sqlserver统计信息

⑴ sqlserver 统计报表的 sql语句怎么写

--动态语句
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 求问SQLServer多个表中将重复的数据提取到新表，并统计重复次数

给你个我这边用的方法
use XLERP
--1、查询重复数据
SELECT cInvCode, cAcc_Id,count(*)FROM Attribute GROUP BY cInvCode, cAcc_Id HAVING count(*) > 1
--2、选择重复值到临时表
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、选择重复的行放入临时表中，以清除进程中的重复值
SELECT DISTINCT Attribute.* INTO holdps FROM Attribute, holdkey WHERE Attribute.cInvCode = holdkey.cInvCode AND Attribute.cAcc_Id = holdkey.cAcc_Id
--4、验证 holdps 中的各个键是否唯一
SELECT cInvCode, cAcc_Id, count(*) FROM holdps GROUP BY cInvCode, cAcc_Id
--5、从原始表中删除重复的行
DELETE Attribute FROM Attribute, holdkey WHERE Attribute.cInvCode = holdkey.cInvCode AND Attribute.cAcc_Id = holdkey.cAcc_Id
--6、将唯一行放回原始表中
INSERT Attribute SELECT * FROM holdps
--7、删除临时表
drop table holdps
drop table holdkey

⑶ sqlserver 自动异步更新统计信息有什么用

首先是针对全文检索，新版建立 Catalog 内容时，扩展（Index
population）的速度较旧版快一倍以上，而查询效率也提升
30%-50%。
另外，全文检索服务支持多实例（multi-instanced）