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所以我创建了一个存储过程，以便在我的VB.NET程序中使用。这将检查是否存在多个表，然后使用数据库内的其他表创建相关表并将数据插入到其中。最初我的存储过程运行得很好，但我最近对它做了一些更改，现在运行需要5分多钟，这导致我在程序中出现问题，因为时间延迟导致它冻结。因此我需要减少执行存储过程所需的时间。下面我已经确定了需要很长时间的存储过程的两部分。它们是：慢存储过程 - SQL Server
Customers1表
IF EXISTS (SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 'Customers1')
drop table Customers1
Create Table Customers1
(ID int identity(1,1),
[AccountNumber] NVARCHAR(20),
[AddressNo] int,
[Name] NVARCHAR(50),
[Address] NVARCHAR(50),
[Address2] NVARCHAR(50),
[Town] NVARCHAR(50),
[County] nvarchar(20),
[Postcode] nvarchar(15),
[Country] nvarchar(20),
[Contact] nvarchar(81),
[Phone] nvarchar(30),
[FaxNo] NVARCHAR(30),
[CurrentBalance] MONEY,
[CreditLimit] MONEY,
[Rep] NVARCHAR (50),
[EmailAddress] NVARCHAR(225),
[shiptoid] int default(0))
insert into Customers1([AccountNumber], [AddressNo],[Name],[Address],[Address2],[Town],[County],[Postcode],[Country],[Contact],[Phone],[FaxNo],[CurrentBalance],[CreditLimit],[Rep],[EmailAddress],[shiptoid])
select
[AccountNumber]
,0 as AddressNo
,[Company]
,[Address]
,[Address2]
,[city]
,[State]
,[ZIP]
,[Country]
,[FirstName]+ ' ' +[lastname]
,[PhoneNumber]
,[FaxNumber]
,[AccountBalance]
,[CreditLimit]
,case when customtext2 = '' then 'HOUSE' else customtext2 end AS Rep
,EmailAddress
,0
from customer
union all
select
[AccountNumber]
,0 as AddressNo
,shipto.[Company]
,shipto.[Address]
,shipto.[Address2]
,shipto.[city]
,shipto.[State]
,shipto.[ZIP]
,shipto.[Country]
,customer.[FirstName]+ ' ' +customer.[lastname]
,shipto.[PhoneNumber]
,shipto.[FaxNumber]
,customer.[AccountBalance]
,customer.[CreditLimit]
,case when customtext2 = '' then 'HOUSE' else customtext2 end AS Rep
,customer.EmailAddress
,shipto.id
from customer left join shipto
on customer.id= shipto.customerid
where shipto.company is not null
order by customer.accountnumber
declare @tableid int
declare @lasttableid int
declare @AccountNumber nvarchar(25)
declare @LineNumber int
set @tableID = 1
set @lasttableID = (select max([id]) from Customers1)
set @LineNumber = 1
set @AccountNumber = (select AccountNumber from customers1 where id = @tableid)
while @tableID <= @lasttableid
begin
while @AccountNumber = (select AccountNumber from Customers1 where id = @tableid)
begin
update Customers1
set [AddressNo] = @LineNumber
where [id] = @tableid
set @LineNumber = @LineNumber + 1
set @tableid = @tableid + 1
end
set @LineNumber = 1
set @AccountNumber = (select AccountNumber from customers1 where id = @tableid)
end
Orderlinehistory1表
IF EXISTS (SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 'OrderLineHistory1')
drop table OrderLineHistory1
Create Table OrderLineHistory1
(ID int identity(1,1),
[OrderNumber] nvarchar(25),
[LineNo] INT,
[ProductCode] nvarchar(25),
[DueDate] DATETIME,
[GrossSellingPrice] money,
[OrderedQty] float,
[DeliveredQty] float)
insert into OrderLineHistory1([OrderNumber],[LineNo],[ProductCode],[DueDate],[GrossSellingPrice],[OrderedQty],[DeliveredQty])
--select
--purchaseorder.ponumber
--,0 as [LineNo]
--,item.itemlookupcode
