I am using a poker application that imports all played hands into a PostgreSQL database. I'm trying to write some queries for that database so I can make good use of the data. I figure PostgreSQL and SQL server probably have similar language. And I know these forums are great. So I'm posting here for help.
This is a working code snippet that retreives three properties of a player:
Code Snippet
SELECT sum(totalhands) AS HANDS, sum(vpiphands) AS VPIPHANDS, sum(pfrhands) AS PFRHANDS FROM compiledplayerresults WHERE compiledplayerresults_id in ( SELECT compiledplayerresults_id FROM compiledresults WHERE play SELECT player_id FROM players WHERE playername='PLAYERNAME')); This is all I can do with my skills right now. However I very much want to learn to query for more things: - I'd like to be able to make a query for several players at the same time - I'd like to be able to get the aggregate properties for all players who are not PLAYERNAME1 or PLAYERNAME2 - I'd like to be able to get the aggregate vpiphands property from all players whose totalhandsis > 100 and < 1000.
I hope you can help me with that. If you can, that will make me very happy and grateful! Thanks!
Hi, I need help with updating a record. When I run the following code underneath the update button, the record does not update and I get no error message. Anyone have any ideas?
Code Snippet
Dim ListingID As String = Request.QueryString("id").ToString Dim Description As String = DescriptionTB.Text Dim PlaceName As String = PlaceNameTB.Text Dim Location As String = LocationTB.SelectedValue Dim PropertyType As String = LocationTB.SelectedValue Dim Price As Integer = PriceTB.Text Dim con As New SqlConnection(ListingConnection)
Dim sql As String = "Update Listings SET Description = ?, PlaceName = ?, Location = ?, PropertyType = ?, Price = ? WHERE ListingID = ?" Dim cmd As New SqlCommand(Sql, con)
I have created a trigger ON a table AFTER Insert, Update staement. In the trigger's body I am making a call to a stored procedure. In the procedure, I want to know the Trigger invoked due to which event : insert or Update as I have to handle bith the cases differently. But I am not able to find out any SQL server function or property which can distinguish between INSERT and Update events of a trigger.
I have created a trigger ON a table AFTER Insert, Update staement. In the trigger's body I am making a call to a stored procedure. In the procedure, I want to know the Trigger invoked due to which event : insert or Update as I have to handle bith the cases differently. But I am not able to find out any SQL server function or property which can distinguish between INSERT and Update events of a trigger.
I'm working on Application that requires me to check and display status of reports running on report server. My application calling ListJobs() function of Job class part of Reporting Services Web Service API. When i run my application i'm getting insufficient previleges error. So i need to find out what type of permission i need to excute ListJobs().
This is very important part of my app. Please help me out.
I am new at ASP.net and I am having problems inserting data using C# in ASP.netI have created a table named "Profile" in the MS sql server database named "MyDataBase". There is a field named "ID" that has data type 'uniqueidentifier'.I am confused how to INSERT data into this data field. I have used MS Access and MYSQL in which there is an option of auto increment so we don't a unique identifier for each record.Please tell me what can I do to If I want to have a uniqueidentifier for each new record I INSERT in the "Profile" table of MS sql server database.While trying to insert, I get following errorsCannot insert the value NULL into column 'ID'and I don't know how I can insert something in this field that is of value type unique identifier.Please help me I will be very thankfull of you.
Recently we observed a problem. We are running stored procedure through our c# code. Three machines access the server and update or insert in the required tables in the server. If there is no data in the server, on installing first time our application usually our database is clean. then stored procedure works fine, it takes around 10 to 15 sec to execute. Next time if execute the time goes up to minutes like 15 mins. Next time it goes for hours around 4 hrs. Even to update 4 or 5 records it takes time. Initially we thought it was because of the size of the data and we tried to re tune on indexes, it did not solve. But now what we observe is even with less number of records in server also it wouldn't come of the execution for hours. Now are executing the just the SP in the SQL manager studio to see the time. That one also is executing for hours. when looked at the activity monitor the process goes to suspend state with wait type ASYNC_NETWORK_IO.
