UsefulSQL

FindObject:

---在当前Server上找某某object,注意只需修改"要找的object"就可以使用
EXEC sp_MSforeachdb 'use ? ;
IF EXISTS(SELECT top 1 1 FROM sys.syscomments WHERE text LIKE ''%要找的object%'')
SELECT ''?'' as dbname,object_name(id) as object FROM sys.syscomments
WHERE text LIKE ''%要找的object%'''

XML处理：

INSERT INTO IMK.[dbo].[ClaimAttachment]
([ClaimNumber]
,[AttachmentName]
,[Path]
,[Status]
,[InDate]
,[InUser]
,[CompanyCode]
,[LanguageCode])
SELECT
@ClaimNumber
,T.c.value('(AttachmentName/text())[1]', 'nvarchar(300)') AS AttachmentName
,T.c.value('(Path/text())[1]', 'nvarchar(50)') AS [Path]
,T.c.value('(Status/text())[1]', 'char(1)') AS [Status] -- 'O' AS Status
,GETDATE() AS [InDate]
,@IssueUser
,@CompanyCode
,@LanguageCode
FROM
@AttachmentList.nodes('/ArrayOfClaimAttachmentEntity/ClaimAttachmentEntity') T (c)

XML简单序列化：

XmlSerializer ser = new XmlSerializer(typeof(CreateTaskListRequest));
StringBuilder xml = new StringBuilder();
TextWriter stream = new StringWriter(xml);
ser.Serialize(stream, requestList.CreateTaskByTemplateIDRequests[0]);
string s = xml.ToString();

SQL Training:

1、建议将:
insert into log_SOInvoice (sonumber, wh ,invoicenumber)
select top 5000 sonumber,'50' , 1000 from newsql.newegg.dbo.changeorderloghistory
where sonumber in ( select sonumber from act..newegg_invoicemaster(nolock))
and changeordertime> getdate() - 30
and sonumber not in ( select sonumber from log_SOInvoice (nolock) where wh = '50')

CPU time = 484 ms, elapsed time = 2230 ms.
修改为：
insert into log_SOInvoice (sonumber, wh ,invoicenumber)
select top 5000 sonumber,'50' , 1000 from newsql.newegg.dbo.changeorderloghistory
where changeordertime> getdate() - 30
and sonumber not in ( select sonumber from log_SOInvoice (nolock) where wh = '50')
and sonumber in ( select sonumber from act..newegg_invoicemaster(nolock))

2、select ReferenceSoNumber,ItemNumber,SerialNumber,ScanDate,ScanUser,LargeItemFlag,WarehouseNumber,
ShippingUser,ShippingDate,TransactionNumber
from DropShipSerialNumber07
where shippingDate>'12/18/2003'
and transactionnumber not in (select transactionnumber from warehouse4..UploadSerialnumberLog07
where datediff(day,indate,getdate())<8)
and datediff(day,shippingdate,getdate())<7
执行结果：CPU time = 21437 ms, elapsed time = 33927 ms.

修改为：
select ReferenceSoNumber,ItemNumber,SerialNumber,ScanDate,ScanUser,LargeItemFlag,WarehouseNumber,
ShippingUser,ShippingDate,TransactionNumber
from DropShipSerialNumber07 (nolock index(ShippingDate))
where shippingdate>dateadd(day,-7,getdate())
--shippingDate>'12/18/2003'
and transactionnumber not in (select transactionnumber from warehouse4..UploadSerialnumberLog07(nolock)
where indate>dateadd(day,-8,getdate()))
执行结果： CPU time = 875 ms, elapsed time = 2005 ms.

3.建议将：
insert into log_SOInvoice (sonumber, wh ,invoicenumber)
select top 5000 a.sonumber,a.warehousenumber ,b.invoicenumber from newegg_sotransaction a(nolock)
inner join newegg_somaster b (nolock) on a.sonumber = b.sonumber
where b.status <> 'v' and a.warehousenumber is not null
and b.invoicenumber is not null and b.invoicenumber <> 0
and a.sonumber not in ( select sonumber from log_SOInvoice (nolock))
and warehousenumber > '' and warehousenumber is not null and warehousenumber <>'00' and warehousenumber <'90'
group by a.sonumber,a.warehousenumber,b.invoicenumber

CPU time = 18594 ms, elapsed time = 6215 ms.
修改为：
insert into log_SOInvoice (sonumber, wh ,invoicenumber)
select top 5000 a.sonumber,a.warehousenumber ,b.invoicenumber from newegg_sotransaction a(nolock)
inner join newegg_somaster b (nolock) on a.sonumber = b.sonumber
where not exists( select sonumber from log_SOInvoice (nolock) where a.sonumber = sonumber )
and b.status <> 'v' and a.warehousenumber is not null
and b.invoicenumber is not null and b.invoicenumber <> 0
and warehousenumber > '' and warehousenumber is not null and warehousenumber <>'00' and warehousenumber <'90'
group by a.sonumber,a.warehousenumber,b.invoicenumber

4.建议将：
update GCI set GCI.LeftAmount = GCI.LeftAmount + GD.SOAmount
From GiftCertificateItem GCI ,giftredeem GD
Where GCI.giftcode = GD.RedeemGiftCode
And GD.SONumber = @SONumber
And GD.Status ='O'
update GCI set GCI.status = Case when GCI.giftunitprice < GCI.leftamount Then 'A' Else 'U' End

From GiftCertificateItem GCI ,giftredeem GD
Where GCI.giftcode = GD.RedeemGiftCode
And GD.SONumber = @SONumber
And GD.Status ='O'
合并为：
update GCI set GCI.LeftAmount = GCI.LeftAmount + GD.SOAmount，
GCI.status = Case when GCI.giftunitprice < GCI.leftamount Then 'A' Else 'U' End
From GiftCertificateItem GCI ,giftredeem GD
Where GCI.giftcode = GD.RedeemGiftCode
And GD.SONumber = @SONumber
And GD.Status ='O'

5.建议将SQL语句修改为UNION ALL连接；
SELECT distinct a.ItemNumber,
b.itemcatalog,
ISNULL(c.ComboID,
0) AS ComboID,
c.ItemNumber AS ComboItem,
ISNULL(c.ItemCatalog,
0) AS comboItemCatalog
FROM ECommerce2005.dbo.IM_ItemBuyAlong a (nolock)
INNER JOIN abs.dbo.Arinvt01 b (nolock)
ON a.ItemNumber = b.Item
LEFT JOIN ECOMMERCE2005.DBO.IM_ComboTransaction c (NOLOCK)
ON ((c.ItemNumber = a.itemNumber
OR c.ItemCatalog = b.Itemcatalog)
AND c.ComboGroupid <> a.comboGroupid)
OR c.combogroupid IN (SELECT combogroupid
FROM ECOMMERCE2005.DBO.IM_ComboGiftItem(NOLOCK)
WHERE itemNumber = a.itemNumber
AND comboGroupid <> a.comboGroupid)
修改为：
SELECT a.ItemNumber,
b.itemcatalog,
ISNULL(c.ComboID,
0) AS ComboID,
c.ItemNumber AS ComboItem,
ISNULL(c.ItemCatalog,
0) AS comboItemCatalog
FROM ECommerce2005.dbo.IM_ItemBuyAlong a (nolock)
INNER JOIN abs.dbo.Arinvt01 b (nolock)
ON a.ItemNumber = b.Item
LEFT JOIN ECOMMERCE2005.DBO.IM_ComboTransaction c (NOLOCK)
ON ((c.ItemNumber = a.itemNumber
OR c.ItemCatalog = b.Itemcatalog)
AND c.ComboGroupid <> a.comboGroupid)
union

SELECT a.ItemNumber,
b.itemcatalog,
ISNULL(c.ComboID,
0) AS ComboID,
c.ItemNumber AS ComboItem,
ISNULL(c.ItemCatalog,
0) AS comboItemCatalog
FROM ECommerce2005.dbo.IM_ItemBuyAlong a (nolock)
INNER JOIN abs.dbo.Arinvt01 b (nolock)
ON a.ItemNumber = b.Item
LEFT JOIN ECOMMERCE2005.DBO.IM_ComboTransaction c (NOLOCK)
ON c.combogroupid IN (SELECT combogroupid
FROM ECOMMERCE2005.DBO.IM_ComboGiftItem(NOLOCK)
WHERE itemNumber = a.itemNumber
AND comboGroupid <> a.comboGroupid)

原SQL语句执行结果： CPU time = 11187 ms, elapsed time = 11264 ms.
修改为UNION ALL后执行结果：CPU time = 3486 ms, elapsed time = 2412 ms.

6.建议将SQL语句：
select * from scm..potran01 (nolock) where purno = 912926 order by TransactionNumber
修改为：

select * from scm..potran01 (nolock) where purno = '912926'

order by TransactionNumber
结果：修改前：CPU time = 1109 ms, elapsed time = 5319 ms.
修改后：CPU time = 0 ms, elapsed time = 40 ms.

7.可以考虑将SQL语句：
Select * From CodeCenter..ViewPropertiesInAdvSearch
Where CatalogID=22
Order By Priority,ValuePriority,ValueDescription
修改为：
Select * From CodeCenter..ViewPropertiesInAdvSearch
Where CatalogID=22
Order By Priority,ValuePriority,ValueDescription
option(maxdop 1)
结果：修改前：CPU time = 3284 ms, elapsed time = 14832 ms.
修改后：CPU time = 766 ms, elapsed time = 1183 ms.

8.建议将SQL语句：
SELECT ACount = (SELECT COUNT(*)
FROM ABS.dbo.arinvt01 a (nolock)
INNER JOIN codecenter..itemdescription b (nolock)
ON a.item = b.itemnumber
WHERE NEWEGGITEMMARK > 0
AND checked = 1),
VCount = (SELECT COUNT(*)
FROM ABS.dbo.arinvt01 a (nolock)
INNER JOIN codecenter..itemdescription b (nolock)
ON a.item = b.itemnumber
WHERE NEWEGGITEMMARK > 0
AND (ITEM LIKE '%sf'
OR ITEMCATALOG = 346
OR ITEM LIKE '50-%')
AND checked = 1),
InStock = (SELECT COUNT(*)
FROM ABS.dbo.arinvt01 A (nolock)
INNER JOIN inventory..ItemInventory B (NOLOCK)
ON A.ITEM = B.Item
INNER JOIN codecenter..itemdescription c (nolock)
ON a.item = c.itemnumber
WHERE A.NEWEGGITEMMARK > 0
AND B.newegg_avail > 0
AND A.ITEM NOT LIKE '%sf'
AND A.ITEMCATALOG <> 346
AND A.ITEM NOT LIKE '50-%'
AND checked = 1),
VirtualInStock = (SELECT COUNT(*)
FROM ABS.dbo.arinvt01 A (nolock)
INNER JOIN inventory..ItemInventory B (NOLOCK)
ON A.ITEM = B.Item
INNER JOIN codecenter..itemdescription c (nolock)
ON A.item = c.itemnumber
WHERE A.NEWEGGITEMMARK > 0
AND B.newegg_avail > 0
AND (A.ITEMCATALOG = 346
OR A.ITEM LIKE '%SF'
OR A.ITEM LIKE '50-%')
AND checked = 1),
Refurbish = (SELECT COUNT(*)
FROM ABS.dbo.arinvt01 A (nolock)
INNER JOIN inventory..ItemInventory B (NOLOCK)
ON A.ITEM = B.Item
INNER JOIN codecenter..itemdescription c (nolock)
ON a.item = c.itemnumber
WHERE A.NEWEGGITEMMARK > 0
AND B.newegg_avail > 0
AND A.ITEM LIKE '%R'
AND checked = 1)
修改为：
SELECT ACount = SUM(ACount),
VCount = SUM(VCount),
InStock = SUM(InStock),
VirtualInStock = SUM(VirtualInStock),
Refurbish = SUM(Refurbish)
FROM (SELECT ACount = COUNT(*),
VCount = COUNT(CASE
WHEN (ITEM LIKE '%sf'
OR ITEMCATALOG = 346
OR ITEM LIKE '50-%') THEN 1
END),
InStock = 0,
VirtualInStock = 0,
Refurbish = 0
FROM ABS.dbo.arinvt01 a (nolock)
INNER JOIN codecenter..itemdescription b (nolock)
ON a.item = b.itemnumber
WHERE NEWEGGITEMMARK > 0
AND checked = 1
UNION ALL
SELECT ACount = 0,
VCount = 0,
InStock = COUNT(CASE
WHEN (A.ITEM NOT LIKE '%sf'
AND A.ITEMCATALOG <> 346
AND A.ITEM NOT LIKE '50-%') THEN 1
END),
VirtualInStock = COUNT(CASE
WHEN (A.ITEMCATALOG = 346
OR A.ITEM LIKE '%SF'
OR A.ITEM LIKE '50-%') THEN 1
END),
Refurbish = COUNT(CASE
WHEN A.ITEM LIKE '%R' THEN 1
END)
FROM ABS.dbo.arinvt01 A (nolock)
INNER JOIN inventory..ItemInventory B (NOLOCK)
ON A.ITEM = B.Item
INNER JOIN codecenter..itemdescription c (nolock)
ON A.item = c.itemnumber
WHERE A.NEWEGGITEMMARK > 0
AND B.newegg_avail > 0
AND checked = 1) A
结果：修改前：CPU time = 13375 ms, elapsed time = 9772 ms.
修改后：CPU time = 8916 ms, elapsed time = 4776 ms.

9.建议将SQL语句：
SELECT SoNumber
FROM [CNSLS].[dbo].[SOMaster](NOLOCK)
WHERE CompanyCode = 1006
AND Status = 'O'
AND CreditCardVerifyMark = 'G'
AND status <> 'V'
AND (InvoiceNumber IS NULL
OR InvoiceNumber = 0)
AND AcctPostDate IS NOT NULL
AND SoNumber NOT IN (SELECT SoNumber
FROM [CNSLS].[dbo].[DownloadSO](NOLOCK))
修改为：
SELECT SoNumber
FROM [CNSLS].[dbo].[SOMaster] a(NOLOCK)
WHERE CompanyCode = 1006
AND Status = 'O'
AND CreditCardVerifyMark = 'G'
-- AND status <> 'V'
AND (InvoiceNumber IS NULL
OR InvoiceNumber = 0)
AND AcctPostDate IS NOT NULL
AND not exists (SELECT SoNumber
FROM [CNSLS].[dbo].[DownloadSO](NOLOCK) where SoNumber=a.SoNumber)
option (maxdop 1)

结果：修改前：CPU time = 3200 ms, elapsed time = 4496 ms.
修改后：CPU time = 1297 ms, elapsed time = 1382 ms.

10.由于abs..PO_Detail_Query中的potran01表中的ITEM字段的值长度最大为10，因此建议将：
SELECT TOP 200 *
FROM abs..PO_Detail_Query
WHERE Item LIKE '[0-9]%'
AND Item LIKE '%19-103-759%'
AND purdate >= '10/16/2006 7:21:39 AM'
AND purdate <= '1/17/2007 7:21:39 AM'
修改为：
SELECT TOP 200 *
FROM abs..PO_Detail_Query
WHERE Item = '19-103-759'
AND purdate >= '10/16/2006 7:21:39 AM'
AND purdate <= '1/17/2007 7:21:39 AM'

结果：修改前：CPU time = 6047 ms, elapsed time = 10633 ms.
修改后：CPU time = 0 ms, elapsed time = 5 ms.
2、Personal表后未加NOLOCK；

11.建议将SQL语句：
SELECT Item = rtrim(b.ItemNumber) + 'R',
RefurbishIn = SUM(b.Quantity),
RefurbishOut = 0,
RefurbishAdjust = 0
FROM [abs].dbo.RefurbishMaster AS a (NOLOCK)
INNER JOIN [abs].dbo.RefurbishTransaction AS b (NOLOCK)
ON a.RTNumber = b.RTNumber
WHERE a.ReceivingDate >= @pThisMonthBeginDate
AND a.ReceivingDate < @pOneDayAfterEffectDate
AND b.ItemNumber LIKE '%-%'
GROUP BY b.ItemNumber

UNION ALL
SELECT Item = b.ItemNumber,
RefurbishIn = 0,
RefurbishOut = SUM(b.Quantity),
RefurbishAdjust = 0
FROM abs.dbo.RefurbishMaster AS a (nolock)
INNER JOIN [abs].dbo.RefurbishTransaction AS b (nolock)
ON a.RTNumber = b.RTNumber
WHERE a.ReceivingDate >= @pThisMonthBeginDate
AND a.ReceivingDate < @pOneDayAfterEffectDate
AND a.Source = '3'
AND b.ItemNumber LIKE '%-%'
GROUP BY b.ItemNumber
修改为：
SELECT Item =CASE WHEN a.Source = '3' THEN b.ItemNumber ELSE rtrim(b.ItemNumber) + 'R' END,
RefurbishIn = CASE WHEN a.Source = '3' THEN 0 ELSE SUM(b.Quantity) END,
RefurbishOut = CASE WHEN a.Source = '3' THEN SUM(b.Quantity) ELSE 0 END,
RefurbishAdjust = 0
FROM [abs].dbo.RefurbishMaster AS a (NOLOCK)
INNER JOIN [abs].dbo.RefurbishTransaction AS b (NOLOCK)
ON a.RTNumber = b.RTNumber
WHERE a.ReceivingDate >= '2007-01-01'--@pThisMonthBeginDate
AND a.ReceivingDate < '2007-01-18'--@pOneDayAfterEffectDate
AND b.ItemNumber LIKE '%-%'
GROUP BY b.ItemNumber, a.Source
经查，调整后结果是一致的；

结果：调整前：CPU time = 846 ms, elapsed time = 2161 ms.
调整后：CPU time = 484 ms, elapsed time = 901 ms.

12.由于使用sp_executesql函数时，字符型的参数变量是nchar或nvarchr的，但由于ZipCode，ShippingAddress是char型，因此查询时是不会使用索引的。因此建议将SQL：
exec sp_executesql N'
SELECT *
FROM imk.dbo.viewDetectFrud (nolock)
WHERE ZipCode like rtrim(@ZipCode) + ''%''
and (ShippingAddress like rtrim(@FirstAddress) + ''%''
or ShippingAddress like rtrim(@SecondAddress) + ''%'') ',
N'@ZIPCODE nvarchar(10),@FIRSTADDRESS nvarchar(80),@SECONDADDRESS nvarchar(80)',
@ZIPCODE = N'97070', @FIRSTADDRESS = N'287', @SECONDADDRESS = N''
修改为：
declare @ZIPCODE varchar(10),@FIRSTADDRESS varchar(80),@SECONDADDRESS varchar(80)
set @ZIPCODE = '97070'
set @FIRSTADDRESS = '287'
set @SECONDADDRESS = ''
--exec sp_executesql N'
exec ('
SELECT *
FROM imk.dbo.viewDetectFrud (nolock)
WHERE ZipCode like ''' + @ZipCode + '%''
and (ShippingAddress like ''' + @FirstAddress + '%''
or ShippingAddress like '''+ @SecondAddress + '%'')')

结果：修改前：CPU time = 15781 ms, elapsed time = 6395 ms.
修改后：CPU time = 13 ms, elapsed time = 13 ms.