1 create table seqTable  --序列表
2 (
3     sellerId int,
4     buyerId int,
5     createDate varchar(20),    --日期
6     curSeqNo    varchar(20)    --当前序号
7 )

 1 /*
 2 获取序列
 3 */
 4 create procedure getSeqNo(@sid int,  -- 卖家店铺ID
 5                          @bid int,     -- 买家店铺ID
 6                          @res varchar(20) output
 7                         )     -- 返回序列号  00001
 8 as
 9
10  declare @curSeqNo varchar(20),     -- 序列号
11          @curSysDate varchar(20), -- 系统日期
12          @curNo int              -- 序列
13
14     set @curSysDate = CONVERT(varchar(100), GETDATE(), 112);
15     if (@bid is null)
16         return ('-1')
17
18     -- 卖家、买家的ID都不空
19     if (@bid is not null and @sid is not null)
20         select @curSeqNo = curSeqNo from seqTable where sellerId=@sid and buyerId=@bid and createDate=@curSysDate
21     else
22         select @curSeqNo = curSeqNo from seqTable where buyerId=@bid and createDate=@curSysDate
23
24     -- 创建新的序列
25     if (@curSeqNo is null)
26         begin
27            set @curSeqNo = '0001';
28            insert into seqTable(sellerId, buyerId, createDate,curSeqNo)
29            values (@sid, @bid,@curSysDate,@curSeqNo);
30         end
31     else
32         begin
33             set @curNo = cast(@curSeqNo as int);
34             set @curNo = @curNo + 1; --递增
35             set @curSeqNo = REPLACE(STR(@curNo, 4), ' ', '0');    --格式化字符串
36             if (@bid is not null and @sid is not null)
37                 update seqTable set curSeqNo = @curSeqNo  where sellerId=@sid and buyerId=@bid and createDate=@curSysDate;
38             else
39                 update seqTable set curSeqNo = @curSeqNo where buyerId=@bid and createDate=@curSysDate
40     end
41     set @res = @curSeqNo;
42     

 1 /*
 2 单号生成规则：P+当天日期（年月日）+批发部注册序号+零售商注册序号+0000；
 3 单一商品订单流水号： P+当天日期（年月日）+批发部注册序号+零售商注册序号+0000+0000。
 4 */
 5
 6 create procedure getCurBillNo(@prefix varchar(20),
 7                           @sid int,        --卖家店铺ID
 8                           @bid int,        --买家店铺ID
 9                           @billNo varchar(1000) output --订单号
10 )
11
12 as
13     declare @res varchar(100),@seqNo varchar(100),@curSysDate varchar(100)
14
15     if(@bid is null)
16         return('-1')
17
18     set @curSysDate = CONVERT(varchar(100), GETDATE(), 112);
19
20     if (@prefix is null)
21         set @res ='P';
22     else
23         set @res = @prefix;
24
25     if(@sid is not null)
26         begin
27             execute getSeqNo @sid, @bid,@seqNo output
28             set @res = @res + @curSysDate+cast(@sid as varchar) + cast(@bid as varchar) + @seqNo;
29         end
30     else
31         begin
32             execute getSeqNo @sid, @bid,@seqNo output
33             set @res = @res +@curSysDate +cast(@bid as varchar) + @seqNo;
34         end
35     set @billNo = @res;
36