Reset column value everyday - sql

Question

My column needs to start from 1000 everyday. For every new entry, this number increments by 1. The next day, it should revert to 1000 again. How can I make this happen?

Answer 1

CREATE TABLE [dbo].[GN_GnNm_Generate_Number_T](
[GnNm_Code] [varchar](50) NOT NULL,
[GnNm_Pad_With] [varchar](3) NOT NULL,
[GnNm_No_Of_Times] [varchar](6) NOT NULL,
[GnNm_Increment_No] [int] NOT NULL, /* Starting No eg:1 or 1000 */
[GnNm_Recycle] [char](1) NOT NULL, /* Recycle Type D-Daywise Y-yearwise M-Monthwise*/
[GnNm_Recycle_Type] [varchar](1) NOT NULL,
[GnNm_Recycle_Date] [datetime] NULL
) ON [PRIMARY]
GO
INSERT INTO GN_GnNm_Generate_Number_T
VALUES ('V', '0','5','1000','D','Y',GETDATE())
/* Run & Execute this store procedure for increment no. */
/* Automatically recycle everyday. */
CREATE PROCEDURE [dbo].[usp_Genrate_Number]
#Code_Text Varchar(50), #Gen_Pad varchar(3), #Recycle Varchar(1), #Gen_Code Varchar(10)='' OUTPUT
AS
DECLARE #Pad_With Char(1), #Increment_No int, #No_Of_Times Varchar(6), #Gen_No Varchar(4),
#Recycle_Type Varchar(1), #Recycle_Date Datetime, #EndofMonth Datetime, #EndofYear Datetime
BEGIN
SELECT #Pad_With = GnNm_Pad_With , #No_Of_Times = GnNm_No_Of_Times,
#Recycle_Type = GnNm_Recycle_Type, #Recycle_Date = GnNm_Recycle_Date
FROM GN_GnNm_Generate_Number_T
WHERE GnNm_Code = #Code_Text
SELECT #EndofMonth = DATEADD(MONTH,1+DATEDIFF(MONTH,0,#Recycle_Date),-1);
SELECT #EndofYear = DATEADD(YEAR,1,#Recycle_Date)
IF #Recycle = 'Y'
BEGIN
IF #Recycle_Type = 'D' AND #Recycle_Date < CAST(CONVERT(VARCHAR,GETDATE(),102)AS DATETIME)
BEGIN
UPDATE GN_GnNm_Generate_Number_T
SET GnNm_Increment_No = 1000,
GnNm_Recycle_Date = CAST(CONVERT(VARCHAR,GETDATE(),102)AS DATETIME)
WHERE GnNm_Code = #Code_Text
END
IF #Recycle_Type = 'M' AND CAST(CONVERT(VARCHAR,GETDATE(),102)AS DATETIME) > #EndofMonth
BEGIN
UPDATE GN_GnNm_Generate_Number_T
SET GnNm_Increment_No = 0,
GnNm_Recycle_Date = CAST(CONVERT(VARCHAR,GETDATE(),102)AS DATETIME)
WHERE GnNm_Code = #Code_Text
END
IF #Recycle_Type = 'Y' AND CAST(CONVERT(VARCHAR,GETDATE(),102)AS DATETIME) = #EndofYear
BEGIN
UPDATE GN_GnNm_Generate_Number_T
SET GnNm_Increment_No = 0,
GnNm_Recycle_Date = CAST(CONVERT(VARCHAR,GETDATE(),102)AS DATETIME)
WHERE GnNm_Code = #Code_Text
END
END
SELECT #Increment_No = GnNm_Increment_No
FROM GN_GnNm_Generate_Number_T
WHERE GnNm_Code = #Code_Text
SET #Increment_No = #Increment_No + 1
SELECT #Gen_Code = #Gen_Pad + REPLICATE(''+#Pad_With+'',#No_Of_Times - (LEN(#Increment_No)))+CONVERT(VARCHAR,#Increment_No)
UPDATE GN_GnNm_Generate_Number_T
SET GnNm_Increment_No = #Increment_No
WHERE GnNm_Code = #Code_Text
SELECT #Gen_Code
RETURN
END

Answer 2

Suppose table name is 'Table_1'
Auto incremental column name is 'ID'
Date column name is 'EntryDate' (Assume Table_1 have this column)
DECLARE #NewId int = 0
IF EXISTS (select * from Table_1 where EntryDate=GETDATE() and ID=1000)
#NewId = (select max(ID) from Table_1) + 1
ELSE
#NewId = 1000
INSERT INTO TABLE_1(ID,EntryDate) VALUES (#NewId,GETDATE())