Nested Queries, Stored Procedures, Temporary Table
Jul 23, 2005
Hi,
I'm adapting access queries to sql server and I have difficulties with
the following pattern :
query1 : SELECT * FROM Query2 WHERE A=@param1
query 2: SELECT * FROM Table2 WHERE B=@param2
The queries are nested, and they both use parameters.
In MS Acccess the management of nested queries with parameters is so
easy (implicit declaration of parameters, transmission of parameters
from main query to nested query)
that I don't know what the syntax should be for stored procedures.
The corresponding stored procedure would be something like
CREATE TABLE #TempTable (...table definition...)
INSERT INTO #TempTable ExecProc spQuery2 @Param2
SELECT * FROM #TempTable WHERE A=@Param1
And spQuery2 would be : SELECT * FROM Table2 WHERE B=@Param
I was wondering if this syntax would work and if I can skip the
explicit declaration of #TempTable definition.
Thanks for your suggestions.
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Apr 10, 2008
How do I use table names stored in variables in stored procedures?
Code Snippetif (select count(*) from @tablename) = 0 or (select count(*) from @tablename) = 1000000
I receive the error 'must declare table variable '@tablename''
I've looked into table variables and they are not what I would require to accomplish what is needed.
After browsing through the forums I believe I need to use dynamic sql particuarly involving sp_executesql. However, I am pretty new at sql and do not really understand how to use this and receive an output parameter from it(msdn kind of confuses me too). I am tryin got receive an integer count of the records from a certain table which can change to anything depending on what the user requires.
Code Snippet
if exists(Select * from sysobjects where name = @temptablename)
drop table @temptablename
It does not like the 'drop table @temptablename' part here. This probably wouldn't be an issue if I could get temporary tables to work, however when I use temporary tables i get invalid object '#temptable'.
Heres what the stored procedure does.
I duplicate a table that is going to be modified by using 'select into temptable'
I add the records required using 'Insert into temptable(Columns) Select(Columns)f rom TableA'
then I truncate the original table that is being modified and insert the temporary table into the original.
Heres the actual SQL query that produces the temporary table error.
Code Snippet
Select * into #temptableabcd from TableA
Insert into #temptableabcd(ColumnA, ColumnB,Field_01, Field_02)
SELECT ColumnA, ColumnB, Sum(ABC_01) as 'Field_01', Sum(ABC_02) as 'Field_02',
FROM TableB
where ColumnB = 003860
Group By ColumnA, ColumnB
TRUNCATE TABLE TableA
Insert into TableA(ColumnA, ColumnB,Field_01, Field_02)
Select ColumnA, ColumnB, Sum(Field_01) as 'Field_01', Sum('Field_02) as 'Field_02',
From #temptableabcd
Group by ColumnA, ColumnB
The above coding produces
Msg 208, Level 16, State 0, Line 1
Invalid object name '#temptableabcd'.
Why does this seem to work when I use an actual table? With an actual table the SQL runs smoothly, however that creates the table names as a variable problem from above. Is there certain limitation with temporary tables in stored procedures? How would I get the temporary table to work in this case if possible?
Thanks for the help.
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Jun 8, 2001
We are migrating a SQL 6.5 application with 1900 stored procedures that use 100's of temp tables to SQL 2000.
A problem we have encountered was that we started out getting an "invalid column" errors on certain procedures. Investigation determined that the error was being generated in a nested procedure. The table that caused the error ended up being a temp table that was created using "select into". The following select statement from that temp table gave the invalid column error.
First thinking it was the "Select Into" we then discovered that the outer most procedure had created a temp table of the same name prior to executing the lower level procedure. After the select into, the next statement was a SELECT that went against what it thought was the inner temp table. However, it grabbed the outermost temp table and then couldn't find the appropriate columns and generated the error.
The solution, of course, was to rename the inner most temp table. We also remove the "select into" in the procedure by explicitly creating the temp table.
We tried creating some test procedures to attempt to reproduce this scenario without complete success.
Our test created 3 procedures (sp1 calling sp2 calling sp3) to mimic the current scenario. Sp1 created a temp table and executed sp2, which executed sp3. Sp3 created another temp table using the same name as the one created in sp1.
If we create all three procedures at the same time, it doesn't matter if we change the order in which they are created or whether we create the inner temp table explicitly or with a "select into", SQL Query Analyzer won't let us create the procedure because it finds that the temp table has been declared twice. If we create the procedures separately however, they compile and allow sp3 to create a temp table by the same name as sp1. After creating the procedures independently, they runs properly in all cases with everything in proper scope and no problems.
Admittedly, this is bad coding to start with, but what is happening with the scope of the temp tables within the stored procedures?
