Implicit Transaction Count
May 12, 2004Hello, everyone:
I need total transaction count. @@TRANCOUNT returens the number of explicit transaction. How about implicit transaction? Thanks a lot.
ZYT
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Transaction Count After EXECUTE Indicates That A COMMIT Or ROLLBACK TRANSACTION Statement Is Missing. Previous Count = 1, Current Count = 0.
Aug 6, 2006With the function below, I receive this error:Error:Transaction count after EXECUTE indicates that a COMMIT or ROLLBACK TRANSACTION statement is missing. Previous count = 1, current count = 0.Function:Public Shared Function DeleteMesssages(ByVal UserID As String, ByVal MessageIDs As List(Of String)) As Boolean Dim bSuccess As Boolean Dim MyConnection As SqlConnection = GetConnection() Dim cmd As New SqlCommand("", MyConnection) Dim i As Integer Dim fBeginTransCalled As Boolean = False
'messagetype 1 =internal messages Try ' ' Start transaction ' MyConnection.Open() cmd.CommandText = "BEGIN TRANSACTION" cmd.ExecuteNonQuery() fBeginTransCalled = True Dim obj As Object For i = 0 To MessageIDs.Count - 1 bSuccess = False 'delete userid-message reference cmd.CommandText = "DELETE FROM tblUsersAndMessages WHERE MessageID=@MessageID AND UserID=@UserID" cmd.Parameters.Add(New SqlParameter("@UserID", UserID)) cmd.Parameters.Add(New SqlParameter("@MessageID", MessageIDs(i).ToString)) cmd.ExecuteNonQuery() 'then delete the message itself if no other user has a reference cmd.CommandText = "SELECT COUNT(*) FROM tblUsersAndMessages WHERE MessageID=@MessageID1" cmd.Parameters.Add(New SqlParameter("@MessageID1", MessageIDs(i).ToString)) obj = cmd.ExecuteScalar If ((Not (obj) Is Nothing) _ AndAlso ((TypeOf (obj) Is Integer) _ AndAlso (CType(obj, Integer) > 0))) Then 'more references exist so do not delete message Else 'this is the only reference to the message so delete it permanently cmd.CommandText = "DELETE FROM tblMessages WHERE MessageID=@MessageID2" cmd.Parameters.Add(New SqlParameter("@MessageID2", MessageIDs(i).ToString)) cmd.ExecuteNonQuery() End If Next i
' ' End transaction ' cmd.CommandText = "COMMIT TRANSACTION" cmd.ExecuteNonQuery() bSuccess = True fBeginTransCalled = False Catch ex As Exception 'LOG ERROR GlobalFunctions.ReportError("MessageDAL:DeleteMessages", ex.Message) Finally If fBeginTransCalled Then Try cmd = New SqlCommand("ROLLBACK TRANSACTION", MyConnection) cmd.ExecuteNonQuery() Catch e As System.Exception End Try End If MyConnection.Close() End Try Return bSuccess End Function
Implicit Transaction For A Page Request?
Nov 19, 2003If I execute multiple SqlCommands in a single .aspx, using a single SqlConnection, are all the commands part of the same transaction?
That is, if I say:
cmd1.CommandText = "UPDATE foo SET myVal = myVal - 1"
cmd2.CommandText = "SELECT myVal FROM foo"
cmd1.Connection = myConn
cmd2.Connection = myConn
myConn.Open()
cmd1.ExecuteNonQuery() ' decrement myVal
intResult = CInt(cmd2.ExecuteScalar()) ' select value of myVal
myConn.Close()
Do the UPDATE and the SELECT happen in the same transaction, or is it possible that someone else would have changed the value of myVal between these two calls?
Implicit Transaction Mode In SQL Server 2000
May 17, 2007Hi all:
I know i can use the sentence SET IMPLICIT_TRANSACTIONS ON in a Stored Procedure to force SQL Server to set the connection into implicit transaction mode.
Have i a sentence or configuration to force all SQL Server connections to implicit transaction mode?
Thanks in advance.
SQL Server 2014 :: Transaction Isolation Level And Implicit Transactions
Oct 23, 2015I'm investigating a poorly performing procedure that I have never seen before. The procedure sets the transaction isolation level, and I suspect it might be doing so incorrectly, but I can't be sure. I'm pasting a bastardized version of the proc below, with all the names changed and the SQL mucked up enough to get through the corporate web filters.
