我有以下观点：
ALTER VIEW [dbo].[vAccount]
AS
with cte_accounts_data AS
(
SELECT
null as CompanyVendorAccountId
,CAST(0 as bit) as IsVendorAccount
,null as VendorAccountReference
,null as VendorCompanyId
,a.[AccountId]
,a.[CompanyId]
,a.[CompanyAccountTypeId]
,ag.[CompanyAccountGroupId]
,ag.[Name] as CompanyAccountGroupName
,a.[RegionId]
,a.[Name]
,CONCAT(c.ShortName + ': ', a.[Name], ' [' + a.[Code] +']') AS DisplayName
,a.[Code]
,a.[Address]
,a.[Email]
,a.[IncludeEscalationEmail]
,a.[GPSLat]
,a.[GPSLong]
,a.[Telephone]
,a.[VATNumber]
,a.[AutoReceive]
,a.[AutoIssue]
,a.[IsBillableToAccount]
,a.[BillingStart]
,a.[IsEquipmentDepot]
,a.[IsShiftAttendanceEnabled]
,a.[ShiftMinHoursForLunchDeduction]
,a.[NightShiftStart]
,a.[NightShiftEnd]
,a.[ShiftStartDayOfMonth]
,a.[OperatingHoursStart]
,a.[OperatingHoursEnd]
,a.[LoadBays]
,a.[LoadInterval]
,a.[ArrivalInterval]
,a.[OverrideStockTakeCloseBalanceTime]
--,a.[RFEquipment]
,a.[temp_IgnoreVendorIssueViaSAP]
,a.[Archived]
,a.[CreatedDate]
,a.[CreatedBy_PersonId]
,a.[UpdatedDate]
,a.[UpdatedBy_PersonId]
,cat.Name as CompanyAccountTypeName
,at.Name as AccountTypeName
,at.AccountTypeId
,at.EnumAccountType
,r.Name as Region
,c.Name as Company
,CONCAT(c.Code, ': ', a.Name, ' ',a.Code, ' ', c.Name, ' ', r.Name, ' ', at.Name, ' ', r.Code, ' ') as ViewSearchColumn
FROM
[Account] a
JOIN Company c on (a.CompanyId = c.CompanyId)
JOIN CompanyAccountType cat on (a.CompanyAccountTypeId = cat.CompanyAccountTypeId)
JOIN AccountType at on (cat.AccountTypeId = at.AccountTypeId)
LEFT OUTER JOIN vCompanyAccountGroup ag on (a.CompanyAccountGroupId = ag.CompanyAccountGroupId)
LEFT OUTER JOIN Region r on (a.RegionId = r.RegionId)
UNION
SELECT
cv.[CompanyVendorAccountId]
,CAST(1 as bit) as IsVendorAccount
,cv.[VendorAccountReference]
,a.[CompanyId] as VendorCompanyId
,a.[AccountId]
,cv.[CompanyId]
,cv.[CompanyAccountTypeId]
,ag.[CompanyAccountGroupId]
,ag.[Name] as CompanyAccountGroupName
,a.[RegionId]
,a.[Name]
,CONCAT(c.ShortName + ': ', a.[Name], ' [' + cv.[VendorAccountReference] +']') AS DisplayName
,cv.[VendorAccountReference] as [Code]
,a.[Address]
,a.[Email]
,a.[IncludeEscalationEmail]
,a.[GPSLat]
,a.[GPSLong]
,a.[Telephone]
,a.[VATNumber]
,a.[AutoReceive]
,a.[AutoIssue]
,a.[IsBillableToAccount]
,a.[BillingStart]
,a.[IsEquipmentDepot]
,a.[IsShiftAttendanceEnabled]
,a.[ShiftMinHoursForLunchDeduction]
,a.[NightShiftStart]
,a.[NightShiftEnd]
,a.[ShiftStartDayOfMonth]
,a.[OperatingHoursStart]
,a.[OperatingHoursEnd]
,a.[LoadBays]
,a.[LoadInterval]
,a.[ArrivalInterval]
,a.[OverrideStockTakeCloseBalanceTime]
--,a.[RFEquipment]
,a.[temp_IgnoreVendorIssueViaSAP]
,cv.[Archived]
,cv.[CreatedDate]
,cv.[CreatedBy_PersonId]
,cv.[UpdatedDate]
,cv.[UpdatedBy_PersonId]
,cat.Name as CompanyAccountTypeName
,at.Name as AccountTypeName
,at.AccountTypeId
,at.EnumAccountType
,r.Name as Region
,c.Name as Company
,CONCAT(c.Code, ': ', a.Name, ' ',a.Code, ' ', c.Name, ' ', r.Name, ' ', at.Name, ' ', r.Code, ' ') as ViewSearchColumn
