USE ASRS_WXZD_JYMH_CPK
go
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER TABLE kwjbxx ALTER COLUMN 双伸位都有货 TINYINT NULL
go
ALTER TRIGGER [dbo].[t_kwjbxx_U] ON [dbo].[kwjbxx]
FOR UPDATE
AS
/**
 * 在总数量从其它值变为0时，清空托盘号、库存峰值、实际物资类型、备料单号、实放物资种类
 * 如果修改后的总数量大于修改前的总数量，则更新库存峰值为修改后的总数量
 * Created by 蒋智湘 ON 05-07-08
 * Modified by 蒋智湘 ON 05-08-23 如果修改总数量前得库存数量可能为NULL，此时也需要修改库存峰值
 * Modified by jzx on 2009-8-22 库存总数量清零时，新增字段kzjrks（可追加入库数）清空。
 * Modified by jzx on 2014-12-9 增加对新字段“双伸位都有货”赋值；关闭对kcfz字段的赋值
 * Modified by jzx on 2015-6-24 当库位库存总数更改为0时，不再清空托盘号字段值。是为了处理整盘出库指令审核后，取消审核时托盘号无法复原问题
 * Modified by jzx on 2015-11-24 当更改“托盘个数”字段值时，如果当前库位存放物资是空托盘，则直接修改zsl字段值;
                                 当空库位设定托盘个数大于0后，sfwzzl字段值自动更新为'T'
 * Modified by jzx on 2016-8-27 jzx 当修改托盘个数字段值从0到1时，不再更改sfwzzl字段值
 * Modified by jzx on 2017-11-27 优化对kwjbxx表的“双伸位都有货”字段的赋值方法。由原来的4条语句更改为1条语句
 */
IF UPDATE(zsl)
BEGIN

  SET NOCOUNT ON;
  
  IF EXISTS(SELECT 2 FROM inserted WHERE zsl = 0)
    UPDATE kwjbxx SET kcfz = NULL, sjwzlx = NULL, sfwzzl = NULL, kzjrks = NULL
      FROM inserted I
        WHERE I.kwbh = kwjbxx.kwbh
          AND I.zsl = 0;
  
  IF EXISTS(SELECT 2 FROM inserted WHERE xnkw = 0 AND (nckw IS NOT NULL OR wckw IS NOT NULL))
  BEGIN
    UPDATE kwjbxx SET 双伸位都有货=
       CASE WHEN (r.zsl > 0 AND wc.浅货位库存数>0)
                OR (r.zsl > 0 AND nc.深货位库存数>0) THEN 3
            -- 深货位有货，则更新为1
            WHEN nc.深货位库存数> 0 THEN 1
            -- 浅货位有货，则更新为2
            WHEN wc.浅货位库存数> 0 THEN 2
            ELSE 0 END
      FROM kwjbxx r LEFT JOIN (SELECT zsl 浅货位库存数, kwbh FROM kwjbxx) wc ON r.wckw=wc.kwbh
              LEFT JOIN (SELECT zsl 深货位库存数, kwbh FROM kwjbxx) nc ON r.nckw=nc.kwbh
            , inserted i
        WHERE (i.nckw IS NOT NULL OR i.wckw IS NOT NULL)
          AND (r.kwbh IN(i.nckw,i.wckw,i.kwbh))
   END;
  END
go
UPDATE kwjbxx SET 双伸位都有货=r.x
  FROM ( select r.kwbh,r.zsl,r.wckw,浅货位库存数,r.nckw,深货位库存数
        ,  CASE WHEN (r.zsl > 0 AND wc.浅货位库存数>0) OR (r.zsl > 0 AND nc.深货位库存数>0) THEN 3
        WHEN nc.深货位库存数> 0 THEN 1
        WHEN wc.浅货位库存数> 0 THEN 2
        ELSE 0 END x
      from
       kwjbxx r LEFT JOIN (SELECT zsl 浅货位库存数, kwbh FROM kwjbxx) wc ON r.wckw=wc.kwbh
          LEFT JOIN (SELECT zsl 深货位库存数, kwbh FROM kwjbxx) nc ON r.nckw=nc.kwbh
      WHERE (nckw IS NOT NULL OR wckw IS NOT NULL)
       ) r
    WHERE kwjbxx.kwbh=r.kwbh
go

-- kws字段从java代码移入数据库；双伸库位都没有托盘的优先安排，深货位有的浅货位没有的，则次优安排
update sys_SQL_statements set SQL_string='kws,双伸位都有货,storeDist'
where ID='orderClauseForDistance';
go