Thanks,
Glen Smith
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Dec 20, 2007
Can a SqlDataSource or a TableAdapter be attached to a stored procedure that returns a temporary table? I am using Sql Server 2000.
The SqlDataSource is created with the wizard and tests okay but 2.0 controls will not bind to it.
The TableAdapter wizard says 'Invalid object name' and displayes the name of the temporary table.ALTER PROCEDURE dbo.QualityControl_Audit_Item_InfractionPercentageReport
@AuditTypeName varchar(50), @PlantId int = NULL,
@BuildingId int = NULL, @AreaId int = NULL,
@WorkCellId int = NULL, @WorkShift int = NULL,
@StartDate datetime = NULL, @EndDate datetime = NULL,
@debug bit = 0 AS
CREATE TABLE #QualityControl_Audit_Item_SelectDistinctByFilters_TempTable (ItemHeader varchar(100), Item varchar(250), HeaderSequence int, ItemSequence int, MajorInfractionPercent money, MinorInfractionPercent money)
DECLARE @sql nvarchar(4000), @paramlist nvarchar(4000)
SELECT @sql = '
INSERT INTO #QualityControl_Audit_Item_SelectDistinctByFilters_TempTable
(ItemHeader, Item, HeaderSequence, ItemSequence, MajorInfractionPercent, MinorInfractionPercent)
SELECT DISTINCT QualityControl_Audit_Item.Header,
QualityControl_Audit_Item.AuditItem,
QualityControl_Audit_Item.HeaderSequence,
QualityControl_Audit_Item.AuditItemSequence,
NULL, NULL
FROM QualityControl_Audit INNER JOIN
QualityControl_Audit_Item ON QualityControl_Audit.QualityControl_Audit_Id = QualityControl_Audit_Item.QualityControl_Audit_Id
WHERE (QualityControl_Audit.AuditType = @xAuditTypeName)'
IF @PlantId IS NOT NULL SELECT @sql = @sql + ' AND QualityControl_Audit.PlantId = @xPlantId'
IF @BuildingId IS NOT NULL SELECT @sql = @sql + ' AND QualityControl_Audit.BuildingId = @xBuildingId'
IF @AreaId IS NOT NULL SELECT @sql = @sql + ' AND QualityControl_Audit.AreaId = @xAreaId'
IF @WorkCellId IS NOT NULL SELECT @sql = @sql + ' AND QualityControl_Audit.WorkCellId = @xWorkCellId'
IF @WorkShift IS NOT NULL SELECT @sql = @sql + ' AND QualityControl_Audit.WorkShift = @xWorkShift'
IF @StartDate IS NOT NULL SELECT @sql = @sql + ' AND QualityControl_Audit.DateAuditPerformed >= @xStartDate'
IF @EndDate IS NOT NULL SELECT @sql = @sql + ' AND QualityControl_Audit.DateAuditPerformed <= @xEndDate'SELECT @sql = @sql + '
ORDER BY QualityControl_Audit_Item.HeaderSequence, QualityControl_Audit_Item.AuditItemSequence'
IF @debug = 1 PRINT @sqlSELECT @paramlist = '@xAuditTypeName varchar(50), @xPlantId int, @xBuildingId int, @xAreaId int, @xWorkCellId int,
@xWorkShift int, @xStartDate datetime, @xEndDate datetime'
EXEC sp_executesql @sql, @paramlist, @AuditTypeName, @PlantId, @BuildingId, @AreaId, @WorkCellId, @WorkShift, @StartDate, @EndDateDECLARE my_cursor CURSOR FOR
SELECT ItemHeader, Item, MajorInfractionPercent, MinorInfractionPercent FROM #QualityControl_Audit_Item_SelectDistinctByFilters_TempTable
OPEN my_cursor
--Perform the first fetchDECLARE @ItemHeader varchar(100), @Item varchar(250), @MajorInfractionPercent money, @MinorInfractionPercent money
FETCH NEXT FROM my_cursor INTO @ItemHeader, @Item, @MajorInfractionPercent, @MinorInfractionPercent
--Check @@FETCH_STATUS to see if there are any more rows to fetch.