The transaction isolation level is set, but there is no explicit transaction. Am I right that there are two implicit transactions in this procedure and each of them uses snapshot isolation?
SET NOCOUNT ON;
SET TRANSACTION ISOLATION LEVEL SNAPSHOT;
DECLARE @l_some_type varchar(20),
@some_type_code varchar(3),
@error int,
@error_msg varchar(50);
[Code] .....
Transaction Count/day
Dec 15, 2000Is anyone currently totalling their transaction count per day? I'm wondering how to do this.
I figure I can stick perfmon tran/sec in a table and total it that way, just wondering about other ways. Thanks.
Pete Karhatsu
Transaction Count
Mar 20, 2008How do you find out how many transactions sql server is processing? I want to be able to monitor peak and average transaction processing counts over time.
View 2 Replies View RelatedTransaction Count --help Very Urgent!!
Jul 24, 2001Hi,
I would like to capture number of the total transactions made on the server during a day. ie begin tran - commit tran
How can I collect this information?
Is it possible?
Please help.
SQL Server 7.0 Transaction Log Count
Jun 13, 2000Hello,
We just migrated one of our databases from SQL Server 6.5 to 7.0. One of our applications (2-tier) used to run this query against the database: "Select rows from sysindexes where name = 'syslogs'" to check the number of rows.
There is no table 'syslogs' in the master anymore. There is no name "syslogs" in the sysindexes. Do you know why don't we have this table and how can I get the number of rows?
Thank you,
Anastasia.
Count Of Transaction Per Hour For A Day
Sep 7, 2015I am new in SQL Server and creating some SQL script that should give total transaction count per hour for a day. I need simply hour and count result. My table contains DateCreated column and unique ID column.
View 5 Replies View RelatedUsage Of Count() Function Inside Sql Transaction
May 9, 2007Please find my second post in this thread.
Can anyone help me in sorting out the problem and let me know what might be the reason.
Thanks & Regards
Pradeep M V
Error 209 Ambiguous Column ..Transaction Count After EXECUTE Indicates .....
Aug 28, 2006i'm getting following exception when i try to execute stored procedure.
{"Ambiguous column name 'MemberID'.
Transaction count after EXECUTE indicates that a COMMIT or ROLLBACK TRANSACTION statement is missing. Previous count = 0, current count = 1." }
I know why i'm getting "Ambiguous column name 'MemberID'" exception but i dont know why i'm getting
"Transaction count after EXECUTE indicates that......"
In my stored proc i'm checking if error occured goto :Error_handler where i do ROLLBACK TRAN
/* Its failing at MemberID = tTempResult.MemberID bcoz of Ambiguous column name. I know i have to use RebateInstanceItem.MemberID=tTempResult.MemberID */
here is my stored proc
CREATE PROCEDURE dbo.ExportFile
@intMonth INT,
@intYear INT,
@dtFirstDayOfMonth DATETIME
AS
BEGIN
BEGIN TRANSACTION
/*
I have some logic here that will select rows into temporary table
#TEMPRESULT
*/
UPDATE
dbo.RebateInstanceItem
SET
ResubmitCreated = @dtmNewCreated
FROM #TEMPRESULT tTempResult
WHERE
MemberID = tTempResult.MemberID
AND RebateInstanceItem.IsResubmit = 'Y'
AND (RebateInstanceItem.ResubmitCreated = @dtmLastCreated
OR RebateInstanceItem.ResubmitCreated IS NULL)
IF @@ERROR<>0
GOTO ERR_HANDLER // when error it will goto error_handler that will rollback
DROP TABLE #TEMPRESULT
IF @@ERROR<>0
GOTO ERR_HANDLER
COMMIT TRANSACTION
RETURN 0
END
ERR_HANDLER:
ROLLBACK TRANSACTION
RETURN 1
GO
Error 209 Ambiguous Column Name ...Transaction Count After EXECUTE Indicates That A COMMIT Or ROLLBACK ....
Aug 28, 2006i'm getting following exception when i try to execute stored procedure.{"Ambiguous column name 'MemberID'.