--,Purchaseorder.RequiredDate
--,item.price
--,purchaseorderentry.quantityordered
--,purchaseorderentry.quantityreceivedtodate
--from PurchaseOrder,PurchaseOrderEntry,item
--where PurchaseOrder.id = PurchaseOrderEntry.PurchaseOrderID
--and purchaseorderentry.itemid = item.id
--and purchaseorder.potype = 0
--order by purchaseorder.ponumber,purchaseorderentry.id
select
[orderentry].orderID
,0 as [LineNo]
,item.itemlookupcode
,[order].expirationorduedate
,orderentry.price
,orderentry.quantityonorder + orderentry.quantityRTD
,orderentry.quantityRTD
from orderentry left join [order] on orderentry.orderid = [order].ID
left join item on orderentry.itemid = item.id
where orderentry.orderid >= (select min([ordernumber]) from pastorders)
order by [orderentry].orderID, [orderentry].ID
declare @tableid1 int
declare @lasttableid1 int
declare @OrderNumber1 nvarchar(25)
declare @LineNumber1 int
set @tableID1 = 1
set @lasttableID1 = (select max([id]) from OrderLineHistory1)
set @LineNumber1 = 1
set @OrderNumber1 = (select OrderNumber from OrderLineHistory1 where id = @tableid1)
while @tableID1 <= @lasttableid1
begin
while @OrderNumber1 = (select OrderNumber from OrderLineHistory1 where id = @tableid1)
begin
update OrderLineHistory1
set [LineNo] = @LineNumber1
where [id] = @tableid1
set @LineNumber1 = @LineNumber1 + 1
set @tableid1 = @tableid1 + 1
end
set @LineNumber1 = 1
set @OrderNumber1 = (select OrderNumber from OrderLineHistory1 where id = @tableid1)
end
谁能想到写这些的更有效的方法？谢谢
整个存储过程：
ALTER Procedure sp_retreatHomes
AS
--SET NOCOUNT ON
IF EXISTS (SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 'FamilyCode')
drop table FamilyCode
Create Table FamilyCode
(ID int identity(1,1),
[Code] nvarchar(17),
[Name] nvarchar(30))
insert into FamilyCode([code],[name])
values ('Code','Name')
insert into FamilyCode([code],[name])
select Code,[name]
from category
union
select Code,[name]
from department
order by [name]
IF EXISTS (SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 'Customers1')
drop table Customers1
Create Table Customers1
(ID int identity(1,1),
[AccountNumber] NVARCHAR(20),
[AddressNo] int,
[Name] NVARCHAR(50),
[Address] NVARCHAR(50),
[Address2] NVARCHAR(50),
[Town] NVARCHAR(50),
[County] nvarchar(20),
[Postcode] nvarchar(15),
[Country] nvarchar(20),
[Contact] nvarchar(81),
[Phone] nvarchar(30),
[FaxNo] NVARCHAR(30),
[CurrentBalance] MONEY,
[CreditLimit] MONEY,
[Rep] NVARCHAR (50),
[EmailAddress] NVARCHAR(225),
[shiptoid] int default(0))
insert into Customers1([AccountNumber], [AddressNo],[Name],[Address],[Address2],[Town],[County],[Postcode],[Country],[Contact],[Phone],[FaxNo],[CurrentBalance],[CreditLimit],[Rep],[EmailAddress],[shiptoid])
select
[AccountNumber]
,0 as AddressNo
,[Company]
,[Address]
,[Address2]
,[city]
,[State]
,[ZIP]
,[Country]
,[FirstName]+ ' ' +[lastname]
,[PhoneNumber]
,[FaxNumber]
,[AccountBalance]
,[CreditLimit]
,case when customtext2 = '' then 'HOUSE' else customtext2 end AS Rep
,EmailAddress
,0
from customer
union all
select
[AccountNumber]
,0 as AddressNo
,shipto.[Company]
