無(wú)法啟動(dòng)sql server(mssqlserver)服務(wù) 錯(cuò)誤3:系統(tǒng)找不到指定的路徑

解決方案

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既然知道了問(wèn)題所在，那么久好解決了。找到SQL SERVER安裝路徑，Binn目錄下，找到這個(gè)文件：

右鍵用超級(jí)管理員賬戶運(yùn)行，就可以發(fā)現(xiàn)Sql server提供服務(wù)了！

sqlserverstart

雖然運(yùn)行成功了，但是總不能每次去運(yùn)行吧。所以我再寫一段批處理，保存為bat文件運(yùn)行即可。批處理內(nèi)容：

@echo off

SC CREATE mssqlserver binPath= "D:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\Binn\sqlservr.exe" DisplayName= "SQL Server" start= auto

REG ADD HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\mssqlserver /v Description /t REG_SZ /d "用于提供SQL SERVER服務(wù)的服務(wù)，如果停止，則無(wú)法提供SQL SERVER服務(wù)。"

NET START mssqlserver

注意：以上代碼中路徑部分，請(qǐng)修改為本機(jī)Sqlserver安裝路徑。

sqlserver三表聯(lián)查sql語(yǔ)句

假設(shè)學(xué)生表叫student,課程表叫class,選課表叫choose

1.三層嵌套的問(wèn)題

select student.name from student where student.id IN

(select choose.sid from choose where choose.cid NOT IN

(select class.id from class where class.teacher='李明'))

2.一個(gè)內(nèi)連接，一個(gè)嵌套

select student.name,avg(choose.score) from

student inner join choose on student.id=choose.sid

where student.id IN

(select choose.sid from choose

where choose.score'60'

group by choose.sid

having count(choose.sid)=2)

gruop by student.id

3.一個(gè)聯(lián)合查詢，一個(gè)嵌套查詢

select student.name from student

where student.id IN

(select c1.sid from choose c1 where choose.cid='1'

union

select c2.sid from choose c2 where choose.cid='2'

on c1.sid=c2.sid

)

4.其實(shí)就是自連接查詢和行列交換的問(wèn)題：

select student.id,

(case choose.id when '1' then choose.score end) as 1號(hào)課成績(jī),

(case choose.id when '2' then choose.score end) as 2號(hào)課成績(jī),

from student inner join choose on student.id=choose.sid sc1,

student inner join choose on student.id=choose.sid sc2

where sc1.id='1'

and sc2.id='2'

and sc1.scoresc2.score

關(guān)于.asp中的sqlserver3張表的多表查詢

具體要查哪個(gè)字段，你自己修改吧，我?guī)湍惆驯碇g的鏈接條件寫出來(lái)。

select a.*, b.*, c.* from a, b, c where a.a1 = b.b1 and a.a2 = c.c2 and a2 = an