Could Someone Explain This Script To Me

Jan 29, 2008

Hi,

Could someone help me understand this script:

DECLARE @TempValue tinyint

SELECT @TempValue = 1
FROM dbo.TABLE_NAME (tablockx updlock holdlock)
WHERE 1 = 2

To my understanding, it would lock all the row in the table at once.

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why do the following return the same datasets?
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in the first I'm specifically searching empty strings, in the second a sequence of five spaces. Yet both return any and all white character matches? Is this a "feature" of SQL...
P.S. I'm using T-SQL

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As previous threads have indicated I've been trying to figure out what's slowing down our 3rd party ETL tool.

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Here's what's going on...
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Until a few days ago we didn't even know SPID 1 existed. These are different guys, using old version of Crystal passing crappy queries.

Here's the scenario
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30 minutes pass and SPID 2 is still waiting PAGEIOLATCH_SH
SPID 3 fires off

Now SPID 2 is blocking SPID 3, but SPID 2 is still waiting for SPID 1

Finally when SPID 1 finishes, everything catches up. But it appears that there is a period of at least 45 minutes when all SPID's are just sleeping.

My questions:
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Thanks in advance

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CREATE procedure r_routeGetCache1
@pLongest varchar(32),
@pLongestCls int,
@pDate datetime,
@pSrcInt varchar(7),
@pSrcIntGroup varchar(64),
@pSrcIntDom varchar(64),
@routeclass int=0 ,
@pCLI varchar(32)='',
@pOperatorGroup int = 0 ,
@isgrade int=0

as
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declare @pc varchar(2)
declare @dd int
declare @hh int
declare @mm int

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--- End

--insert
CREATE TABLE #operator_selected (
[routecls] [int] NOT NULL ,
[oprId] [int] NOT NULL ,
[cls] [varchar] (1) NOT NULL ,
[pc] [varchar] (2) NOT NULL
)

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select x.routecls,x.oprid,x.cls,x.pc
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RoutingV3..r_interface tit with (nolock),
RoutingV3..r_timecode tco with (nolock),
RoutingV3..r_daycode dco with (nolock)
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and tco.h2-1
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CREATE TABLE #timecls_selected (
[routecls] [int] NOT NULL ,
[oprId] [int] NOT NULL ,
[pc] [varchar] (2) NOT NULL ,
[prefixcode] [varchar] (50) NOT NULL ,
cnt int,
clsA int,
clsP int,
clsO int,
clsW int,
[cls] [varchar] (1)
)

insert into
#timecls_selected(routecls,oprid,pc,prefixcode,cnt,clsA,clsP,clsO,clsW,cls)
select a.routecls, a.oprid, a.pc, max(a.prefixCode) prefixCode,
count(*) cnt,
sum(case when a.cls='A' then 1 else 0 end) clsA,
sum(case when a.cls='P' then 1 else 0 end) clsP,
sum(case when a.cls='O' then 1 else 0 end) clsO,
sum(case when a.cls='W' then 1 else 0 end) clsW, 'Z' cls
from RoutingV3..r20_route12 a(nolock), #operator_selected b
where a.routeCls=@routeclass --b.routeCls
and a.oprId=b.oprId and a.cls=b.cls
and a.pc=b.pc
and left(@pLongest,prefixLen)=a.prefixcode
--- Exclude Artificial
--and not (id<0 and parentId is not null and parentId>0)
group by a.routecls, a.oprid, a.pc

update #timecls_selected
set cls = (case when (clsW>0) and (cnt = clsW) then 'W'
when (clsO>0) and (cnt = clsO) then 'O'
when (clsP>0) and (cnt = clsP) then 'P'
when (clsA>0) and (cnt = clsA) then 'A'
else 'Z' end)

update #timecls_selected
set cls = (select max(a.cls) from RoutingV3..r20_route12 a (nolock)
where a.routecls=#timecls_selected.routecls
and a.oprid = #timecls_selected.oprId
and a.pc=#timecls_selected.pc
and a.prefixCode=#timecls_selected.prefixCode
and ((a.cls='A' and #timecls_selected.clsA<>0) or
(a.cls='P' and #timecls_selected.clsP<>0) or
(a.cls='O' and #timecls_selected.clsO<>0) or
(a.cls='W' and #timecls_selected.clsW<>0))
)
where cls = 'Z'