When we comment one of the query is working fine. Is this something to do with the query I am not sure. If that is the case it should not work every time.
The query makes any sence or is there any way to write it in better way
'UPDATE [server].[dbo].[DocumentMetadata] SET DocumentInfoID = b.DocumentInfoID, [Name] = b.[Name], MetadataType = b.MetadataType, [Value] = b.[Value], ValueType = b.ValueType FROM [server].[dbo].[DocumentMetadata] a WITH (UPDLOCK) INNER JOIN (SELECT c.DocumentInfoID, c.[Name], c.MetadataType, c.[Value], c.ValueType FROM MACHINENAME.[Client].[dbo].[DocumentMetadata] c INNER JOIN MACHINENAME.[Client].dbo.DocumentInfo DINF ON c.DocumentInfoID = DINF.DocumentInfoID INNER JOIN MACHINENAME.[Client].dbo.Path d on DINF.NativeFileID = d.PathID INNER JOIN MACHINENAME.[Client].dbo.ActiveDataSource ADS ON d.DataSourceID = ADS.DataSourceID WHERE ADS.ProjectID = ''' + @ProjID + ''') b ON a.DocumentInfoID = b.DocumentInfoID AND a.[Name] = b.[Name]'
'INSERT INTO [server].[dbo].[DocumentMetadata] (DocumentInfoID, [Name], MetadataType, [Value], ValueType) SELECT c.DocumentInfoID, c.[Name], c.MetadataType, c.[Value], c.ValueType FROM MACHINENAME.[Client].[dbo].[DocumentMetadata] c INNER JOIN MACHINENAME.[Client].dbo.DocumentInfo DINF ON c.DocumentInfoID = DINF.DocumentInfoID INNER JOIN MACHINENAME.[Client].dbo.Path d on DINF.NativeFileID = d.PathID INNER JOIN MYCLI.[Client].dbo.ActiveDataSource ADS ON d.DataSourceID = ADS.DataSourceID WHERE ADS.ProjectID = ''' + @ProjID + ''' AND Ltrim(rtrim(c.DocumentInfoID))+ ltrim(rtrim(c.[Name])) NOT IN (SELECT Ltrim(rtrim(DocumentInfoID))+ ltrim(rtrim([Name])) FROM [server].[dbo].[DocumentMetadata])'
We have been fighting it out for so many days. Can anybody help
This is nutty. I never got this error on my local machine. The only lower case m in the sql is by near the variable Ratingsum like in line 59. [SqlException (0x80131904): Incorrect syntax near 'm'.An expression of non-boolean type specified in a context where a condition is expected, near 'type'.] System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection) +925466 System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) +800118 System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) +186 System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) +1932 System.Data.SqlClient.SqlCommand.RunExecuteNonQueryTds(String methodName, Boolean async) +196 System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(DbAsyncResult result, String methodName, Boolean sendToPipe) +269 System.Data.SqlClient.SqlCommand.ExecuteNonQuery() +135 view_full_article.btnRating_Click(Object Src, EventArgs E) +565 System.Web.UI.WebControls.Button.OnClick(EventArgs e) +105 System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +107 System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +7 System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +11 System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +33 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1746</pre></code> Here is my button click sub in its entirety: 1 Sub btnRating_Click(ByVal Src As Object, ByVal E As EventArgs) 2 'Variable declarations... 