WHILE @@FETCH_STATUS = 0
BEGIN
--Major
EXEC dbo.QualityControl_Audit_Item_InfractionPercentageReport_CalculateForMajorOrMinor @AuditTypeName, @PlantId, @BuildingId, @AreaId, @WorkCellId, @WorkShift, @StartDate, @EndDate, @ItemHeader, @Item, 'Major', @debug, @InfractionPercent = @MajorInfractionPercent OUTPUTUPDATE #QualityControl_Audit_Item_SelectDistinctByFilters_TempTable
SET MajorInfractionPercent = @MajorInfractionPercentWHERE (((ItemHeader IS NULL) AND (@ItemHeader IS NULL) OR (ItemHeader = @ItemHeader)) AND (Item = @Item))
--Minor
EXEC dbo.QualityControl_Audit_Item_InfractionPercentageReport_CalculateForMajorOrMinor @AuditTypeName, @PlantId, @BuildingId, @AreaId, @WorkCellId, @WorkShift, @StartDate, @EndDate, @ItemHeader, @Item, 'Minor', @debug, @InfractionPercent = @MinorInfractionPercent OUTPUTUPDATE #QualityControl_Audit_Item_SelectDistinctByFilters_TempTable
SET MinorInfractionPercent = @MinorInfractionPercentWHERE (((ItemHeader IS NULL) AND (@ItemHeader IS NULL) OR (ItemHeader = @ItemHeader)) AND (Item = @Item))
FETCH NEXT FROM my_cursor INTO @ItemHeader, @Item, @MajorInfractionPercent, @MinorInfractionPercent
END
CLOSE my_cursor
DEALLOCATE my_cursor
SELECT * FROM #QualityControl_Audit_Item_SelectDistinctByFilters_TempTable
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Jun 3, 2006
There are two ways to create a temporary tables in stored procedures
1: Using Create Table <Table Name> & then Drop table
ex. Create Table emp (empno int, empname varchar(20))
at last : drop table emp
2. Using Create table #tempemp
( empno int, empname varchar(20))
at last : delete #tempemp
---which one is preferrable & why.
what are the advantages & disadvantages of the above two types.
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Nov 25, 2001
I cannot seem to get nesting of stored procedures to work. I must have the syntax wrong. Should the following work:
SELECT *
FROM spWod_rptWoStatusSummary
Where spWod_rptWoStatusSummary is a Stored Procedure.
The above does not work. I get an error telling me that spWod_rptWoStatusSummary is an object that does not exit.
Does anyone know what the correct syntax is?
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Nov 25, 2001
I cannot seem to get nesting of stored procedures to work. I must have the syntax wrong. Should the following work:
SELECT *
FROM spWod_rptWoStatusSummary
(Where spWod_rptWoStatusSummary is a Stored Procedure).
The above does not work. I get an error telling me that spWod_rptWoStatusSummary is an object that does not exit.
Does anyone know what the correct syntax is?
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Dec 5, 2005
Hi Out There
The attempt to create the following stored procedure, which is supposed to call the previously created stored procedures inside it,
causes the following errors.
Server: Msg 137, Level 15, State 2, Line 1
Must declare the variable '@OfferIDTwo'.
Server: Msg 137, Level 15, State 2, Line 1
Must declare the variable '@OfferIDThree'.
Server: Msg 137, Level 15, State 2, Line 1
Must declare the variable '@OfferID'.
Server: Msg 137, Level 15, State 2, Line 1
Must declare the variable '@OfferID'.
Server: Msg 137, Level 15, State 2, Line 1
Must declare the variable '@OfferID'.
Server: Msg 137, Level 15, State 2, Line 1
Must declare the variable '@OfferID'.
Create Procedure spPrepareOfferSimulation
@OfferIDOne int
As
exec spPopulateOfferTables @OfferID
go
exec spPopulateOfferProduct @OfferID
go
exec spPopulateOfferDictionary @OfferID
go
exec spPopulateOfferCondition @OfferID
go
exec spPopulateOfferError @OfferID
go
exec spPopulateOfferLimit @OfferID
go
exec spPopulateOfferQA @OfferID
go
Can someone provide me with some productive input to fix this mess?
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Apr 14, 2008
I have a caller stored procedure (sp_A) which calls several stored procedures (sp_1,sp_2,sp_3,sp_4, sp_5)
The statements in the called stored procedures sp_1 to sp_5 are all contained within BEGIN TRY -- BEGIN TRAN and BEGIN CATCH blocks which ensure that any errors in the SQL statements are rolled back when an error occurs.
However, I have noticed that when the called stored procedure fails, the caller procedure does not fail Rather it continues processing the remaining sps. I want to add code in my calling sp to stop this fom happening. Any ideas?
I have used this statement within my calling sp but no joy yet.
set @ErrCode = 0
exec @ErrCode = sp_executesql @Sql
if @ErrCode <> 0
begin
return 1
end
Any one with ideas? Thanks
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Sep 28, 2007
I need the output of a stored procedure in another SP. That's simple (using a temporary table). But there's a small (big error ) problem.