Transaction count after EXECUTE indicates that a COMMIT or ROLLBACK TRANSACTION statement is missing. Previous count = 0, current count = 1." }I know why i'm getting "Ambiguous column name 'MemberID'" exception but i dont know why i'm getting"Transaction count after EXECUTE indicates that......" In my stored proc i'm checking if error occured goto :Error_handler where i do ROLLBACK TRAN/* Its failing at MemberID = tTempResult.MemberID bcoz of Ambiguous column name. I know i have to use RebateInstanceItem.MemberID=tTempResult.MemberID */ here is my stored procCREATE PROCEDURE dbo.ExportFile @intMonth INT, @intYear INT, @dtFirstDayOfMonth DATETIMEAS BEGINBEGIN TRANSACTION /* I have some logic here that will select rows into temporary table #TEMPRESULT */ UPDATE dbo.RebateInstanceItem SET ResubmitCreated = @dtmNewCreated FROM #TEMPRESULT tTempResult WHERE MemberID = tTempResult.MemberID AND RebateInstanceItem.IsResubmit = 'Y' AND (RebateInstanceItem.ResubmitCreated = @dtmLastCreated OR RebateInstanceItem.ResubmitCreated IS NULL) IF @@ERROR<>0 GOTO ERR_HANDLER // when error it will goto error_handler that will rollback DROP TABLE #TEMPRESULT IF @@ERROR<>0 GOTO ERR_HANDLERCOMMIT TRANSACTIONRETURN 0ENDERR_HANDLER: ROLLBACK TRANSACTION RETURN 1GO
Transact SQL :: Transaction Count After EXECUTE Indicates Mismatching Number Of BEGIN And COMMIT Statements
Aug 19, 2015I am getting an exception. And i don't know whether this exception is from the C# coding or SQL SERVER."Cannot roll back InsertRxs. No transaction or savepoint of that name was found.Transaction count after EXECUTE indicates a mismatching number of BEGIN and COMMIT statements. Previous count = 0, current count = 1.A transaction that was started in a MARS batch is still active at the end of the batch. The transaction is rolled back."
View 2 Replies View RelatedSQL Server 2012 :: Transaction Count After EXECUTE Indicates Mismatching Number Of BEGIN And COMMIT Statements
Oct 23, 2015I'm all of a sudden getting this error on a Stored Procedure that has not been touched since it was created.
Msg 266, Level 16, State 2, Procedure usp_ArchivexactControlPoint, Line 0
Transaction count after EXECUTE indicates a mismatching number of BEGIN and COMMIT statements. Previous count = 0, current count = 1.
CREATE PROCEDURE [dbo].[usp_ArchivexactControlPoint]
AS
DECLARE @TableName VARCHAR (50)
[Code] ...
Implicit Keep Together For Export?
Jul 20, 2005I have a report that has 3 nested lists. The report looks fine when I view it in the browser but when I print it or export it to another format it appears that keep together is on for each list because some pages are only partially filled. I do not have keep together turned on for any report control, and I don't have page break turned on for anything. This problem results in the report being many more pages than it needs to be. Can anyone help?
View 4 Replies View RelatedImplicit Cast Is Forbidden
Apr 24, 2006Hi,
I have noticed that implicit casts are allowed according to the actual data in a column.
Here is an example:
SELECT * FROM MyTable WHERE MyColumn = 3897
MyColumn is defined as nvarchar(15) not null in the database schema.
This query will work only if there are no record in MyTable for which MyColumn has an alphanumerical value. Otherwise it will raise an error:
Serveur : Msg 245, Niveau 16, État 1, Ligne 1
Syntax error converting the nvarchar value 'C061' to a column of data type int.
Of course, the following query is always successful:
SELECT * FROM MyTable WHERE MyColumn = '3897'
Am I correct?
Thanks a lot.
Implicit Vs Explicit Joins
May 20, 2008performance wise what is the difference between following queries
Select * from A, B Where A.ID = B.ID
Select * from A INNER JOIN B ON A.ID = B.ID
(ID is the primary key)
Implicit Cashing In SSRS
Jan 23, 2008Hi Everyone-
i have a report that include parameters that the user set and press the button ViewReport for rendering the report
until that everything ok,.. .......but assume that there is an updating occurred on data after the user make the first press on the button ViewReport.