3 Dim articleid As Integer 4 articleid = Request.QueryString("aid") 5 Dim strSelectQuery, strInsertQuery As String 6 Dim strCon As String 7 Dim conMyConnection As New System.Data.SqlClient.SqlConnection() 8 Dim cmdMyCommand As New System.Data.SqlClient.SqlCommand() 9 Dim dtrMyDataReader As System.Data.SqlClient.SqlDataReader 10 Dim MyHttpAppObject As System.Web.HttpContext = _ 11 System.Web.HttpContext.Current 12 Dim strRemoteAddress As String 13 Dim intSelectedRating, intCount As Integer 14 Dim Ratingvalues As Decimal 15 Dim Ratingnums As Decimal 16 Dim Stars As Decimal 17 Dim Comments As String 18 Dim active As Boolean = False 19 Me.lblRating.Text = "" 20 'Get the user's ip address and cast its type to string... 21 strRemoteAddress = CStr(MyHttpAppObject.Request.UserHostAddress) 22 'Build the query string. This time check to see if IP address has already rated this ID. 23 strSelectQuery = "SELECT COUNT(*) As RatingCount " 24 strSelectQuery += "FROM tblArticleRating WHERE Itemid=" & articleid 25 strSelectQuery += " AND ip = '" & strRemoteAddress & "'" 26 'Open the connection, and execute the query... 27 strCon = System.Web.Configuration.WebConfigurationManager.ConnectionStrings("sqlConnectionString").ConnectionString 28 conMyConnection.ConnectionString = strCon 29 conMyConnection.Open() 30 cmdMyCommand.Connection = conMyConnection 31 cmdMyCommand.CommandType = System.Data.CommandType.Text 32 cmdMyCommand.CommandText = strSelectQuery 33 intCount = cmdMyCommand.ExecuteScalar() 34 intSelectedRating = Int(Me.rbRating.Text) 35 conMyConnection.Close() 36 'Close the connection to release these resources... 37 38 If intCount = 0 Then 'The user hasn't rated the article 39 'before, so perform the insert... 40 strInsertQuery = "INSERT INTO tblArticleRating (rating, ip, itemID, comment, active) " 41 strInsertQuery += "VALUES (" 42 strInsertQuery += intSelectedRating & ", '" 43 strInsertQuery += strRemoteAddress & "', " 44 strInsertQuery += articleid & ", '" 45 strInsertQuery += comment.Text & "', '" 46 strInsertQuery += active & "'); " 47 cmdMyCommand.CommandText = strInsertQuery 48 conMyConnection.Open() 49 cmdMyCommand.ExecuteNonQuery() 50 conMyConnection.Close() 51 Me.lblRating.Text = "Thanks for your vote!" 52 Comments = comment.Text.ToString 53 54 If Len(Comments) > 0 Then 55 emailadmin(comment.Text, articleid) 56 End If 57 'now update the article db for the two values but first get the correct ratings for the article 58 strSelectQuery = _ 59 "SELECT SUM(rating) As RatingSum, COUNT(*) As RatingCount " 60 strSelectQuery += "FROM tblArticleRating WHERE Itemid=" & articleid 61 conMyConnection.Open() 62 cmdMyCommand.CommandText = strSelectQuery 63 dtrMyDataReader = cmdMyCommand.ExecuteReader() 64 dtrMyDataReader.Read() 65 Ratingvalues = Convert.ToDecimal(dtrMyDataReader("RatingSum").ToString) 66 Ratingnums = Convert.ToDecimal(dtrMyDataReader("RatingCount").ToString) 67 Stars = Ratingvalues / Ratingnums 68 conMyConnection.Close() 69 'Response.Write("Values: " & Ratingvalues) 70 'Response.Write("Votes: " & Ratingnums) 71 72 UpdateRating(articleid, Stars, Ratingnums) 73 Else 'The user has rated the article before, so display a message... 