Problem with SqlDataSource using sub-query and date as parameters

I am creating a search page for master detail tables. The search criteria is mainly on the header table. However, there is also one criteria which is in detail table, let said product number.

In my SqlDataSource, I setup the SQL like this.

select fieldA, fieldB, ..., fieldZ from masterTable where (1 = 1)

Then, the additional search criteria is appended to the SqlDataSource select command once the user click the search button. If user wants to search product number, the following will be appended

and exists (select 1 from detailTable where pid = masterTable.id and productNo = @.productNo)

The problem is when I provides both the sub-query criteria and 2 date fields criteria. The page will raise an timeout exception. I don't have any clue on this as I can copy the SQL and run it inside the SQL Server Management Studio. The result come up in a second.

Any suggestion on tackling this problem? Thanks!

hi,

U can avoid this by diffarent options...By above information I can explain like this

1 use UNION

2 Use Primary Key in your every Subquery Query followed by the Search.

3 Use Joins with valid Key Elements.etc

or send the required result columnes and the Table Design

bye

murthy

|||

Hi Murthy,

1. use UNION

I don't know how should I use UNION in master-detail structure. Please give more detail.

2. The primary key is already used in the where clause of the subquery. The column pid means the primary key ID in master table.

3. Use Join

The use of join is not desirable. I have to group the records back together afterward. I just want to search the master table but use detail record as criteria. If I join them without group, the master record will repeat themselves in the result.

Actually, I'm strange about the performance difference by using ADO.NET and SQL Server management studio.

|||

Hi,

OK

Do this Use "#' table with one primary key ID as the Column column in all the condictions

and finally join all the Table with the key Elements..

Ex:

select <Key>,<Search column 1 > into #TableA from <Master table> where <Condition>

select <Key>,<Search column 2 > into #TableB from <Master table> where <Condition>

.....

....

and Finally

select <Search Column1>,<Search Column2>.<Search Column3>,... from #TableA, #TableB, #TableC...where #TableA.Key=#TableB.Key,#TableA.Key=#TableC.key etc

drop all temp table

your result is ready now...

|||

This approach seems making the simple request into a complex one.

