实用的银行转账存储过程和流水号生成存储过程

银行转账存储过程 USE [BankInfor]GOSET ANSI_NULLS ONGOSET QUOTED_IDENTIFIER ONGOALTER PROCEDURE [dbo].[Transfer](@inAccount int,@outAccount int,@amount float)as declare @totalDeposit float; begin select @totalDeposit=total from Accou

                        <p>银行转账存储过程</p>

USE [BankInfor] GO SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO ALTER PROCEDURE [dbo].[Transfer](@inAccount int,@outAccount int,@amount float) as declare @totalDeposit float; begin select @totalDeposit=total from Account where AccountNum=@outAccount; if @totalDeposit is null begin rollback; print'转出账户不存在或账户中没有存款' return; end if @totalDeposit<@amount begin rollback; print'余额不足，不能操作' return; end update Account set total=total-@amount where AccountNum=@outAccount; update Account set total=total+@amount where AccountNum=@inAccount; print'转账成功！' commit; end;

流水号生成存储过程

if exists(select 1 from sysobjects where id=OBJECT_ID('GetSerialNo') and xtype='p') drop proc GetSerialNo go Create procedure [dbo].[GetSerialNo]
(
@sCode varchar(50)
)
as begin Declare @sValue varchar(16),@dToday datetime,@sQZ varchar(50) --这个代表前缀 Begin Tran
Begin Try
-- 锁定该条记录，好多人用lock去锁，起始这里只要执行一句update就可以了 --在同一个事物中，执行了update语句之后就会启动锁 Update SerialNo set sValue=sValue where sCode=@sCode
Select @sValue = sValue From SerialNo where sCode=@sCode
Select @sQZ = sQZ From SerialNo where sCode=@sCode
-- 因子表中没有记录，插入初始值
If @sValue is null
Begin Select @sValue = convert(bigint, convert(varchar(6), getdate(), 12) + '000001')
Update SerialNo set sValue=@sValue where sCode=@sCode
end else
Begin --因子表中没有记录
Select @dToday = substring(@sValue,1,6)
--如果日期相等，则加1
If @dToday = convert(varchar(6), getdate(), 12)
Select @sValue = convert(varchar(16), (convert(bigint, @sValue) + 1))
else --如果日期不相等，则先赋值日期，流水号从1开始
Select @sValue = convert(bigint, convert(varchar(6), getdate(), 12) +'000001')
Update SerialNo set sValue =@sValue where sCode=@sCode
End Select result = @sQZ+@sValue
Commit Tran
End Try
Begin Catch
Rollback Tran
Select result = 'Error' End Catch
end select*from SerialNo select convert(varchar(6), getdate(), 12)+'000001'