po_header_id ORDERBY pl.line_num , pll.shipment_num, ph.segment1;
