Question

以下是我的存储过程。

USE [CBRDev]
GO
/****** Object:  StoredProcedure [dbo].[usp_ExportData]    Script Date: 6/14/2017 12:48:44 PM ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER procedure [dbo].[usp_ExportData]
(
@StartDate Date,
@EndDate Date
)

AS
BEGIN
 Select REPLACE(U.EmployeeID, ',','') as EmployeeID,REPLACE(U.ClientID, ',','') as ClientID,REPLACE(U.ID, ',','') as ID,
 REPLACE(U.FirstName, ',','')as FirstName,REPLACE(U.MiddleName, ',','')as MiddleName,
 REPLACE(U.LastName, ',','')as LastName,REPLACE(U.Email, ',','')as Email,REPLACE(U.SSN, ',','')as SSN,
 REPLACE(U.DateOfBirth, ',','')as DateOfBirth,REPLACE(U.Gender, ',','')as Gender,REPLACE(U.CreatedDate, ',','')as CreatedDate,
REPLACE(U.ModifiedDate, ',','')as ModifiedDate, REPLACE(UPI.StreetAddress1, ',','')as StreetAddress1,
REPLACE(UPI.StreetAddress2, ',','')as StreetAddress2,REPLACE(UPI.City, ',','')as City,
REPLACE(UPI.State, ',','')as State,
REPLACE(UPI.ZipCode, ',','')as ZipCode,
REPLACE(UPI.CellPhoneNumber, ',','')as CellPhoneNumber, '' as Department, '' as JobTitle, '' as StreetAddress3 from Users U INNER JOIN PersonalContacts UPI ON U.ID= UPI.UserID
 where U.ModifiedDate >=@StartDate and U.ModifiedDate<= @EndDate
END

如果@StartDate和@EndDate参数为null，那么我想删除where条件。

如果@StartDate和@EndDate参数存在则应用于条件然后我该怎么做？

Answer 1

您只需修改WHERE条件：

where @StartDate IS NULL OR @EndDate IS NULL OR 
      U.ModifiedDate BETWEEN @StartDate AND @EndDate

为防止parameter sniffing（一个用于不同参数值的缓存执行计划），我建议您在过程（WITH RECOMPILE）或查询级别上使用重新编译提示。 OPTION (RECOMPILE);。

Answer 2

ALTER procedure [dbo].[usp_ExportData]
(
@StartDate Date,
@EndDate Date
)
AS
BEGIN
declare @sql varchar(max)
set @sql = ''
set @sql += 'Select REPLACE(U.EmployeeID, ',','') as 
EmployeeID,REPLACE(U.ClientID, ',','') as ClientID,REPLACE(U.ID, ',','') as ID,
REPLACE(U.FirstName, ',','')as FirstName,REPLACE(U.MiddleName, ',','')as MiddleName,
REPLACE(U.LastName, ',','')as LastName,REPLACE(U.Email, ',','')as 
Email,REPLACE(U.SSN, ',','')as SSN,
REPLACE(U.DateOfBirth, ',','')as DateOfBirth,REPLACE(U.Gender, ',','')as
Gender,REPLACE(U.CreatedDate, ',','')as CreatedDate,
REPLACE(U.ModifiedDate, ',','')as ModifiedDate, REPLACE(UPI.StreetAddress1,
 ',','')as StreetAddress1,
REPLACE(UPI.StreetAddress2, ',','')as StreetAddress2,REPLACE(UPI.City, ',','')as
 City,
REPLACE(UPI.State, ',','')as State,
REPLACE(UPI.ZipCode, ',','')as ZipCode,
REPLACE(UPI.CellPhoneNumber, ',','')as CellPhoneNumber, '' as Department, '' as 
JobTitle, '' as StreetAddress3 from Users U INNER JOIN PersonalContacts UPI ON
 U.ID= UPI.UserID'
 if(@StartDate and @EndDate <> '')set @sql += 'where U.ModifiedDate
 >=''+@StartDate+'' and U.ModifiedDate<= ''+@EndDate'''
exec(@sql)
END

Answer 3

USE [CBRDev]    
GO  
/****** Object:  StoredProcedure [dbo].[usp_ExportData] Script Date: 
6/14/2017 12:48:44 PM ******/
SET ANSI_NULLS ON  
GO  
SET QUOTED_IDENTIFIER ON  
GO  
ALTER procedure [dbo].[usp_ExportData]  
(
   @StartDate Date,
   @EndDate Date  
)