FROM
[CompanyVendorAccount] cv
JOIN Company c on (cv.CompanyId = c.CompanyId)
JOIN CompanyAccountType cat on (cv.CompanyAccountTypeId = cat.CompanyAccountTypeId)
JOIN AccountType at on (cat.AccountTypeId = at.AccountTypeId)
JOIN Account a on (cv.VendorAccountId = a.AccountId)
LEFT OUTER JOIN Region r on (a.RegionId = r.RegionId)
LEFT OUTER JOIN vCompanyAccountGroup ag on (cv.CompanyAccountGroupId = ag.CompanyAccountGroupId)
WHERE
cv.CompanyId != a.CompanyId
)
,cte_ranking_order as
(
SELECT ROW_NUMBER() over (ORDER BY AccountId, CompanyId) as rankNumber,* FROM cte_accounts_data
)
SELECT [CompanyVendorAccountId]
,IsVendorAccount
,[VendorAccountReference]
,[VendorCompanyId]
,[AccountId]
,[CompanyId]
,[CompanyAccountTypeId]
,[CompanyAccountGroupId]
,[CompanyAccountGroupName]
,[RegionId]
,[Name]
,[DisplayName]
,[Code]
,[Address]
,[Email]
,[IncludeEscalationEmail]
,[GPSLat]
,[GPSLong]
,[Telephone]
,[VATNumber]
,[AutoReceive]
,[AutoIssue]
,[IsBillableToAccount]
,[BillingStart]
,[IsEquipmentDepot]
,[IsShiftAttendanceEnabled]
,[ShiftMinHoursForLunchDeduction]
,[NightShiftStart]
,[NightShiftEnd]
,[ShiftStartDayOfMonth]
,[OperatingHoursStart]
,[OperatingHoursEnd]
,[LoadBays]
,[LoadInterval]
,[ArrivalInterval]
,[OverrideStockTakeCloseBalanceTime]
,[temp_IgnoreVendorIssueViaSAP]
,[Archived]
,[CreatedDate]
,[CreatedBy_PersonId]
,[UpdatedDate]
,[UpdatedBy_PersonId]
,[CompanyAccountTypeName]
,[AccountTypeName]
,[AccountTypeId]
,[EnumAccountType]
,[Region]
,[Company]
,[ViewSearchColumn]
FROM cte_ranking_order where rankNumber = 1
GO
我修改为上面的样子。
下面是原始视图：
ALTER VIEW [dbo].[vAccount]
AS
with cte_accounts_data AS
(
SELECT
null as CompanyVendorAccountId
,CAST(0 as bit) as IsVendorAccount
,null as VendorAccountReference
,null as VendorCompanyId
,a.[AccountId]
,a.[CompanyId]
,a.[CompanyAccountTypeId]
,ag.[CompanyAccountGroupId]
,ag.[Name] as CompanyAccountGroupName
,a.[RegionId]
,a.[Name]
,CONCAT(c.ShortName + ': ', a.[Name], ' [' + a.[Code] +']') AS DisplayName
,a.[Code]
,a.[Address]
,a.[Email]
,a.[IncludeEscalationEmail]
,a.[GPSLat]
,a.[GPSLong]
,a.[Telephone]
,a.[VATNumber]
,a.[AutoReceive]
,a.[AutoIssue]
,a.[IsBillableToAccount]
,a.[BillingStart]
,a.[IsEquipmentDepot]
,a.[IsShiftAttendanceEnabled]
,a.[ShiftMinHoursForLunchDeduction]
,a.[NightShiftStart]
,a.[NightShiftEnd]
,a.[ShiftStartDayOfMonth]
,a.[OperatingHoursStart]
,a.[OperatingHoursEnd]
,a.[LoadBays]
,a.[LoadInterval]
,a.[ArrivalInterval]
,a.[OverrideStockTakeCloseBalanceTime]
--,a.[RFEquipment]
,a.[temp_IgnoreVendorIssueViaSAP]
,a.[Archived]
,a.[CreatedDate]
,a.[CreatedBy_PersonId]
,a.[UpdatedDate]
,a.[UpdatedBy_PersonId]
,cat.Name as CompanyAccountTypeName
,at.Name as AccountTypeName
,at.AccountTypeId
,at.EnumAccountType
,r.Name as Region
,c.Name as Company
,CONCAT(c.Code, ': ', a.Name, ' ',a.Code, ' ', c.Name, ' ', r.Name, ' ', at.Name, ' ', r.Code, ' ') as ViewSearchColumn
FROM
[Account] a
JOIN Company c on (a.CompanyId = c.CompanyId)