Problem with Script

Hey all,
Can anyone explain me why this doesnt work:
declare db_defrag cursor for
select [name] from master..sysdatabases where dbid
NOT IN (1,2,3,4,5,6) for read only
declare @.dbname varchar(50)
open db_defrag
fetch next from db_defrag into @.dbname
while @.@.fetch_status = 0
*****declare show_defrag cursor for
exec ('select [name] from ' + @.dbname
+ '..sysobjects where type =''U''') for read only *** how
come i cannot use the variable @.dbname in the second
cursor without getting an error? Any workarround?
Please help,
Thanxs> *****declare show_defrag cursor for
> exec ('select [name] from ' + @.dbname
> + '..sysobjects where type =''U''') for read only *** how
> come i cannot use the variable @.dbname in the second
> cursor without getting an error? Any workarround?
> Please help,
Do the whole lot inside dynamic SQL:
SET @.sql = 'DECLARE show_defrag cursor for SELECT "name" FROM ' + @.dbname +
'..sysobjects WHERE ...'
EXEC(@.sql)
However, you don't have to loop inside the database for DBCC SHOWCONTIG.
Just use DBCC SHOWCONTIG at the database level using the WITH TABLERESULTS
option.
Tibor Karaszi, SQL Server MVP
Archive at:
http://groups.google.com/groups?oi=djq&as_ugroup=microsoft.public.sqlserver
":)" <anonymous@.discussions.microsoft.com> wrote in message
news:5b3a01c3ad27$de17fe30$a601280a@.phx.gbl...
> Hey all,
> Can anyone explain me why this doesnt work:
> declare db_defrag cursor for
> select [name] from master..sysdatabases where dbid
> NOT IN (1,2,3,4,5,6) for read only
> declare @.dbname varchar(50)
> open db_defrag
> fetch next from db_defrag into @.dbname
> while @.@.fetch_status = 0
> *****declare show_defrag cursor for
> exec ('select [name] from ' + @.dbname
> + '..sysobjects where type =''U''') for read only *** how
> come i cannot use the variable @.dbname in the second
> cursor without getting an error? Any workarround?
> Please help,
> Thanxs|||It dont seem to work... the process just
stays "pending"... Here is the whole script.. any help
would be greatful:
set nocount on
CREATE TABLE #aux (
[ObjectName] [varchar] (100) COLLATE
SQL_Latin1_General_CP1_CI_AS NULL ,
[ObjectId] [varchar] (100) COLLATE
SQL_Latin1_General_CP1_CI_AS NULL ,
[IndexName] [varchar] (100) COLLATE
SQL_Latin1_General_CP1_CI_AS NULL ,
[IndexId] [varchar] (15) COLLATE
SQL_Latin1_General_CP1_CI_AS NULL ,
[Level] [varchar] (10) COLLATE
SQL_Latin1_General_CP1_CI_AS NULL ,
[Pages] [varchar] (100) COLLATE
SQL_Latin1_General_CP1_CI_AS NULL ,
[Rows] [varchar] (100) COLLATE
SQL_Latin1_General_CP1_CI_AS NULL ,
[MinimumRecordSize] [varchar] (100) COLLATE
SQL_Latin1_General_CP1_CI_AS NULL ,
[MaximumRecordSize] [varchar] (100) COLLATE
SQL_Latin1_General_CP1_CI_AS NULL ,
[AverageRecordSize] [varchar] (300) COLLATE
SQL_Latin1_General_CP1_CI_AS NULL ,
[FowardedRecords] [varchar] (100) COLLATE
SQL_Latin1_General_CP1_CI_AS NULL ,
[Extents] [varchar] (100) COLLATE
SQL_Latin1_General_CP1_CI_AS NULL ,
[ExtentSwitches] [varchar] (100) COLLATE
SQL_Latin1_General_CP1_CI_AS NULL ,
[AverageFreeBytes] [varchar] (300) COLLATE
SQL_Latin1_General_CP1_CI_AS NULL ,
[AveragePageDensity] [varchar] (300) COLLATE
SQL_Latin1_General_CP1_CI_AS NULL ,
[ScanDensity] [varchar] (100) COLLATE
SQL_Latin1_General_CP1_CI_AS NULL ,
[BestCount] [varchar] (100) COLLATE
SQL_Latin1_General_CP1_CI_AS NULL ,
[ActualCount] [varchar] (100) COLLATE
SQL_Latin1_General_CP1_CI_AS NULL ,
[LogicalFragmentation] [varchar] (300) COLLATE
SQL_Latin1_General_CP1_CI_AS NULL ,
[ExtentFragmentation] [varchar] (300) COLLATE
SQL_Latin1_General_CP1_CI_AS NULL
) ON [PRIMARY]
GO
declare db_defrag cursor for
select [name] from master..sysdatabases where dbid
NOT IN (1,2,3,4,5,6) for read only
declare @.dbname varchar(50)
open db_defrag
fetch next from db_defrag into @.dbname
while @.@.fetch_status = 0
declare @.sql varchar (300)
SET @.sql = 'DECLARE show_defrag cursor for
SELECT [name] FROM ' + @.dbname
+ '..sysobjects WHERE type = ''U'' for read only'
declare @.objectname varchar(200)
declare @.msg varchar(200)
EXEC(@.sql)
--declare show_defrag cursor for
--select [name] from ..sysobjects where type = 'U'
for read only
open show_defrag
fetch next from show_defrag into @.objectname
while @.@.fetch_status = 0
Begin
INSERT INTO #aux
EXEC ('DBCC SHOWCONTIG (' + @.objectname
+ ') WITH TABLERESULTS')
if exists (select Objectname from #aux where
Objectname = @.objectname and
ExtentSwitches > Extents or
ScanDensity < cast (95.0 as Decimal) or
LogicalFragmentation > cast (10.0 as Decimal) or
ExtentFragmentation > cast (10.0 as Decimal))
Begin
set @.msg = 'The table ' + @.objectname + ' in
database' + @.dbname + ' is fragmented'
Print @.msg
--exec master..xp_logevent 51515, @.msg,
informational
End
fetch next from db_defrag into @.dbname
fetch next from show_defrag into @.objectname
End
deallocate db_defrag
deallocate show_defrag
drop table #aux
set nocount off
>--Original Message--
>> *****declare show_defrag cursor for
>> exec ('select [name] from ' + @.dbname
>> + '..sysobjects where type =''U''') for read only ***
how
>> come i cannot use the variable @.dbname in the second
>> cursor without getting an error? Any workarround?
>> Please help,
>Do the whole lot inside dynamic SQL:
>SET @.sql = 'DECLARE show_defrag cursor for SELECT "name"
FROM ' + @.dbname +
>'..sysobjects WHERE ...'
>EXEC(@.sql)
>However, you don't have to loop inside the database for
DBCC SHOWCONTIG.
>Just use DBCC SHOWCONTIG at the database level using the
WITH TABLERESULTS
>option.
>
>--
>Tibor Karaszi, SQL Server MVP
>Archive at:
>http://groups.google.com/groups?
oi=djq&as_ugroup=microsoft.public.sqlserver
>
>":)" <anonymous@.discussions.microsoft.com> wrote in
message
>news:5b3a01c3ad27$de17fe30$a601280a@.phx.gbl...