The problem is if the user press the button ViewReport again for the second time without changing the parameter value the report result will be the same even though it is the old data that appear in the 1st press button.
can anyone tell me how to handle this problem to make it refresh when the ViewReport button is pressed
or if there is no solution can anyone provide me with a link that talks about that problem for more details
thanx
Maylo
Disable Implicit Casting
Oct 10, 2006Is there a way do disable/disallow implicit casting in Sql Server 2000?
Say for example:
if ' ' = 0 select getdate()
This wil print out the current date and time.
But ' ' (a string, varchar, whatever) is not the same type as 0 (say, int). Implicit casting is nice, but is there also an off switch?
Implicit Casting And UNPIVOT
Jun 29, 2007Hi all,
I am running into a problem which seems to indicate SQL Server 2005 is pretty aggressive with its implicit conversion which makes UNPIVOT apparently unusable for my current task of creating attribute/value pairs of strings for each of the records unpivoted around the primary key.
WITH cte as
(
SELECT 1 as Code, '2' as Status, 'Some Guy' as CreatedBy, Convert(varchar(19), getdate(), 120) as CreatedDate
)
SELECT
[Code]
,[Attribute]
,[Value]
FROM
cte
UNPIVOT([Attribute] FOR [Value] IN ([Status],[CreatedBy],[CreatedDate])) as U;
Msg 8167, Level 16, State 1, Line 1
The type of column "CreatedBy" conflicts with the type of other columns specified in the UNPIVOT list.
The same result shows up if I use an inner SELECT instead of the CTE:
SELECT
[Code]
,[Attribute]
,[Value]
FROM
(
SELECT 1 as Code, '2' as Status, 'Some Guy' as CreatedBy, Convert(varchar(19), getdate(), 120) as CreatedDate
) cte
UNPIVOT([Attribute] FOR [Value] IN ([Status],[CreatedBy],[CreatedDate])) as U;
It seems to me that some arbitrary decision about what column is processed first is made and the process fails as soon as a column is met which is not of the same datatype. I also think it is interesting that the engine will implicitly cast from varchar to DateTime but not the other way around.
Any thoughts on how I can get around this?
Thanks in advance,
Calvin
Implicit Conversion In Query Analyzer
Dec 8, 2004I am trying to construct a query in Query Analyzer (with SQL Server 2000), but am getting an error regarding "implicit conversion."
Here is the query:
SELECT dbo.AUCTION.EbayNum, dbo.AUCTION.EndDate,
DATENAME([month], dbo.AUCTION.EndDate) + ' ' + DATENAME([year], dbo.AUCTION.EndDate) AS [PmtMonth],
dbo.LOT.Description, dbo.AUCTION.WinBid,
PaidStat = CASE dbo.AUCTION.PaidStatus
WHEN 0 THEN ''
ELSE 'PAID'
END,
PaidAmt = CASE dbo.AUCTION.PaidStatus
WHEN 0 THEN ''
ELSE dbo.AUCTION.WinBid
END
FROM dbo.AUCTION INNER JOIN
dbo.LOT ON dbo.AUCTION.LotNum = dbo.LOT.LotNum
WHERE (LEN(dbo.AUCTION.Winner) > 0)
The error occurs in the PaidAmt CASE statment:
"Implicit conversion from data type varchar to money is not allowed. Use the CONVERT function to run this query."
Why is there an implicit conversion going on? And how can I fix it? :mad:
Implicit Conversion Of Data Type
Oct 3, 2006Dear all,
Hi, I'm using this code to export record from sql to excel and i got this error message "Implicit conversion from data type text to nvarchar is not allowed. use the convert function to run this query"
Excel file is already created columns in the view and excel file are the same and cell format of the excel is converted to text.