JOIN CompanyAccountType cat on (a.CompanyAccountTypeId = cat.CompanyAccountTypeId)
JOIN AccountType at on (cat.AccountTypeId = at.AccountTypeId)
LEFT OUTER JOIN vCompanyAccountGroup ag on (a.CompanyAccountGroupId = ag.CompanyAccountGroupId)
LEFT OUTER JOIN Region r on (a.RegionId = r.RegionId)
UNION
SELECT
cv.[CompanyVendorAccountId]
,CAST(1 as bit) as IsVendorAccount
,cv.[VendorAccountReference]
,a.[CompanyId] as VendorCompanyId
,a.[AccountId]
,cv.[CompanyId]
,cv.[CompanyAccountTypeId]
,ag.[CompanyAccountGroupId]
,ag.[Name] as CompanyAccountGroupName
,a.[RegionId]
,a.[Name]
,CONCAT(c.ShortName + ': ', a.[Name], ' [' + cv.[VendorAccountReference] +']') AS DisplayName
,cv.[VendorAccountReference] as [Code]
,a.[Address]
,a.[Email]
,a.[IncludeEscalationEmail]
,a.[GPSLat]
,a.[GPSLong]
,a.[Telephone]
,a.[VATNumber]
,a.[AutoReceive]
,a.[AutoIssue]
,a.[IsBillableToAccount]
,a.[BillingStart]
,a.[IsEquipmentDepot]
,a.[IsShiftAttendanceEnabled]
,a.[ShiftMinHoursForLunchDeduction]
,a.[NightShiftStart]
,a.[NightShiftEnd]
,a.[ShiftStartDayOfMonth]
,a.[OperatingHoursStart]
,a.[OperatingHoursEnd]
,a.[LoadBays]
,a.[LoadInterval]
,a.[ArrivalInterval]
,a.[OverrideStockTakeCloseBalanceTime]
--,a.[RFEquipment]
,a.[temp_IgnoreVendorIssueViaSAP]
,cv.[Archived]
,cv.[CreatedDate]
,cv.[CreatedBy_PersonId]
,cv.[UpdatedDate]
,cv.[UpdatedBy_PersonId]
,cat.Name as CompanyAccountTypeName
,at.Name as AccountTypeName
,at.AccountTypeId
,at.EnumAccountType
,r.Name as Region
,c.Name as Company
,CONCAT(c.Code, ': ', a.Name, ' ',a.Code, ' ', c.Name, ' ', r.Name, ' ', at.Name, ' ', r.Code, ' ') as ViewSearchColumn
FROM
[CompanyVendorAccount] cv
JOIN Company c on (cv.CompanyId = c.CompanyId)
JOIN CompanyAccountType cat on (cv.CompanyAccountTypeId = cat.CompanyAccountTypeId)
JOIN AccountType at on (cat.AccountTypeId = at.AccountTypeId)
JOIN Account a on (cv.VendorAccountId = a.AccountId)
LEFT OUTER JOIN Region r on (a.RegionId = r.RegionId)
LEFT OUTER JOIN vCompanyAccountGroup ag on (cv.CompanyAccountGroupId = ag.CompanyAccountGroupId)
WHERE
cv.CompanyId != a.CompanyId
我唯一添加的想法是该cte：
,cte_ranking_order as
(
SELECT ROW_NUMBER() over (PARTITION BY AccountId, CompanyID ORDER BY AccountId, CompanyId) as rankNumber,* FROM cte_accounts_data
)
这样做的目的是通过给它一个ROW_NUMBER()并用over (PARTITION BY AccountId, CompanyID ORDER BY AccountId, CompanyId)对数据进行分区，从原始选择的lsits中仅选择唯一的帐户。
当存储过程尝试将此视图与其他视图（在特定的@AccountId中传递）连接时，该存储过程执行大约5分钟。
我真的不知道可能是什么原因造成的？
答案 0 :(得分：1)
我打算将此添加为评论，但我无法真正给您一个我想说的话的好例子...
您是否消除了SQL的参数嗅探为元凶？我已经发生过很多次了，在查询窗口中运行查询速度很快，但是sp永远需要花时间。启动参数嗅探时可能会发生这种情况。您可以通过将传递的变量分配给SP中的新变量，然后引用它们来避免这种情况。
例如，
CREATE PROCEDURE dbo.MyProcedureName(
@AccountID INT
)
BEGIN
-- Prevent parameter sniffing.
DECLARE @MyAccountID INT = @AccountID;
SELECT
...
FROM dbo.MyView
WHERE
MyView.AccountID = @MyAccountID;
...
END
只是一个想法，但这是我以前发生的事情，我把头撞在墙上试图弄清楚。
我知道还有其他方法（也许更好）来解决这个特定问题，但是这种解决方案一直对我有用。
有关此主题的一些其他阅读材料： https://www.red-gate.com/simple-talk/sql/t-sql-programming/parameter-sniffing/