74 Me.lblRating.Text = "You've already rated this article" 75 End If 76 strSelectQuery = _ 77 "SELECT SUM(rating) As RatingSum, COUNT(*) As RatingCount " 78 strSelectQuery += "FROM tblArticleRating WHERE Itemid=" & articleid 79 conMyConnection.Open() 80 cmdMyCommand.CommandText = strSelectQuery 81 dtrMyDataReader = cmdMyCommand.ExecuteReader() 82 dtrMyDataReader.Read() 83 Ratingvalues = Convert.ToDecimal(dtrMyDataReader("RatingSum").ToString) 84 Ratingnums = Convert.ToDecimal(dtrMyDataReader("RatingCount").ToString) 85 Stars = Ratingvalues / Ratingnums 86 If (Ratingnums = 1) And (Stars <= 1) Then 87 lblRatingCount.Text =" (" & (String.Format("{0:f2}", Stars)) & ") / " & dtrMyDataReader("RatingCount") & " Vote" 88 ElseIf (Ratingnums = 1) And (Stars > 1) Then 89 lblRatingCount.Text = " (" & (String.Format("{0:f2}", Stars)) & ") / " & dtrMyDataReader("RatingCount") & " Vote" 90 ElseIf (Ratingnums > 1) And (Stars <= 1) Then 91 lblRatingCount.Text =" (" & (String.Format("{0:f2}", Stars)) & ") / " & dtrMyDataReader("RatingCount") & " Votes" 92 ElseIf (Ratingnums > 1) And (Stars > 1) Then 93 lblRatingCount.Text = " (" & (String.Format("{0:f2}", Stars)) & ") / " & dtrMyDataReader("RatingCount") & " Votes" 94 End If 95 96 'Response.Write(String.Format("{0:f2}", Stars)) 97 'Response.Write("Values: " & Ratingvalues) 98 'Response.Write("Votes: " & Ratingnums) 99 If (Stars > 0) And (Stars <= 0.5) Then 100 Me.Rating.ImageUrl ="./images/rating/05star.gif" 101 ElseIf (Stars > 0.5) And (Stars < 1.0) Then 102 Me.Rating.ImageUrl = "./images/rating/05star.gif" 103 ElseIf (Stars >= 1.0) And (Stars < 1.5) Then 104 Me.Rating.ImageUrl = "./images/rating/1star.gif" 105 ElseIf (Stars >= 1.5) And (Stars < 2.0) Then 106 Me.Rating.ImageUrl = "./images/rating/15star.gif" 107 ElseIf (Stars >= 2.0) And (Stars < 2.5) Then 108 Me.Rating.ImageUrl = "./images/rating/2star.gif" 109 ElseIf (Stars >= 2.5) And (Stars < 3.0) Then 110 Me.Rating.ImageUrl = "./images/rating/25star.gif" 111 ElseIf (Stars >= 3.0) And (Stars < 3.5) Then 112 Me.Rating.ImageUrl = "./images/rating/3star.gif" 113 ElseIf (Stars >= 3.5) And (Stars < 4.0) Then 114 Me.Rating.ImageUrl = "./images/rating/35star.gif" 115 ElseIf (Stars >= 4.0) And (Stars < 4.5) Then 116 Me.Rating.ImageUrl = "./images/rating/4star.gif" 117 ElseIf (Stars >= 4.5) And (Stars < 5.0) Then 118 Me.Rating.ImageUrl = "./images/rating/45star.gif" 119 ElseIf (Stars >= 4.5) And (Stars <= 5.0) Then 120 Me.Rating.ImageUrl = "./images/rating/5star.gif" 121 End If 122 dtrMyDataReader.Close() 123 conMyConnection.Close() 124 End Sub
If you want to reduplicate the error, click over here and try to submit a rating: http://www.link-exchangers.com/view_full_article.aspx?aid=51 Thanks for helping me figure this out.
Happy Friday! A while since I have posted a question, and this one is probably real easy. I am trying to store numeric values from a php form in MSSQL 2000 database. However, the columns are set to float and if the value is 1.00, when entered into the table it is saved as 1
If I change the column type to money, the query fails, with an error message of conversion of datatype varchar to datatype money statement terminated.
anybody know what I need to do? do I need to do something in my query to specify that this is NOT varchar data?
I like to define my procedure parameter type to match a referenced table colum type, similar to PL/SQL "table.column%type" notation. That way, when the table column is changes, I would not have to change my stored proc. Any suggestion?