>> Hey all,
>> Can anyone explain me why this doesnt work:
>> declare db_defrag cursor for
>> select [name] from master..sysdatabases where dbid
>> NOT IN (1,2,3,4,5,6) for read only
>> declare @.dbname varchar(50)
>> open db_defrag
>> fetch next from db_defrag into @.dbname
>> while @.@.fetch_status = 0
>> *****declare show_defrag cursor for
>> exec ('select [name] from ' + @.dbname
>> + '..sysobjects where type =''U''') for read only ***
how
>> come i cannot use the variable @.dbname in the second
>> cursor without getting an error? Any workarround?
>> Please help,
>> Thanxs
>
>.
>|||One thing I see that that inside your WHILE, you need BEGIN and END:
WHILE ...
BEGIN
...
...
FETCH NEXT FROM ...
END
--
Tibor Karaszi, SQL Server MVP
Archive at: http://groups.google.com/groups?oi=djq&as_ugroup=microsoft.public.sqlserver
":)" <anonymous@.discussions.microsoft.com> wrote in message
news:0b9501c3adb6$987ae5b0$a101280a@.phx.gbl...
> It dont seem to work... the process just
> stays "pending"... Here is the whole script.. any help
> would be greatful:
>
>
> set nocount on
> CREATE TABLE #aux (
> [ObjectName] [varchar] (100) COLLATE
> SQL_Latin1_General_CP1_CI_AS NULL ,
> [ObjectId] [varchar] (100) COLLATE
> SQL_Latin1_General_CP1_CI_AS NULL ,
> [IndexName] [varchar] (100) COLLATE
> SQL_Latin1_General_CP1_CI_AS NULL ,
> [IndexId] [varchar] (15) COLLATE
> SQL_Latin1_General_CP1_CI_AS NULL ,
> [Level] [varchar] (10) COLLATE
> SQL_Latin1_General_CP1_CI_AS NULL ,
> [Pages] [varchar] (100) COLLATE
> SQL_Latin1_General_CP1_CI_AS NULL ,
> [Rows] [varchar] (100) COLLATE
> SQL_Latin1_General_CP1_CI_AS NULL ,
> [MinimumRecordSize] [varchar] (100) COLLATE
> SQL_Latin1_General_CP1_CI_AS NULL ,
> [MaximumRecordSize] [varchar] (100) COLLATE
> SQL_Latin1_General_CP1_CI_AS NULL ,
> [AverageRecordSize] [varchar] (300) COLLATE
> SQL_Latin1_General_CP1_CI_AS NULL ,
> [FowardedRecords] [varchar] (100) COLLATE
> SQL_Latin1_General_CP1_CI_AS NULL ,
> [Extents] [varchar] (100) COLLATE
> SQL_Latin1_General_CP1_CI_AS NULL ,
> [ExtentSwitches] [varchar] (100) COLLATE
> SQL_Latin1_General_CP1_CI_AS NULL ,
> [AverageFreeBytes] [varchar] (300) COLLATE
> SQL_Latin1_General_CP1_CI_AS NULL ,
> [AveragePageDensity] [varchar] (300) COLLATE
> SQL_Latin1_General_CP1_CI_AS NULL ,
> [ScanDensity] [varchar] (100) COLLATE
> SQL_Latin1_General_CP1_CI_AS NULL ,
> [BestCount] [varchar] (100) COLLATE
> SQL_Latin1_General_CP1_CI_AS NULL ,
> [ActualCount] [varchar] (100) COLLATE
> SQL_Latin1_General_CP1_CI_AS NULL ,
> [LogicalFragmentation] [varchar] (300) COLLATE
> SQL_Latin1_General_CP1_CI_AS NULL ,
> [ExtentFragmentation] [varchar] (300) COLLATE
> SQL_Latin1_General_CP1_CI_AS NULL
> ) ON [PRIMARY]
> GO
> declare db_defrag cursor for
> select [name] from master..sysdatabases where dbid
> NOT IN (1,2,3,4,5,6) for read only
> declare @.dbname varchar(50)
> open db_defrag
> fetch next from db_defrag into @.dbname
> while @.@.fetch_status = 0
> declare @.sql varchar (300)
> SET @.sql = 'DECLARE show_defrag cursor for
> SELECT [name] FROM ' + @.dbname
> + '..sysobjects WHERE type = ''U'' for read only'
> declare @.objectname varchar(200)
> declare @.msg varchar(200)
> EXEC(@.sql)
>
> --declare show_defrag cursor for
> --select [name] from ..sysobjects where type = 'U'
> for read only
>
> open show_defrag
> fetch next from show_defrag into @.objectname
> while @.@.fetch_status = 0
> Begin
> INSERT INTO #aux
> EXEC ('DBCC SHOWCONTIG (' + @.objectname
> + ') WITH TABLERESULTS')
>
> if exists (select Objectname from #aux where
> Objectname = @.objectname and
> ExtentSwitches > Extents or
> ScanDensity < cast (95.0 as Decimal) or
> LogicalFragmentation > cast (10.0 as Decimal) or
> ExtentFragmentation > cast (10.0 as Decimal))
> Begin
> set @.msg = 'The table ' + @.objectname + ' in
> database' + @.dbname + ' is fragmented'
> Print @.msg
> --exec master..xp_logevent 51515, @.msg,
> informational
> End
> fetch next from db_defrag into @.dbname
> fetch next from show_defrag into @.objectname
> End
> deallocate db_defrag
> deallocate show_defrag
> drop table #aux
>
> set nocount off
>
>
>
> >--Original Message--
> >> *****declare show_defrag cursor for
> >> exec ('select [name] from ' + @.dbname
> >> + '..sysobjects where type =''U''') for read only ***
> how
> >> come i cannot use the variable @.dbname in the second
> >> cursor without getting an error? Any workarround?
> >> Please help,
> >
> >Do the whole lot inside dynamic SQL:
> >
> >SET @.sql = 'DECLARE show_defrag cursor for SELECT "name"
> FROM ' + @.dbname +
> >'..sysobjects WHERE ...'
> >EXEC(@.sql)
> >
> >However, you don't have to loop inside the database for
> DBCC SHOWCONTIG.
> >Just use DBCC SHOWCONTIG at the database level using the
> WITH TABLERESULTS
> >option.
> >
> >
> >
> >--
> >Tibor Karaszi, SQL Server MVP
> >Archive at:
> >http://groups.google.com/groups?
> oi=djq&as_ugroup=microsoft.public.sqlserver
> >
> >
> >":)" <anonymous@.discussions.microsoft.com> wrote in
> message
> >news:5b3a01c3ad27$de17fe30$a601280a@.phx.gbl...
> >> Hey all,
> >>
> >> Can anyone explain me why this doesnt work:
> >>
> >> declare db_defrag cursor for
> >> select [name] from master..sysdatabases where dbid
> >> NOT IN (1,2,3,4,5,6) for read only
> >>
> >> declare @.dbname varchar(50)
> >>
> >> open db_defrag
> >> fetch next from db_defrag into @.dbname
> >>
> >> while @.@.fetch_status = 0
> >>
> >> *****declare show_defrag cursor for
> >> exec ('select [name] from ' + @.dbname
> >> + '..sysobjects where type =''U''') for read only ***
> how
> >> come i cannot use the variable @.dbname in the second
> >> cursor without getting an error? Any workarround?
> >> Please help,
> >>
> >> Thanxs
> >
> >
> >.
> >

