在程序中使用多項變量

Question

所以這對你來說應該是非常基本的。我有一個存儲過程，通過日期進行查找。我想添加一個@storeno變量，它可以是一個或所有的瘡。我將如何做到這一點？

USE [POS_REPORT] 
GO 

SET ANSI_NULLS ON 
GO 

SET QUOTED_IDENTIFIER ON 
GO 


CREATE PROCEDURE [dbo].[sp_ReportTotals] (
@fromdate VARCHAR(10), 
@todate VARCHAR(10) 
) 
AS 
BEGIN 
SELECT 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[storeno], 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[Description], 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[transactiondate], 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[amount] AS 'pos', 
[POS_REPORT].[dbo].[SAP_FI_INBOUND_DAILY_TOTALS].[amount] AS 'ecc', 
CASE WHEN [POS_REPORT].[dbo].[Txn_Daily_Totals].[amount] = [POS_REPORT].[dbo].[SAP_FI_INBOUND_DAILY_TOTALS].[amount] THEN 'BALANCED' ELSE 'UNBALANCED' END AS 'status', 
[POS_REPORT].[dbo].[comments].[responce], 
[POS_REPORT].[dbo].[comments].[comment] 
FROM 
[POS_REPORT].[dbo].[Txn_Daily_Totals] 
LEFT JOIN 
[POS_REPORT].[dbo].[SAP_FI_INBOUND_DAILY_TOTALS] ON 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[storeno] + 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[transactiondate] = 
[POS_REPORT].[dbo].[SAP_FI_INBOUND_DAILY_TOTALS].[storeno] + 
[POS_REPORT].[dbo].[SAP_FI_INBOUND_DAILY_TOTALS].[transactiondate] 
LEFT JOIN 
[POS_REPORT].[dbo].[comments] ON 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[storeno] + 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[transactiondate] = 
[POS_REPORT].[dbo].[comments].[storeno] + 
[POS_REPORT].[dbo].[comments].[transactiondate] 
WHERE 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[transactiondate] = @fromdate AND 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[transactiondate] <= @todate 
ORDER BY 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[Description], 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[transactiondate] 
END 

GO 

任何幫助，將不勝感激。

Answer 1

我認爲storeno是整數，即使它不是你可以遵循相同的原則爲任何其他數據類型。這將是語法簡單的方法，但看出來的執行計劃：

CREATE PROCEDURE [dbo].[sp_ReportTotals] (
@fromdate VARCHAR(10), 
@todate VARCHAR(10), 
@storeno INT -- if you want all stores send NULL as @storeno parameter, if you want specific store send its storeno 
) 
AS 
BEGIN 
SELECT 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[storeno], 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[Description], 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[transactiondate], 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[amount] AS 'pos', 
[POS_REPORT].[dbo].[SAP_FI_INBOUND_DAILY_TOTALS].[amount] AS 'ecc', 
CASE WHEN [POS_REPORT].[dbo].[Txn_Daily_Totals].[amount] = [POS_REPORT].[dbo].[SAP_FI_INBOUND_DAILY_TOTALS].[amount] THEN 'BALANCED' ELSE 'UNBALANCED' END AS 'status', 
[POS_REPORT].[dbo].[comments].[responce], 
[POS_REPORT].[dbo].[comments].[comment] 
FROM 
[POS_REPORT].[dbo].[Txn_Daily_Totals] 
LEFT JOIN 
[POS_REPORT].[dbo].[SAP_FI_INBOUND_DAILY_TOTALS] ON 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[storeno] + 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[transactiondate] = 
[POS_REPORT].[dbo].[SAP_FI_INBOUND_DAILY_TOTALS].[storeno] + 
[POS_REPORT].[dbo].[SAP_FI_INBOUND_DAILY_TOTALS].[transactiondate] 
LEFT JOIN 
[POS_REPORT].[dbo].[comments] ON 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[storeno] + 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[transactiondate] = 
[POS_REPORT].[dbo].[comments].[storeno] + 
[POS_REPORT].[dbo].[comments].[transactiondate] 
WHERE 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[transactiondate] = @fromdate AND 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[transactiondate] <= @todate AND 
(@storeno IS NULL OR [POS_REPORT].[dbo].[Txn_Daily_Totals].[storeno] = @storeno) 
ORDER BY 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[Description], 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[transactiondate] 
END 

那些可能產生更有利的執行計劃可能是另一種方法：

CREATE PROCEDURE [dbo].[sp_ReportTotals] (
@fromdate VARCHAR(10), 
@todate VARCHAR(10), 
@storeno INT -- if you want all stores send NULL as @storeno parameter, if you want specific store send its storeno 
) 
AS 
BEGIN 
SELECT 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[storeno], 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[Description], 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[transactiondate], 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[amount] AS 'pos', 
[POS_REPORT].[dbo].[SAP_FI_INBOUND_DAILY_TOTALS].[amount] AS 'ecc', 
CASE WHEN [POS_REPORT].[dbo].[Txn_Daily_Totals].[amount] = [POS_REPORT].[dbo].[SAP_FI_INBOUND_DAILY_TOTALS].[amount] THEN 'BALANCED' ELSE 'UNBALANCED' END AS 'status', 
[POS_REPORT].[dbo].[comments].[responce], 
[POS_REPORT].[dbo].[comments].[comment] 
INTO #temp 
FROM 
[POS_REPORT].[dbo].[Txn_Daily_Totals] 
LEFT JOIN 
[POS_REPORT].[dbo].[SAP_FI_INBOUND_DAILY_TOTALS] ON 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[storeno] + 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[transactiondate] = 
[POS_REPORT].[dbo].[SAP_FI_INBOUND_DAILY_TOTALS].[storeno] + 
[POS_REPORT].[dbo].[SAP_FI_INBOUND_DAILY_TOTALS].[transactiondate] 
LEFT JOIN 
[POS_REPORT].[dbo].[comments] ON 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[storeno] + 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[transactiondate] = 
[POS_REPORT].[dbo].[comments].[storeno] + 
[POS_REPORT].[dbo].[comments].[transactiondate] 
WHERE 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[transactiondate] = @fromdate AND 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[transactiondate] <= @todate 
ORDER BY 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[Description], 
[POS_REPORT].[dbo].[Txn_Daily_Totals].[transactiondate] 

IF(@storeno IS NULL) 
BEGIN 
    SELECT * 
    FROM #temp 
END 
ELSE 
BEGIN 
    SELECT * 
    FROM #temp 
    WHERE storeno = @storeno 
END 

END 

這種方法涉及兩個SELECT語句和臨時表，但它可能執行得更快（即可能有更好的執行計劃）。在SP的生產版本中使用其中的任何版本之前，請檢查執行計劃和查詢成本指標，並確定哪種方法對您更好。

Answer 2

CREATE PROCEDURE [dbo].[sp_ReportTotals] (
--your paramets 
@storeno your_data_type 
.... 
--Changed WHERE clause 
WHERE 
    [POS_REPORT].[dbo].[Txn_Daily_Totals].[transactiondate] = @fromdate AND 
    [POS_REPORT].[dbo].[Txn_Daily_Totals].[transactiondate] <= @todate AND 
    [POS_REPORT].[dbo].[Txn_Daily_Totals].[storeno] = ISNULL(@storeno, [POS_REPORT].[dbo].[Txn_Daily_Totals].[storeno])