,shipto.[Address]
,shipto.[Address2]
,shipto.[city]
,shipto.[State]
,shipto.[ZIP]
,shipto.[Country]
,customer.[FirstName]+ ' ' +customer.[lastname]
,shipto.[PhoneNumber]
,shipto.[FaxNumber]
,customer.[AccountBalance]
,customer.[CreditLimit]
,case when customtext2 = '' then 'HOUSE' else customtext2 end AS Rep
,customer.EmailAddress
,shipto.id
from customer left join shipto
on customer.id= shipto.customerid
where shipto.company is not null
order by customer.accountnumber
declare @tableid int
declare @lasttableid int
declare @AccountNumber nvarchar(25)
declare @LineNumber int
set @tableID = 1
set @lasttableID = (select max([id]) from Customers1)
set @LineNumber = 1
set @AccountNumber = (select AccountNumber from customers1 where id = @tableid)
while @tableID <= @lasttableid
begin
while @AccountNumber = (select AccountNumber from Customers1 where id = @tableid)
begin
update Customers1
set [AddressNo] = @LineNumber
where [id] = @tableid
set @LineNumber = @LineNumber + 1
set @tableid = @tableid + 1
end
set @LineNumber = 1
set @AccountNumber = (select AccountNumber from customers1 where id = @tableid)
end
IF EXISTS (SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 'CatalogueProducts1')
drop table CatalogueProducts1
Create Table CatalogueProducts1
(ID int identity(1,1),
[CatalogueCode] nvarchar(25),
[ProductCode] nvarchar(25),
[DisplaySequence] int)
insert into CatalogueProducts1([CatalogueCode],[ProductCode], [DisplaySequence])
SELECT case when left(SubDescription1,4) = '' then 'NA' else left(SubDescription1,4) end
,[ItemLookupCode]
,0
from dbo.Item
Order by left(SubDescription1,4) asc
declare @tableid2 int
declare @lasttableid2 int
declare @CatalogueCode nvarchar(25)
declare @DisplaySequence int
set @tableID2 = 1
set @lasttableID2 = (select max([id]) from CatalogueProducts1)
set @DisplaySequence = 1
set @CatalogueCode = (select CatalogueCode from CatalogueProducts1 where id = @tableid2)
while @tableID2 <= @lasttableid2
begin
while @CatalogueCode = (select CatalogueCode from CatalogueProducts1 where id = @tableid2)
begin
update CatalogueProducts1
set [DisplaySequence] = @DisplaySequence
where [id] = @tableid2
set @DisplaySequence = @DisplaySequence + 1
set @tableid2 = @tableid2 + 1
end
set @DisplaySequence = 1
set @CatalogueCode = (select CatalogueCode from CatalogueProducts1 where id = @tableid2)
end
IF EXISTS (SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 'CatalogueProducts')
drop table CatalogueProducts
Create Table CatalogueProducts
(ID int identity(1,1),
[CatalogueCode] nvarchar(25),
[ProductCode] nvarchar(25),
[DisplaySequence] nvarchar(25))
insert into CatalogueProducts([CatalogueCode],[ProductCode], [DisplaySequence])
values('CatalogueCode','ProductCode', 'DisplaySequence')
insert into CatalogueProducts([CatalogueCode],[ProductCode], [DisplaySequence])
select CatalogueCode,ProductCode,convert(nvarchar,DisplaySequence)
from CatalogueProducts1
order by id
IF EXISTS (SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 'PastOrders')
drop table PastOrders
Create Table PastOrders