--- code used
insert into OPENROWSET('Microsoft.Jet.OLEDB.4.0',
'Excel 8.0;Database=c:filename.xls;',
'SELECT * FROM [filename$]') select * from ViewName
thanks,
Difference Between Explicit Inner Join And Implicit
Mar 31, 2008Is there any difference between explicit inner join and implicitinner joinExample of an explicit inner join:SELECT *FROM employeeINNER JOIN departmentON employee.DepartmentID = department.DepartmentIDExample of an implicit inner join:SELECT *FROM employee, departmentWHERE employee.DepartmentID = department.DepartmentID
View 11 Replies View RelatedProblem With Implicit Conversion In Sql Server
Nov 16, 2007
I have a sql statement that must run in both sql server and oracle. I can't change the sql statement as it is created as part of a core application from Rational Rose.
Basically the problem is that I have a table with a column defined as a decimal type in sql server (numeric in oracle).
The select statement, however, treats the column as a char. I can reproduce the problem with this simple code:
create table atest2 (a decimal(9,0))
insert into atest2 values (1)
insert into atest2 values (2)
insert into atest2 values (null)
insert into atest2 values (4)
select * from atest2 where a = ' '
This gives the error:
Error converting data type varchar to numeric.
The documents seem to indicate the sql server will implicitly convert decimals to varchar but this doesn't seem to be happening. Is there an environment setting that might control this?
Thanks,
Rut
Problem With Implicit Conversion In Sql Server
Nov 16, 2007 have a sql statement that must run in both sql server and oracle. I can't change the sql statement as it is created as part of a core application from Rational Rose.
Basically the problem is that I have a table with a column defined as a decimal type in sql server (numeric in oracle).
The select statement, however, treats the column as a char. I can reproduce the problem with this simple code:
create table atest2 (a decimal(9,0))
insert into atest2 values (1)
insert into atest2 values (2)
insert into atest2 values (null)
insert into atest2 values (4)
select * from atest2 where a = ' '
This gives the error:
Error converting data type varchar to numeric.
The documents seem to indicate the sql server will implicitly convert decimals to varchar but this doesn't seem to be happening. Is there an environment setting that might control this?
Thanks,
Rut
Server Error - Disallowed Implicit Conversion ...
Aug 10, 2006Hi:
I get this following error when I run try to insert a record from the DetailsView. Please help me out.
---------------------------------------------------------------------------------------------------------------------
Disallowed implicit conversion from data type sql_variant to data type uniqueidentifier, table 'getsetwin.lax21.tblCreateGoal2', column 'ApplicationId'. Use the CONVERT function to run this query.Disallowed implicit conversion from data type sql_variant to data type uniqueidentifier, table 'getsetwin.lax21.tblCreateGoal2', column 'UserId'. Use the CONVERT function to run this query.Operand type clash: sql_variant is incompatible with image
---------------------------------------------------------------------------------------------------------------------
Thank you & Best regards,
Lax
Implicit Conversion Error - Adding Different Varchars Together
Aug 27, 2005Hi I get the following error:
Implicit conversion of varchar value to varchar cannot be done
because the collation of the value is unresoved due to a collation
conflict
SELECT
Accounts_Users.NameFirst + ' '
+ Accounts_Users.NameLast + ' (' + Accounts_Users.BusinessUnit + ')' AS
NameFull, -- Error here
-- Accounts_Users.NameFirst + ' ' + Accounts_Users.NameLast AS NameFull, -- This line works
Accounts_Users.EmailAddress, Accounts_Users.BusinessUnit
FROM Accounts_Users.Accounts_Users
NameFirst and NameLast are VarChar(30) and BusinessUnit VarChar(50), I
did try converting it to 30 also but still got the same error
The sp works on my dev sql server but not on the live one, I am using Management Console v2 (dev) and 1.2 (live server)
Thanks
Steve
Confused About Implicit Data Conversion Error
Jan 14, 2004Good Afternoon
Hope that somone can shed some light...
I am using the HitSoftware driver to pass data to an AS400 from a SQL 7 database. Data makes it fine to 2 of the 4 tables but I cannot get the syntax correct to even get out of the S/P edtitor in SQL for the other 2.
I have fields in the SQL S/P defined as VARCHAR. The target fields on the AS400 are ALPHA. So I figured the insert statement to look like:
INSERT INTO CALICOTOTESTAS400.S105Z1NM.ORDTALIB.itmrva0# (TRID30, ITNO30, ITDS30, ITYP30, INVF30, UMST30, ITAC30, UUCA30, EGNO30, RTID30)
VALUES (@v_action, @v_modelNumber, @v_modelDesc, '1', 1, 'EA', @v_acctClass, @v_modelyear, @v_engRevision, @v_spectype)
However, when I try to close the S/P window I get the error:
Error 257: Implicit conversion from data type varchar to binary is not allowed. Use the CONVERT function to run this query.