AS
BEGIN

Select REPLACE(U.EmployeeID, ',','') as EmployeeID,
REPLACE(U.ClientID, ',','') as ClientID, 
REPLACE(U.ID, ',','') as ID, REPLACE(U.FirstName, ',','')as FirstName, 
REPLACE(U.MiddleName, ',','')as MiddleName,
REPLACE(U.LastName, ',','')as LastName,
REPLACE(U.Email, ',','')as Email,REPLACE(U.SSN, ',','')as SSN,
REPLACE(U.DateOfBirth, ',','')as DateOfBirth,
REPLACE(U.Gender, ',','')as Gender,
REPLACE(U.CreatedDate, ',','')as CreatedDate,
REPLACE(U.ModifiedDate, ',','')as ModifiedDate, 
REPLACE(UPI.StreetAddress1, ',','')as StreetAddress1,
REPLACE(UPI.StreetAddress2, ',','')as StreetAddress2,
REPLACE(UPI.City, ',','')as City,
REPLACE(UPI.State, ',','')as State,
REPLACE(UPI.ZipCode, ',','')as ZipCode,
REPLACE(UPI.CellPhoneNumber, ',','')as CellPhoneNumber, '' as Department, '' 
as JobTitle, '' as StreetAddress3   
INTO #NEW_TABLE   
FROM Users U INNER JOIN PersonalContacts UPI ON U.ID= UPI.UserID  

IF (@StartDate IS NOT NULL AND @EndDate IS NOT NULL)  
  SELECT * FROM #NEW_TABLE  
  where ModifiedDate >=@StartDate and ModifiedDate<= @EndDate   
ELSE  
  SELECT * FROM #NEW_TABLE   
END

Answer 4

试试这个......

let numberFormatter = NumberFormatter()
numberFormatter.numberStyle = .decimal
let finalNumber = numberFormatter.number(from: "\(1e+07)")
print(finalNumber!)

Answer 5

我只是在调用存储过程之前检查'TEMP_DATA_TABLE'是否为null，如果它不为null则删除该表。它有效。

USE [CBRDev]    
GO  
/****** Object:  StoredProcedure [dbo].[usp_ExportData] Script Date: 
6/14/2017 12:48:44 PM ******/
SET ANSI_NULLS ON  
GO  
SET QUOTED_IDENTIFIER ON  
GO  
ALTER procedure [dbo].[usp_ExportData]  
(
   @StartDate Date,
   @EndDate Date  
)

AS
BEGIN

if (select OBJECT_ID('TEMP_DATA_TABLE')) Is Not Null
Begin 
DROP Table TEMP_DATA_TABLE
end
Select REPLACE(U.EmployeeID, ',','') as EmployeeID,
REPLACE(U.ClientID, ',','') as ClientID, 
REPLACE(U.ID, ',','') as ID, REPLACE(U.FirstName, ',','')as FirstName, 
REPLACE(U.MiddleName, ',','')as MiddleName,
REPLACE(U.LastName, ',','')as LastName,
REPLACE(U.Email, ',','')as Email,REPLACE(U.SSN, ',','')as SSN,
REPLACE(U.DateOfBirth, ',','')as DateOfBirth,
REPLACE(U.Gender, ',','')as Gender,
REPLACE(U.CreatedDate, ',','')as CreatedDate,
REPLACE(U.ModifiedDate, ',','')as ModifiedDate, 
REPLACE(UPI.StreetAddress1, ',','')as StreetAddress1,
REPLACE(UPI.StreetAddress2, ',','')as StreetAddress2,
REPLACE(UPI.City, ',','')as City,
REPLACE(UPI.State, ',','')as State,
REPLACE(UPI.ZipCode, ',','')as ZipCode,
REPLACE(UPI.CellPhoneNumber, ',','')as CellPhoneNumber, '' as Department, '' 
as JobTitle, '' as StreetAddress3   
INTO TEMP_DATA_TABLE   
FROM Users U INNER JOIN PersonalContacts UPI ON U.ID= UPI.UserID  

IF (@StartDate IS NOT NULL AND @EndDate IS NOT NULL)  
  SELECT * FROM TEMP_DATA_TABLE 
  where ModifiedDate >=@StartDate and ModifiedDate<= @EndDate   
ELSE  
  SELECT * FROM TEMP_DATA_TABLE  
END

如何使用if else在sql查询的where子句中

5 个答案: