sqlserver統計信息

⑴ sqlserver 統計報表的 sql語句怎麼寫

--動態語句
declare@sqlvarchar(8000)
select@sql=isnull(@sql+'],[','')+NAMEfromT_CSDN_ONEgroupbyNAME
set@sql='['+@sql+']'
EXEC('select*from(select*fromT_CSDN_ONE)apivot(SUM(ISNULL(MONERY,0)forNAMEin('+@sql+'))b')

⑵ 求問SQLServer多個表中將重復的數據提取到新表，並統計重復次數

給你個我這邊用的方法
use XLERP
--1、查詢重復數據
SELECT cInvCode, cAcc_Id,count(*)FROM Attribute GROUP BY cInvCode, cAcc_Id HAVING count(*) > 1
--2、選擇重復值到臨時表
SELECT cInvCode, cAcc_Id,bSale, bPurchase, bSelf, bComsume, bProcing, bService, bAccessary, bInvType, bPropertyCheck, bPlanInv, bProxyForeign, bATOModel, bCheckItem, bPTOModel, bMPS, bROP, bCutMantissa, bInvModel, iInvNCost, iTopSum, iLowSum, iSafeNum, fOutExcess, cInvABC, dSDate, dEDate, cCreatePerson, cModifyPerson, dModifyDate,col3=count(*) INTO holdkey FROM Attribute GROUP BY cInvCode, cAcc_Id,bSale, bPurchase, bSelf, bComsume, bProcing, bService, bAccessary, bInvType, bPropertyCheck, bPlanInv, bProxyForeign, bATOModel, bCheckItem, bPTOModel, bMPS, bROP, bCutMantissa, bInvModel, iInvNCost, iTopSum, iLowSum, iSafeNum, fOutExcess, cInvABC, dSDate, dEDate, cCreatePerson, cModifyPerson, dModifyDate HAVING count(*) > 1
--3、選擇重復的行放入臨時表中，以清除進程中的重復值
SELECT DISTINCT Attribute.* INTO holdps FROM Attribute, holdkey WHERE Attribute.cInvCode = holdkey.cInvCode AND Attribute.cAcc_Id = holdkey.cAcc_Id
--4、驗證 holdps 中的各個鍵是否唯一
SELECT cInvCode, cAcc_Id, count(*) FROM holdps GROUP BY cInvCode, cAcc_Id
--5、從原始表中刪除重復的行
DELETE Attribute FROM Attribute, holdkey WHERE Attribute.cInvCode = holdkey.cInvCode AND Attribute.cAcc_Id = holdkey.cAcc_Id
--6、將唯一行放回原始表中
INSERT Attribute SELECT * FROM holdps
--7、刪除臨時表
drop table holdps
drop table holdkey

⑶ sqlserver 自動非同步更新統計信息有什麼用

首先是針對全文檢索，新版建立 Catalog 內容時，擴展（Index
population）的速度較舊版快一倍以上，而查詢效率也提升
30%-50%。
另外，全文檢索服務支持多實例（multi-instanced）