(ID int identity(1,1),
[OrderNumber] NVARCHAR(25),
[AccountCode] nvarchar(20),
[AddressNo] nvarchar(10),
[OrderDate] NVARCHAR(50),
[DueDate] NVARCHAR(50),
[RepCode] NVARCHAR(50))
insert into PastOrders([OrderNumber],[AccountCode],[AddressNo],[OrderDate],[DueDate],[RepCode])
values ('OrderNumber','AccountCode','AddressNo','OrderDate','DueDate','RepCode')
insert into PastOrders([OrderNumber],[AccountCode],[AddressNo],[OrderDate],[DueDate],[RepCode])
SELECT
CONVERT(VARCHAR,[Order].ID) AS OrderNumber
,Customer.AccountNumber
,case when shiptoid = 0 then 1 else shiptoid end AS AddressNo
,isnull(convert(nvarchar,(datepart(dd,[order].ExpirationOrDueDate)))
+ '/' + convert(nvarchar,(datepart(mm,[order].ExpirationOrDueDate)))
+ '/' + convert(nvarchar,(datepart(yy,[order].ExpirationOrDueDate))),'')
,isnull(convert(nvarchar,(datepart(dd,[order].LastUpdated)))
+ '/' + convert(nvarchar,(datepart(mm,[order].LastUpdated)))
+ '/' + convert(nvarchar,(datepart(yy,[order].LastUpdated))),'')
,case when customer.customtext2 = '' then 'HOUSE' else customer.customtext2 end
FROM [Order]
LEFT JOIN Customer ON [order].customerID = customer.ID
where Customer.AccountNumber is not null
and [order].[time] > (select getdate() - 550)
update PastOrders
set [AddressNo] = convert(nvarchar,customers1.addressno)
from PastOrders,customers1
where PastOrders.[AddressNo] = customers1.shiptoid
and PastOrders.[AddressNo] <> 'AddressNo'
update PastOrders
set [AddressNo] = 1
where [AddressNo] not in (select id from shipto)
and PastOrders.[AddressNo] <> 'AddressNo'
--fix customers
IF EXISTS (SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 'Customers')
drop table Customers
Create Table Customers
(ID int identity(1,1),
[AccountNumber] NVARCHAR(20),
[AddressNo] nvarchar(30),
[Name] NVARCHAR(50),
[Address] NVARCHAR(50),
[Address2] NVARCHAR(50),
[Town] NVARCHAR(50),
[County] nvarchar(20),
[Postcode] nvarchar(15),
[Country] nvarchar(20),
[Contact] nvarchar(81),
[Phone] nvarchar(30),
[FaxNo] NVARCHAR(30),
[CurrentBalance] NVARCHAR(225),
[CreditLimit] NVARCHAR(225),
[Rep] NVARCHAR (255),
[EmailAddress] NVARCHAR(225))
insert into Customers([AccountNumber], [AddressNo],[Name],[Address],[Address2],[Town],[County],[Postcode],[Country],[Contact],[Phone],[FaxNo],[CurrentBalance],[CreditLimit],[Rep],[EmailAddress])
values ('AccountNumber', 'AddressNo','Name','Address','Address2','Town','County','Postcode','Country','Contact','Phone','FaxNo','CurrentBalance','CreditLimit','Rep','EmailAddress')
insert into Customers([AccountNumber], [AddressNo],[Name],[Address],[Address2],[Town],[County],[Postcode],[Country],[Contact],[Phone],[FaxNo],[CurrentBalance],[CreditLimit],[Rep],[EmailAddress])
select [AccountNumber],
convert(nvarchar,[AddressNo])
,[Name]
,[Address]
,[Address2]
,[Town]
,[County]
,[Postcode]
,[Country]
,[Contact]
,[Phone]
,[FaxNo]
,convert(nvarchar,[CurrentBalance])
,convert(nvarchar,[CreditLimit])
,[Rep]
,[EmailAddress]
from customers1
order by [id] asc
IF EXISTS (SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 'Products')