CREATE TABLE #route (
seqno int identity(10,10),
priority int,
[id] int,
isactive int,
reason int,
exception int,
exceptionCls int,
calcexception int,
ext int,
oprid int,
parentid int,
routecls int,
prefixcode varchar(50),
universe varchar(5),
domain varchar(5),
pdomain varchar(5),
[group] varchar(40),
interface varchar(40),
userinfo varchar(40),
hint varchar(100),
clsorg char(1),
cls char(1),
cost float,
flag int,
rating int,
access varchar(10),
redlist int ,quality float)


if @isgrade =0
begin
insert into #route(isactive,reason, exception, exceptionCls, calcexception,[id],parentid,routecls,oprid,prefixcode,clsorg,cls,cost,
priority,rating,flag,ext,quality)
select
case when x.oprid>0 then x.state
else case when quality=99 then 0 else x.state end
end isactive,
x.reason,
isnull(x.exception,0) exception,
--case when x.oprId>0 then isnull(x.exceptionCls,0) else (case when x.quality=99 then 0 else isnull(x.exceptionCls,0) end) end exceptionCls,
isnull(x.exceptionCls,0) exceptionCls,
case when (isnull(x.exception,0) = 0) then 0
when x.exception > 0 then cast((x.exception+0.5)*10 as int)
else case when x.Id>0 then cast((x.exception-0.5)*10 as int) else 0 end
end [calcException],
x.id, x.parentId, x.routeCls, x.oprId, x.prefixCode, x.clsOrg, x.cls,
x.cost, x.priority, rating, x.flag, x.ext,x.quality
from RoutingV3..r20_route12 x(nolock), #timecls_selected b
where x.routecls=b.routecls and x.oprid=b.oprid and x.pc=b.pc and
x.prefixcode=b.prefixcode and x.cls=b.cls
order by x.cost
end
else
begin
insert into #route(isactive,reason, exception, exceptionCls, calcexception,[id],parentid,routecls,oprid,prefixcode,clsorg,cls,cost,
priority,rating,flag,ext,quality)
select
case when x.oprid>0 then x.state
else case when quality=99 then 0 else x.state end
end isactive,
x.reason,
isnull(x.exception,0) exception,
--case when x.oprId>0 then isnull(x.exceptionCls,0) else (case when x.quality=99 then 0 else 10 end) end exceptionCls,
isnull(x.exceptionCls,0) exceptionCls,
case when (isnull(x.exception,0) = 0) then 0
when x.exception > 0 then cast((x.exception+0.5)*10 as int)
else case when x.Id>0 then cast((x.exception-0.5)*10 as int) else 0 end
end [calcException],
x.id, x.parentId, x.routeCls, x.oprId, x.prefixCode, x.clsOrg, x.cls,
x.cost, x.priority, rating, x.flag, x.ext,x.quality
from RoutingV3..r20_route12 x(nolock), #timecls_selected b
where x.routecls=b.routecls and x.oprid=b.oprid and x.pc=b.pc
and x.prefixcode=b.prefixcode and x.cls=b.cls
order by x.quality,x.cost
end

set nocount on
select top 5
'r20_route12' routeset,
x.seqno priority, x.id, x.isactive, x.reason, x.exception, x.exceptionCls, x.calcexception,
isnull(x.ext,0) ext,
x.routecls, x.prefixcode, y.universe, y.domain, y.pdomain,
y.[group], y.name interface, y.userinfo, y.hint, x.clsOrg, x.cls
timecls, x.cost, x.flag, x.rating,
'11111' access, 0 redlist,x.quality grade
into #topN
from #route x, RoutingV3..r_interface y with (nolock)
where x.isActive=1
and x.oprId=y.id
and @pLongest like x.prefixcode+'%'
and exceptionCls<>0
order by seqno+[calcException], x.cost