So, I changed the insert statement to this:
INSERT INTO CALICOTOTESTAS400.S105Z1NM.ORDTALIB.itmrva0# (TRID30, ITNO30, ITDS30, ITYP30, INVF30, UMST30, ITAC30, UUCA30, EGNO30, RTID30)
VALUES (CONVERT(binary, @v_action), CONVERT(binary, @v_modelNumber), CONVERT(binary, @v_modelDesc), CONVERT(binary, '1'), 1, CONVERT(binary, 'EA'), CONVERT(binary, @v_acctClass), CONVERT(binary, @v_modelyear), CONVERT(binary, @v_engRevision), CONVERT(binary,
@v_spectype))
Now the S/P closes without the error. But when I send it to the AS400 I get unrecognizable characters in the fields.
Then I started thinking...I am not trying to do anything with binary fields.
So I am really lost. Please help.
Thanks,
Ed 330-273-7521
Do Foreign Keys Generate Implicit Indexes?
Sep 21, 2007If i create a simple table with a foreign key constraint, does itcreate an implicit index on that given ID? I've been told this isdone in some databases, but i need to know for sure if SQL Server doesit. Has anyone heard of this before, on any other databses perhaps?Heres an example of how the foreign key constraint is being added:ALTER TABLE [dbo].[administrators] WITH CHECK ADD CONSTRAINT[FPSLUFSUOXZGAJOJ] FOREIGN KEY([AdministratorRoleID])REFERENCES [dbo].[administratorroles] ([AdministratorRoleID])My initial testing seems to indicate adding an index on the foreignkey column helps, but i need to know for sure. Any insight would begreatly appreciated!Bob
View 6 Replies View RelatedError 8525: Distributed Transaction Completed. Either Enlist This Session In A New Transaction Or The NULL Transaction.
May 31, 2008Hi All
I'm getting this when executing the code below. Going from W2K/SQL2k SP4 to XP/SQL2k SP4 over a dial-up link.
If I take away the begin tran and commit it works, but of course, if one statement fails I want a rollback. I'm executing this from a Delphi app, but I get the same from Qry Analyser.
I've tried both with and without the Set XACT . . ., and also tried with Set Implicit_Transactions off.
set XACT_ABORT ON
Begin distributed Tran
update OPENDATASOURCE('SQLOLEDB','Data Source=10.10.10.171;User ID=*****;Password=****').TRANSFERSTN.TSADMIN.TRANSACTIONMAIN
set REPFLAG = 0 where REPFLAG = 1
update TSADMIN.TRANSACTIONMAIN
set REPFLAG = 0 where REPFLAG = 1 and DONE = 1
update OPENDATASOURCE('SQLOLEDB','Data Source=10.10.10.171;User ID=*****;Password=****').TRANSFERSTN.TSADMIN.WBENTRY
set REPFLAG = 0 where REPFLAG = 1
update TSADMIN.WBENTRY
set REPFLAG = 0 where REPFLAG = 1
update OPENDATASOURCE('SQLOLEDB','Data Source=10.10.10.171;User ID=*****;Password=****').TRANSFERSTN.TSADMIN.FIXED
set REPFLAG = 0 where REPFLAG = 1
update TSADMIN.FIXED
set REPFLAG = 0 where REPFLAG = 1
update OPENDATASOURCE('SQLOLEDB','Data Source=10.10.10.171;User ID=*****;Password=****').TRANSFERSTN.TSADMIN.ALTCHARGE
set REPFLAG = 0 where REPFLAG = 1
update TSADMIN.ALTCHARGE
set REPFLAG = 0 where REPFLAG = 1
update OPENDATASOURCE('SQLOLEDB','Data Source=10.10.10.171;User ID=*****;Password=****').TRANSFERSTN.TSADMIN.TSAUDIT
set REPFLAG = 0 where REPFLAG = 1
update TSADMIN.TSAUDIT
set REPFLAG = 0 where REPFLAG = 1
COMMIT TRAN
It's got me stumped, so any ideas gratefully received.Thx
Implicit Conversion From Data Type Datetime To Int Is Not Allowed.