drop table Products
Create Table Products
(ID int identity(1,1),
[ProductCode] NVARCHAR(25),
[Description] NVARCHAR(30),
[UOM] NVARCHAR(4),
[Carton] NVARCHAR(30),
[StdPrice] NVARCHAR(25),
[SalesPrice] NVARCHAR(25),
[StockQty] NVARCHAR(25),
[PODueIn] NVARCHAR(25),
[OnSOQty] NVARCHAR(25),
[DueDate] NVARCHAR(25),
[Barcode] NVARCHAR(25),
[FamilyCode1] NVARCHAR(30),
[FamilyCode2] NVARCHAR(30))
insert into Products([ProductCode]
,[Description]
,[UOM]
,[Carton]
,[StdPrice]
,[SalesPrice]
,[StockQty]
,[PODueIn]
,[OnSOQty]
,[DueDate]
,[Barcode]
,[FamilyCode1]
,[FamilyCode2])
Values('ProductCode','Description','UOM','Carton','StdPrice','SalesPrice','StockQty','PODueIn','OnSOQty','DueDate','Barcode','FamilyCode1','FamilyCode2')
insert into Products([ProductCode]
,[Description]
,[UOM]
,[Carton]
,[Barcode]
,[StdPrice]
,[StockQty]
,[PODueIn]
,[OnSOQty]
,[DueDate]
,[FamilyCode1]
,[FamilyCode2]
,[SalesPrice])
select [ItemLookupCode]
,[Description]
,CASE [UnitOfMeasure] WHEN '' THEN 'EACH' ELSE UnitOfMeasure END AS UOM
,[SubDescription3]
, [Alias]
, convert(nvarchar,item.[Price])
, convert(nvarchar,item.[quantity])
, isnull(View_PO.PODueIn,0) as PODueIN
, convert(nvarchar,item.[QuantityCommitted])
, isnull(convert(nvarchar,(datepart(dd,View_PO.DueDate)))
+ '/' + convert(nvarchar,(datepart(mm,View_PO.DueDate)))
+ '/' + convert(nvarchar,(datepart(yy,View_PO.DueDate))),'') as DueDate
, isnull(department.[name],'') as Department
, isnull(category.[name],'') as Category
, convert(nvarchar,item.[SalePrice])
from Item
LEFT JOIN Alias ON alias.ItemID = Item.id
left join View_PO on item.id = View_PO.itemid
inner join firstAlias on alias.ID=firstAlias.id and firstAlias.ItemID=item.id
left join department on item.departmentid = department.id
left join category on item.categoryid = category.id
WHERE SubDescription3 NOT IN ('0','')
order by item.id asc
IF EXISTS (SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 'OrderLineHistory1')
drop table OrderLineHistory1
Create Table OrderLineHistory1
(ID int identity(1,1),
[OrderNumber] nvarchar(25),
[LineNo] INT,
[ProductCode] nvarchar(25),
[DueDate] DATETIME,
[GrossSellingPrice] money,
[OrderedQty] float,
[DeliveredQty] float)
insert into OrderLineHistory1([OrderNumber],[LineNo],[ProductCode],[DueDate],[GrossSellingPrice],[OrderedQty],[DeliveredQty])
--select
--purchaseorder.ponumber
--,0 as [LineNo]
--,item.itemlookupcode
--,Purchaseorder.RequiredDate
--,item.price
--,purchaseorderentry.quantityordered
--,purchaseorderentry.quantityreceivedtodate
--from PurchaseOrder,PurchaseOrderEntry,item
--where PurchaseOrder.id = PurchaseOrderEntry.PurchaseOrderID
--and purchaseorderentry.itemid = item.id
--and purchaseorder.potype = 0
--order by purchaseorder.ponumber,purchaseorderentry.id
select
[orderentry].orderID
,0 as [LineNo]
,item.itemlookupcode
,[order].expirationorduedate
,orderentry.price
,orderentry.quantityonorder + orderentry.quantityRTD
,orderentry.quantityRTD
from orderentry left join [order] on orderentry.orderid = [order].ID
left join item on orderentry.itemid = item.id