Since I have to manually define the temporary table with it's fields and datatype to recieve the output from the nested SP , this approach would fail if, in the future more parameters are required to be returned . Is it possible to immunise my SP to such a consequence at creation time, rather them having to amend the temporary table later ?
Any idea how to overcome the above problem ? Is there a way that the temporary table can be automatically created like we have in a SQL statement with the INTO keyword. Any ideas ?
Thanks,
Alec
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Apr 30, 2008
I have a stored procedure that returns a scalar value and I want to use that value (among other places) within another stored procedure.
-- The general purpose stored procedure is far too long to include here but I've included the last several lines of code at the bottom to show general gist of it and how it exits.--
The only way I can find to use that returned value "criteria" in a stored procedure is to define a temporary table, INSERT it into the table and then extract it from the temprary table into the variable where I actually wanted it.... i.e.
DECLARE @CriteriaTable TABLE ( Criteria VARCHAR(8000) )INSERT INTO @CriteriaTable (Criteria) EXEC psp_WRP_DisplayCriteria @UserID, 'Dealers, Prefix, Serial Range, Models, Makes, Sold Date', @UserGroup SELECT @Criteria=Criteria FROM @CriteriaTable
This seems like a ridiculously long winded and confusing way of doing things, especially since Im doing it in a dozen different procedures, half a dozen reports and 1 (so fasr) asp.net/VB web site - and I can't help thinking there must be a better way using just one or even zero extra lines of code to do this.
e.g. SELECT@Criteria = (EXEC dbo.psp etc...)
... or some variation thereof with the correct syntax.
or even better going to where that variable is used and changing ...
EXEC dbo.[psp_InsertWarrantyReportTracking]
@UserID = @UserID ,
@ReportName = 'rptChassisTrackExtdWarranty', -- <------
@ReportCriteria = @Criteria
to ...
EXEC dbo.[psp_InsertWarrantyReportTracking] @UserID = @UserID , @ReportName = 'rptChassisTrackExtdWarranty', -- <------ @ReportCriteria = (EXEC dbo.psp_ etc...)... or some variation thereof with the correct syntax.
But no matter how I try and how I search I can't find any way other than in what is otherwise a completely supefluous temporary table.
Am I missing something or is that REALLY the only way to get a hold of that returned value?
------ Last portion of the general purpose routine I'm trying to call ---------------------If Patindex('%RO Audit%',@Parmlist) > 0
Begin
set @Criteria = @Criteria + '- RO Audit date'
select @All=ROAuditAll, @From = ROAuditFrom, @To = ROAuditTo
from dbo.tblWRParameters where @UserID = UserName
If @All = 1
set @Criteria = @Criteria + '- ALL' + @NL
else
set @Criteria = @Criteria + 'is between ' + rtrim(@From) + ' and ' + rtrim(@to) + @NL
END
--Return the combined parameter field
select @Criteria as Criteria
END
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Mar 22, 2001
Has anyone faced problems in calling one stored procedure from within another stored procedure ? I am considering using nested SPs, and would appreciate any inputs on it.
Thks,
SC
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Mar 21, 2008
I have nested a Stored Procedure within a stored procedure. The nested stored procedure ends in a select statement. What I'd like to do is either capture the results of the select statement (it will be 1 row with 3 columns, I only need the contents of first column), or suppress the select statement from displaying in the final results of the Stored Procedure it is nested in.
Is there any way to do either of those?
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Jan 7, 2008
For every trigger and stored procedure I have a try-catch that writes to an error_log table.
The problem is the inner error is not preserved, always get:
The current transaction cannot be committed and cannot support operations that write to the log file. Roll back the transaction.
As seen below - though commented out:
I tried commiting any transactions - though I didn't create one.
I played with the
XACT_STATE though that was 0
My test case was last procedure has 1/0
Thanks,
Russ
-----------------------------------------------------------
Below is what I have
Step 1)
ALTER Trigger [trg_ActivityLogEntryReportsError] ON [dbo].[ActivityLog]
FOR INSERT AS
DECLARE @ActivityLogID int
,@AlertMessageTypeID int
,@comment nvarchar(max)
,@Error_Source nvarchar(max)
--- etc.
SELECT
@ActivityLogID = ActivityLogID
,@AlertMessageTypeID = AlertMessageTypeID
,@Comment = Comment
FROM INSERTED
BEGIN TRY
if @AlertMessageTypeID = 2 -- activity reported an error
begin
exec proc_CreateAlertLogEntry_forError
@ActivityLogID
,@Comment
update ActivityLog
set flgActivityChecked = 1
where @activityLogId = activityLogID
end
END TRY
BEGIN CATCH
select
@Error_Source = 'trg_ActivityLogEntryReportsError '
,@Error_Procedure = ERROR_Procedure()
--- etc.