Problem with remote replication

I have a number of dialup users who are trying to replicate against a master database.The first few times worked fine.but now each user is getting the following message

"The process could not change generation history at the publisher"

Any help or pointers gratefully received

many thanks

David J.

1) How many days has it run smoothly and end up with that error?

2) What is the number of transaction run per day?

3) Is this transactional replication?

|||

The first replication was done over the wirless network, after that the replication was done via a dialup connection over the Internet.Most users got 2/3 replications befor encountering the error message

"The process could not change generation history as the Publisher"

Not sure what you mean - Each user might add 400/500 new transactions each day

We are using Merge Replication

|||

It could be a timeout issue or a network related issue (due to flakiness)

Have you encountered the problem repeatedly now?

|||What will be the solution for timeout or network issues?|||

If it is a Timeout issue, it can be dealt with increasing the timeout value.

If it is a network issue, you will have to ensure that your network is connectable and the servers can talk to each other.

You should monitor your servers and see when you start encountering these problems. Analyze if there are any other external factors that influence it and then take some actions based on that fact.

|||Thanks, do you mean increasing timeout in SQL Enterprise Managers properties?|||Kind of. You would increase the timeout values (QueryTimeout/LoginTimeout) values for the agent jobs. But again, this suggestion holds if it is a timeout related problem.