select
'r20_route12' routeset,
x.seqno priority, x.id, x.isactive, x.reason, x.exception, x.exceptionCls, x.calcexception,
isnull(x.ext,0) ext,
x.routecls, x.prefixcode, y.universe, y.domain, y.pdomain,
y.[group], y.name interface, y.userinfo, y.hint, x.clsOrg, x.cls
timecls, x.cost, x.flag, x.rating,
'11111' access, 0 redlist,x.quality grade
into #all
from #route x, RoutingV3..r_interface y with (nolock)
where x.oprId=y.id
and @pLongest like x.prefixcode+'%'
order by seqno+[calcException], x.cost

delete #all
from #topN a, #all b
where a.id = b.id


set nocount off

select * from #topN where isActive=1
union all
select * from #all where isActive=1
end

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Aug 24, 2006

db_TBOdb_TBT-------------------------------------------------------------------------------------TBOID | Date TBTID| TBOID| Date-------------------------------------------------------------------------------------rp01 | 01/08/2006 ap01 |rp01|02/08/2006many rows ap02 | rp01 |05/08/2006ap03 |rp03|04/08/2006I want to find TBTTD field of table db_TBTwho have of db_TBO date db_TBT table dateand TBOID should be 'rp01' of both tableswhen I give a query as it works as I neededSelect TBT.Datefrom db_TBO TBO , db_TBT TBTwhere TBT.TBOID = 'rp01'and TBO.TBOID ='rp01'and TBO.Date TBT.DateMy doubt is when I run the following query" Select TBT.Date from db_TBO TBO , db_TBT TBT where TBT.TBOID = 'rp01'"it gives me more than 7 recordswhen I run the query using some change" Select TBT.Date , TBT.TBID from db_TBO TBO , db_TBT TBT whereTBT.TBOID = 'rp01' "it gives more rows than previous rowCan u give me any explations.ThanksPai

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May 26, 2006

I have a application that uses a connection that is always active until the application is closed, and many other connections that are opened and closed as different data is requested. I DO close and dispose these connections, datasets, and data readers after requesting data to release the resources. BUT they still show in SQL Server 2005 Express Edition. I believe they are NOT active and are part of the Pooling system.

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Dec 25, 2007

hi,
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AttachDBFilename=|DataDirectory|DNN12_24_07.mdf  ,
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Nov 7, 2001

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Below is the error message that was recieved after backup exec attempted to backup up this server.


Media Name: "DIFF"
Backup of "SQLserver1E$ "
Backup set #49 on storage media #1
Backup set description: "Daily 5"
Backup Type: DIFFERENTIAL - Changed Files
Backup started on 11/05/2001 at 11:46:00 PM.
The item MSSQL7Datadatabase1_Data.MDF in use - skipped.
The item MSSQL7Datadatabase1_Log.LDF in use - skipped.
The item MSSQL7Datadatabase2_Data.MDF in use - skipped.
The item MSSQL7Datadatabase2_Log.LDF in use - skipped.
The item MSSQL7Datamaster.mdf in use - skipped.
The item MSSQL7Datamastlog.ldf in use - skipped.
The item MSSQL7Datamodel.mdf in use - skipped.
The item MSSQL7Datamodellog.ldf in use - skipped.
The item MSSQL7Datamsdbdata.mdf in use - skipped.
The item MSSQL7Datamsdblog.ldf in use - skipped.
The item MSSQL7Dataorthwnd.ldf in use - skipped.
The item MSSQL7Dataorthwnd.mdf in use - skipped.
The item MSSQL7Datapubs.mdf in use - skipped.
The item MSSQL7Datapubs_log.ldf in use - skipped.
The item MSSQL7Datasysdev_Data.MDF in use - skipped.
The item MSSQL7Datasysdev_Log.LDF in use - skipped.
The item MSSQL7DataTEMPDB.MDF in use - skipped.
The item MSSQL7DataTEMPLOG.LDF in use - skipped.
Access denied to directory emp.
^ ^ ^ ^ ^

Backup completed on 11/05/2001 at 11:47:02 PM.
Backed up 55 files in 48 directories.
19 items were skipped.
Processed 84,537,951 bytes in 1 minute and 2 seconds.

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waiting for reply....

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