INSERT INTO ERROR_LOG
( Error_Source
,Error_Procedure
,Error_Message
--- etc.
)
VALUES
(
@Error_Source
,@Error_Procedure
,@Error_Message
---etc.
,@Error_Comment )
-- if @@TRANCOUNT > 0
--begin
--commit
--end
END CATCH
Step 2)
/*
This will be called by a Trigger
*/
ALTER Procedure [dbo].[proc_CreateAlertLogEntry_forError]
(@ActivityLogID int
,@Comment nvarchar(max))
AS
Declare
@ProcessScheduleID int
,@ProcessID int
--,@comment nvarchar(max)
,@Error_Source nvarchar(max)
---etc
BEGIN TRY
insert into AlertLog
(
AlertMessageTypeID
,comment
,ActivityLogID
)
values
(
2 -- error
,@comment
,@ActivityLogID
)
end
END TRY
BEGIN CATCH
PRINT 'ERROR OCCURED'
PRINT ERROR_Procedure() + ' ' + ERROR_MESSAGE()
select
@Error_Source = 'proc_CreateAlertLogEntry_forError '
---etc.
INSERT INTO ERROR_LOG
( Error_Source
,Error_Procedure
,Error_Message
---etc.
)
VALUES
(
@Error_Source
,@Error_Procedure
,@Error_Message
--- etc.)
-- if @@TRANCOUNT > 0
--begin
--commit
--end
END CATCH
update ActivityLog
set
flgActivityChecked = 1
,UpdatedDate = getdate()
,UpdatedBy = suser_sname()
where
ActivityLogID = @ActivityLogID
STEP 3
ALTER Trigger [trg_AlertLogEntry_SendsOnInsert] ON [dbo].[AlertLog]
FOR INSERT AS
declare
@AlertLogID Int
,@AlertMessageTypeID int
,@Comment nvarchar(max)
,@Error_Source nvarchar(max)
,@Error_Procedure nvarchar(max)
,@Error_Message nvarchar(max)
--- etc.
SELECT
@AlertLogID = AlertLogID
,@AlertMessageTypeID = AlertMessageTypeID
,@Comment = isnull(Comment,'')
,@ActivityLogID = isnull(ActivityLogID,-1)
FROM INSERTED
BEGIN TRY
PRINT 'trg_AlertLogEntry_SendsOnInsert'
PRINT @COMMENT
exec proc_SendEmail
@AlertLogID
,@AlertMessageTypeID
,@comment
,@ActivityLogID
END TRY
BEGIN CATCH
select
@Error_Source = 'trg_AlertLogEntry_SendsOnInsert '
,@Error_Procedure = ERROR_Procedure()
,@Error_Message = ERROR_MESSAGE()
--- etc.
INSERT INTO ERROR_LOG
( Error_Source
,Error_Procedure
-- etc.)
VALUES
(
@Error_Source
,@Error_Procedure
,@Error_Message
---etc.)
-- if @@TRANCOUNT > 0
--begin
--commit
--end
END CATCH
STEP 4
ALTER Procedure [dbo].[proc_SendEmail]
(
@AlertLogID Int
,@AlertMessageTypeID int
,@Comment nvarchar(max) = ''
,@ActivityLogID int = -1
)
AS
declare @AlertSubject nvarchar(512)
,@AlertBody nvarchar(max)
,@myQuery nvarchar(512)
,@profile_name1 nvarchar(128)
,@return_value int
,@mymailitem int
,@Error_Source nvarchar(max)
---etc.
,@Error_Comment nvarchar(max)
,@Test int
/*
@return_value int -- not using at this point but 0 is OK 1 is failure
@mymailitem int -- not using now could store mailitem_id which is on msdb.dbo.sysmail_mailitems
sysmail_mailitems.sent_status could be either 0 new, not sent, 1 sent, 2 failure or 3 retry.