Apr 25, 2005Here is the situation...
I am using SQL Server 2000. I have created a Store Procedure to
insert information, 4 of the fields are date types. I am using
OleDb Data Provider (System.Data.OleDb) namespace.
The dates are filled by a form (web form) on submit event, I created a
class that has functions to create my OleDb Parameters. I add the
parameters to the command and execute it through a SQL Server Stored
Procedure. In the event that I must have coded something wrong, I
tested in the SQL Query Analyzer and the IN parameters for the date I
used the getDate() method. This is where I know it is OleDb and
SQL Server Parameters.
What Converstion Format should I use in the SP for the date?
OleDb.date are doubles from some date in 1979 or something or
another. So I used an OleDbDataType.DBDate. It seems that
when the Stored Procedure uses the IN Parameters dates provided by
OleDbDataType.Date or DBDate, that it doesn't like the int
format. I am guessing that I am not converting the date in the
parameters in the Insert of the Store Procedure... this is basically
what I have...
Function to add parameters and execute SP
private int _startdate = DateTime.Now;
private int _finishdate = DateTime.Now.AddDays(30);
OleDbParameter[] myParams = {
ParamBuilder("@StarDate", OleDbType.DBDate, 8, _startdate),
ParamBuilder("@FinishDate", OleDbType.DBDate, 8, _finishdate)
};
ExecuteNonQuery("myInsert", myParams);
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
CREATE PROCEDURE myInsert
@StartDate datetime, @FinishDate datetime AS
INSERT INTO myTable (STARTDATE, FINISHDATE)
VALUES (Convert(datetime, @StartDate), Convert(datetime, @FinishDate))
Please keep in mind that I am using System.Data.OleDb
namespace..... please don't tell me to use SQLClient, it seems
since I've been so adaptive of using OleDb, that it sould work just as
well. I am way too far into this to change my Provider to SQL
Client, but I promise myself that the next project (if using SQL
Server, I will be using SQLClient and I will keep using OleDb for
Oracle.) *sigh*
Help!
SQL Server 2012 :: Implicit Conversion Comparing INT Column To 0?
Sep 15, 2015In a stored procedure, the following code is causing a huge read and CPU load when it really shouldn't. The @IDParameter below is coming in as a parameter to the proc.
Here's the snippet of code where the problem is coming in:
DECLARE @ID INT;
SET @ID = (SELECT ID From OtherTable WHERE FKID = @IDParameter);
SELECT COUNT(*)
FROM LargeTable
WHERE MostlyZeroID = @ID AND MostlyZeroID > 0Most (90+%) of the MostlyZeroID rows are 0 (hence the name) but regardless of distribution this should evaluate with minimal work on SQL Server's part to 0. However, when this was run, it is using a ton of CPU and doing a ton of Reads as it seeks through the entire index. When I look at the execution plan, I see under the seek predicate a Scalar Operator(CONVERT_IMPLICIT(int,[@1],0)) which is what is destroying the performance.
I've confirmed that the MostlyZeroID column in the LargeTable is defined as an INT NOT NULL. I also tested the scenario outside the stored procedure without any variables as the following to make sure it wasn't some kind of strange parameter sniffing scenario:
SELECT COUNT(*)
FROM LargeTable
WHERE MostlyZeroID = 0 AND MostlyZeroID > 0
However, this query also did the implicit conversion. I then tried this out on a temp table populated with a similar number of records (100 million) with a similar distribution and I didn't get the implicit conversion (I got a constant scan as I would've expected) when I did this:
SELECT COUNT(*)
FROM #TestTable
WHERE MostlyZero = 0 AND MostlyZero > 0
I also tried the same on several other tables that are set up similarly (large amount of zeros in an INT column) and I always got a constant scan and didn't do an implicit conversion.
why the query engine is interpreting this 0 as something other than an INT and doing an implicit conversion when getting the count in the scenario above? What can be done to protect against it? In the above scenario, an IF @ID > 0 statement was placed before the code including the count since there was no reason to even run the code if the @ID was equal to zero.