where orderentry.orderid >= (select min([ordernumber]) from pastorders)
order by [orderentry].orderID, [orderentry].ID
declare @tableid1 int
declare @lasttableid1 int
declare @OrderNumber1 nvarchar(25)
declare @LineNumber1 int
set @tableID1 = 1
set @lasttableID1 = (select max([id]) from OrderLineHistory1)
set @LineNumber1 = 1
set @OrderNumber1 = (select OrderNumber from OrderLineHistory1 where id = @tableid1)
while @tableID1 <= @lasttableid1
begin
while @OrderNumber1 = (select OrderNumber from OrderLineHistory1 where id = @tableid1)
begin
update OrderLineHistory1
set [LineNo] = @LineNumber1
where [id] = @tableid1
set @LineNumber1 = @LineNumber1 + 1
set @tableid1 = @tableid1 + 1
end
set @LineNumber1 = 1
set @OrderNumber1 = (select OrderNumber from OrderLineHistory1 where id = @tableid1)
end
IF EXISTS (SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 'OrderLineHistory')
drop table OrderLineHistory
Create Table OrderLineHistory
(ID int identity(1,1),
[OrderNumber] nvarchar(25),
[LineNo] nvarchar(25),
[ProductCode] nvarchar(25),
[DueDate] nvarchar(25),
[GrossSellingPrice]nvarchar(25),
[OrderedQty] nvarchar(25),
[DeliveredQty] nvarchar(25))
insert into OrderLineHistory([OrderNumber],[LineNo],[ProductCode],[DueDate],[GrossSellingPrice],[OrderedQty],[DeliveredQty])
values('OrderNumber','LineNo','ProductCode','DueDate','GrossSellingPrice','OrderedQty','DeliveredQty')
insert into OrderLineHistory([OrderNumber],[LineNo],[ProductCode],[DueDate],[GrossSellingPrice],[OrderedQty],[DeliveredQty])
select [OrderNumber],convert(varchar(25),[LineNo]),[ProductCode]
,isnull(convert(nvarchar,(datepart(dd,DueDate)))
+ '/' + convert(nvarchar,(datepart(mm,DueDate)))
+ '/' + convert(nvarchar,(datepart(yy,DueDate))),'')
,[GrossSellingPrice],[OrderedQty],[DeliveredQty]
from OrderLineHistory1
order by id asc
-- Reps
IF EXISTS (SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 'Reps')
drop table Reps
Create Table Reps
(ID int identity(1,1),
[Code] nvarchar(17),
[Name] nvarchar(30))
insert into Reps([code],[Name])
values ('Code','Name')
insert into Reps([code],[Name])
select distinct customtext2,customtext2
from customer
where customtext2 <> ''
order by customtext2
--Catalogues
IF EXISTS (SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 'Catalogues')
drop table Catalogues
Create Table Catalogues
(ID int identity(1,1),
[Code] nvarchar(17),
[Description] nvarchar(30))
insert into Catalogues([code],[Description])
values ('Code','Description')
insert into Catalogues([code],[Description])
select distinct left(subdescription1,4),subdescription1
from item
where subdescription1 <> ''
union
select 'NA', 'Not Assigned'
order by subdescription1
-- select * from reps
-- select * from Catalogues
-- select * from FamilyCode
-- select * from CatalogueProducts
-- select * from customers
-- select * from products
-- select * from pastorders
-- select * from orderlinehistory
只是为了让人们知道他OrderLineHistory1表造成的主要问题，它以5分钟左右运行时，customers1表大约需要30秒，但我仍然可以用这个做效率更高 –
你做了什么改变，使你的SP开始缓慢运行？ –
是你的表格：orderentry，order，pastorders在你加入的列上索引的吗？ –