*/
select top 1 @profile_name1 = [name] from msdb.dbo.sysmail_profile
order by profile_id
set @profile_name1 = rtrim(ltrim(@profile_name1))
print '@profile_name1: ' + @profile_name1
print '@comment: ' + @comment
Declare @CrsrRecipient Cursor
BEGIN TRY
PRINT 'proc_SendEmail'
--set @test = 1/0 'test crashing
select
@AlertSubject = 'AlertSubject'
,@AlertBody = 'AlertBody'
,@recipients = 'russ@test.com'
print 'sending email ' + CAST(getdate() as nvarchar(100))
EXEC @return_value = msdb.dbo.sp_send_dbmail
@profile_name = @profile_name1
,@recipients = @EMAILID
,@body = @AlertBody
,@subject = @AlertSubject
,@mailitem_id = @mymailitem OUTPUT
print 'Done ' + CAST(getdate() as nvarchar(100))
print cast(@return_value as nvarchar(100))
update alertlog
set AlertSendStatusID = 1 --sent
where
@AlertLogID = AlertLogID
END TRY
BEGIN CATCH
PRINT 'ERROR OCCURED'
PRINT ERROR_Procedure() + ' ' + ERROR_MESSAGE()
select
@Error_Source = ' proc_SendEmail '
,@Error_Procedure = ERROR_Procedure()
--- etc.
INSERT INTO ERROR_LOG
( Error_Source
,Error_Procedure
---etc.)
VALUES
(
@Error_Source
,@Error_Procedure
,@Error_Message
--- etc.)
update alertlog
set AlertSendStatusID = 2 --error
where
@AlertLogID = AlertLogID
--if @@TRANCOUNT > 0
--begin
--commit
--end
END CATCH
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Feb 11, 2006
Hi there,I have a data manipulation process written in a Nested Stored procedurethat have four levels deeper. When I run these individual proceduresindividually they all seems to be fine. Where as when I run them alltogether as Nested proces (calling one in another as sub-procedures) Logfile is growing pretty bad like 25 to 30GB.. and finally getting kickedafter running disk space. This process is running around 3hrs on a SQLserever Standard Box having dual processer and 2gb ram.This procedures have bunch of bulk updates and at least one cursor ineacch procedure that gets looped through.I was wondering if anybody experienced this situation or have any clueas to why is this happening and how to resolve this?I am in a pretty bad shape to deliver this product and in need of urgenthelp.Any ideas would be greatly appreciated..Thanks in advance*** Sent via Developersdex http://www.developersdex.com ***
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Apr 16, 2007
Hi all,
I had developed all my reports using CRXI and stored procedures of MSSQL 2000. Now I am migrating from CRXI to SSRS. But i have a problem because of my report stored procedures. These stored procedures are complex and nested. When i try to use procedures in a report, it gives a error. When i comment out my EXEC line in my procedures, it goes OK.
Please help me to do this ?
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Sep 15, 2014
Consider a situation where a stored procedure taking a varbinary(max) (BLOB) input parameter then calls a nested stored procedure and passes along that varbinary(max) as an input parameter to the nested stored procedure.
Is a copy of the BLOB provided to the nested stored procedure (passed by value) OR is the BLOB passed by reference.
My interest is in understanding the potential memory hit when handling large BLOBs in this environment.
For example, if the BLOB is 200MB, will SQL server need to allocate memory for a new copy each time it's passed to another stored procedure?
Looks like table type parameters are passed by reference, but I haven't been able to find any info on BLOBS in this context.
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Jul 9, 2006
Hi,
I would like to use a stroed procedure within another stored procedure ( nested sp )
in a SQL project in VS.NET 2005. Since I have to use "context connection = true" as
connection string, I wont be able to use this connection for another sqlconnection
object. Because its already open. and If i try to use a regular connection string
("server=localhost;...") it will raise a security permission error. Having this
problem, Im not able to use nested stored procedures. Would anyone please give me a
hint how to resolve this issue?
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Sep 19, 2007
Hi,
I have a quick question about pushing things onto the database to do. It is supposed to be more efficient, and it is more secure. The downside as far as I can tell is that one can end up with incredibly expensive and complex database deployment using costly servers and software.
Is there an approach that minimizes database query time by moving much of the processing to the (less efficient) web server calling the database, and then only using simply queries. One would then process the data in code, stripping it down to exactly what is needed, rather than doing complex things on the db itself.
An example of this might be that you want to parse a field on a particular char. and return only the first part of the string, up until this char occurs. This can be done on the db server, but...
I understand that one might return extra information, but it seems there is a large potential payoff in less complexity and expense.
Anyway, if you know of such an approach and the name of it, I would appreciate hearing it,
Thanks
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Jun 12, 2006
Hello, I'm trying to create a Stored Procedure who receives the table name as a parameter, then uses a cursor to obtain every column name and then builds a string like SELECT col1, col2, ... from TABLE
In fact that would be the same as SELECT * FROM table; but I can't do this, because I'll be using this stored procedure to loop through many tables that has different quantity of columns with a DTS, and if a specify the *, then the DTS wouldn't let me do the select with tables with different quantity of fields.
Could you help me please, because my code isn't working:
CREATE PROCEDURE dbo.stp_Test
(
@tablename AS VARCHAR(50)
)
AS
DECLARE @columnname varchar(50)
DECLARE @strsql Nvarchar(500)
DECLARE @query varchar(4000)
SET NOCOUNT ON
DECLARE c1 CURSOR FOR
SELECT column_name FROM information_schema.columns
WHERE table_name = @tablename
OPEN c1
FETCH NEXT FROM c1 INTO @columnname
WHILE @@fetch_status = 0
BEGIN
IF (@strsql is null)
BEGIN
SET @strsql=@columnname
END
ELSE
BEGIN
SET @strsql = @strsql + ',' + @columnname
END
FETCH NEXT FROM c1 INTO @columnname
END
CLOSE c1
DEALLOCATE c1
SELECT @query = 'SELECT ' + @strsql + ' FROM ' + @tablename
EXEC @query
SET NOCOUNT OFF
GO
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Dec 17, 2007
Hi,
We have our DWH built in SQL Server 2005. We are doing reporting against the DWH and most of query logic is complex. For this purpose we have proposed to write SPs to encapsulate the logic and which in turn can be called from the Report Data Tab. But our IT Architect suggest us to have inline queries instead of SPs as that will reduce the overhead of going to the DBAs everytime the logic changes. As I am new to DWH+Reporting, I was really pondering over which way to go. Can anyone suggest a way out on this.
Thanks,
S Suresh
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Nov 1, 2007
Hi all - I'm trying to optimized my stored procedures to be a bit easier to maintain, and am sure this is possible, not am very unclear on the syntax to doing this correctly. For example, I have a simple stored procedure that takes a string as a parameter, and returns its resolved index that corresponds to a record in my database. ie
exec dbo.DeriveStatusID 'Created'
returns an int value as 1
(performed by "SELECT statusID FROM statusList WHERE statusName= 'Created')
but I also have a second stored procedure that needs to make reference to this procedure first, in order to resolve an id - ie:
exec dbo.AddProduct_Insert 'widget1'
which currently performs:SET @statusID = (SELECT statusID FROM statusList WHERE statusName='Created')INSERT INTO Products (productname, statusID) VALUES (''widget1', @statusID)
I want to simply the insert to perform (in one sproc):
SET @statusID = EXEC deriveStatusID ('Created')INSERT INTO Products (productname, statusID) VALUES (''widget1', @statusID)
This works fine if I call this stored procedure in code first, then pass it to the second stored procedure, but NOT if it is reference in the second stored procedure directly (I end up with an empty value for @statusID in this example).
My actual "Insert" stored procedures are far more complicated, but I am working towards lightening the business logic in my application ( it shouldn't have to pre-vet the data prior to executing a valid insert).
Hopefully this makes some sense - it doesn't seem right to me that this is impossible, and am fairly sure I'm just missing some simple syntax - can anyone assist?
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Dec 20, 1999
Help!
I have converted my Access Jet database to a SQL Server database. In Access, I had many functions that I created to use in my queries. SQL Server does not allow for functions to be created. So, I had to create procedures in SQL Server to perform what my functions did.
I am trying to use the procedures I created on calculated fields within my SQL statement in my view. It returns an error stating that the procedure is not recognized.
How can I create functions to be used in my query?
Thanks.
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Mar 15, 2007
I know its a weird request, but we have created an application with sql server but our client wants a version which can be put onto disk.
We decided to create the stored procedures into queries, would this be the best idea and if so does anyone know if there is a freeware software that can do this or will I have to painstakingly re-create the queries?
Any advice would be greatly appreciated.
Many thanks
Smilla
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Mar 12, 2008
Im reviewing my stored procedures for a new application and got to thinking about protecting against sql injection. I think im pretty safe since im using stored procedures and none of them use any 'exec' commands within them, but im not sure.
I was reading this article, and again all the examples that list a stored procedure, have an 'exec' command somewhere that is the culprit. So, in my case lets say I was doing something like this:
Im generally using regularexpression validation controls on the client side of the application and limiting the max length of the input there as well.
Am I safe, or do I need further input checking within the procedure ?
Code Snippet
CREATE PROCEDURE [dbo].[get_Uploads]
@app varchar(50)
--Init variables
SET @error_number = 0
BEGIN TRY
SELECT [Logid],[Filename],[Label],[UploadDate],[App]
FROM UploadLog au
WHERE [App]=@app
END TRY
BEGIN CATCH
SET @error_number = -2
END CATCH
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Jan 11, 2008
I'm using sql 2005. I tried using Profiler with a filter on TempDB but it doesn't seem to record the activity.
Thanks.
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Aug 29, 2007
which is more efficient...which takes less memory...how is the memory allocation done for both the types.
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Mar 7, 2007
Hello everyone,
I don't know what category would be appropriate for this question but security seems to be close enough.
I have this case scenario: I am running an automated application that extracts data from a web site and stores the data into a table on SQL server 2005. This information is not confidential in the extreme of social insurance #'s, bank account #s, but should not be seen by a typical employee (it has no use for them). After the data has been stored, it retrieves the data from the same table, processes it, and updates the same table. This application runs every hour infinitely.
Should all the insert, update, and select queries be stored under a stored procedure? I am not concern with performance. My concern would fall under design and security.
Is it worth to hide the details of inserting/updating/selecting behind a stored procedure? Or should I just allow the program to send select/update/insert SQL queries?
No employee (other then the developer and the DB admin) or customer ever access this table (They do not have permission from SQL). The username and passwords were created with security in mind.
Any thoughts or ideas?
Thanks for your time, Adrian
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Feb 15, 2005
Hi folks, I have a procedure that pefroms some action and creates the outputs to a temporary table #mytable. I want to call this procedure and take the results from #mytable within the procedure. Can i. If i call #mytable after executing the procedure; won't work. Means that the table gets dropped and doesn't prolong for the session?
Howdy!
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Mar 30, 2004
I know there maybe something similar of what im asking for but i just cant find it.
I have 3 Stored procedure.
SPA - create a temporary table "sp_getListOfChildren"
SPB - insert the data into the temp table "sp_InsertCategoriesFound"
SPC - display the list of categories i found "sp_ListingAvailableCategories"
process:
SPA call SPB and SPC call SPA
my problem is in the SPC. it seems that the table doesnt exist anymore when i do a select but in the message tab of my sql analyser i can see that the table have some data before executing that store proc..
Invalid object name '#TblTempCat'. for my SPC !! ??? why.. how do i detect a temp table in diffirent stored procedure per user and as to be temp table.. for multiple access.. "WEB"
============MY "SPC" CODE=============
alter PROCEDURE sp_ListingAvailableCategories @CurrentCategoryID AS uniqueidentifier
AS
exec sp_getListOfChildren @CurrentCategoryID
select * from #TblTempCat
select * from TblCategories where CatID not in (select CatID from #TblTempCat) and CatId <> @CurrentCategoryID
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Mar 21, 2006
I'm trying to insert the results of a stored procedure call into a temporary table, which is not working. It does work if I use a non-temporary table. Can anyone tell me if this is supported or what I am doing wrong.
Here is an example:
-- DROP PROCEDURE testProc
CREATE PROCEDURE testProc AS
BEGIN
SELECT '1111' as col1, '2222' as col2
END
-- this call will fail with message Invalid object name '#tmpTable'.
INSERT INTO #tmpTable EXEC testProc
--- DROP TABLE testTable
CREATE TABLE testTable (col1 varchar(5), col2 varchar(5))
-- this call will succeed
INSERT INTO testTable EXEC testProc
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Feb 20, 2008
I have a stored procedure with the following:
CREATE TABLE #t1 (... ...);
WITH temp AS (....)
INSERT INTO #t1
SELECT .... FROM temp LEFT OUTER JOIN anothertable ON ...
This stored procedure works fine in Management Studio.
I then use this stored procedure in an ASP.NET page via a SQLDataSource object. The ASP.NET code compiles without error, but the result returned is empty (my bounded GridView object has zero rows). From Web Developer, if I try to Refresh Schema on the SQLDATASource object, I get an error: "Invalid object name '#t1'. The error is at the red #1 as I tried putting something else at that location to confirm it.
What does the error message mean and what have I done wrong?
Thanks.
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Mar 15, 2005
I have this table record:
PHP Code:
ID | NUMBER | DSTART | DEND | ADDRESS |
----------------------------------------------------------------
1 | 9524123 | 12 Dec 95 | 24 Dec 95 | London |
2 | 9524123 | 06 Jan 96 | 15 Jan 96 | Paris |
3 | 084521 | 12 Mar 96 | 15 May 96 | New York |
4 | 084521 | 22 Aug 96 | 25 Aug 96 | Sidney |
---------------------------------------------------------------
Now, I need to build a query to show only the latest DTSTART date
for each NUMBER. The result would be something like this:
PHP Code:
ID | NUMBER | DSTART | DEND | ADDRESS |
----------------------------------------------------------------
2 | 9524123 | 06 Jan 96 | 15 Jan 96 | Paris |
4 | 084521 | 22 Aug 96 | 25 Aug 96 | Sidney |
---------------------------------------------------------------
Can you guys help me to build the queries? Thanks in advance.
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