The table in SQL has column Availability Decimal (8,8)
Code in c# using sqlbulkcopy trying to insert values like 0.0000, 0.9999, 29.999 into the field Availability we tried the datatype float , but it is converting values to scientific expressions€¦(eg: 8E-05) and the values displayed in reports are scientifc expressions which is not expected we need to store values as is
Error: base {System.SystemException} = {"The given value of type SqlDecimal from the data source cannot be converted to type decimal of the specified target column."}
"System.InvalidOperationException: The given value of type SqlDecimal from the data source cannot be converted to type decimal of the specified target column. ---> System.InvalidOperationException: The given value of type SqlDecimal from the data source cannot be converted to type decimal of the specified target column. ---> System.ArgumentException: Parameter value '1.0000' is out of range. --- End of inner exception stack trace --- at System.Data.SqlClient.SqlBulkCopy.ConvertValue(Object value, _SqlMetaData metadata) --- End of inner exception stack trace --- at System.Data.SqlClient.SqlBulkCopy.ConvertValue(Object value, _SqlMetaData metadata) at System.Data.SqlClient.SqlBulkCopy.WriteToServerInternal() at System.Data.SqlClient.SqlBulkCopy.WriteRowSourceToServer(Int32 columnCount) at System.Data.SqlClient.SqlBulkCopy.WriteToServer(DataTable table, DataRowState rowState) at System.Data.SqlClient.SqlBulkCopy.WriteToServer(DataTable table) at MS.Internal.MS COM.AggregateRealTimeDataToSQL.SqlHelper.InsertDataIntoAppServerAvailPerMinute(String data, String appName, Int32 dateID, Int32 timeID) in C:\VSTS\MXPS Shared Services\RealTimeMonitoring\AggregateRealTimeDataToSQL\SQLHelper.cs:line 269"
Code in C#
SqlBulkCopy bulkCopy = new SqlBulkCopy(sqlConnection, SqlBulkCopyOptions.Default); DataRow dr; DataTable dt = new DataTable(); DataColumn dc;
try {
dc = dt.Columns.Add("Availability", typeof(decimal)); €¦.
dr["Availability"] = Convert.ToDecimal(s[2]); ------ I tried SqlDecimal €¦€¦€¦.
Implement time interval type in the form of a user defined type in SS2k8r2? Specifically an interval type described in the book Temporal Data and the Relational Model by C. J. Date at all. As an example, an interval is below:
1/4/2006:1/10/2006
which would mean the time period from 1/4 to 1/10.
I am trying to use the Bulk Insert Task to load from a csv file. My final column is a bit that is nullable. My file is an ID column that is int, a date column that is mm/dd/yyy, then 20 columns that are real, and a final column that is bit. I've tried various combinations of codepage and datafiletype on my task component. When I have RAW with Char, I get the error included below. If I change to RAW/Native or codepage 1252, I don't have an issue with the bit; however, errors start generating on the ID and date columns.
I have tried various data type settings on my flat file connection, too. I have tried DT_BOOL and the integer datatypes. Nothing seems to work.
I hope someone can help me work through this.
Thanks in advance,
SK
SSIS package "Package3.dtsx" starting.
Error: 0xC002F304 at Bulk Insert Task, Bulk Insert Task: An error occurred with the following error message: "Cannot fetch a row from OLE DB provider "BULK" for linked server "(null)".The OLE DB provider "BULK" for linked server "(null)" reported an error. The provider did not give any information about the error.The bulk load failed. The column is too long in the data file for row 1, column 24. Verify that the field terminator and row terminator are specified correctly.Bulk load data conversion error (type mismatch or invalid character for the specified codepage) for row 1, column 23 (cancelled).".
Error: 0xC002F304 at Bulk Insert Task 1, Bulk Insert Task: An error occurred with the following error message: "Cannot fetch a row from OLE DB provider "BULK" for linked server "(null)".The OLE DB provider "BULK" for linked server "(null)" reported an error. The provider did not give any information about the error.The bulk load failed. The column is too long in the data file for row 1, column 24. Verify that the field terminator and row terminator are specified correctly.Bulk load data conversion error (type mismatch or invalid character for the specified codepage) for row 1, column 23 (cancelled).".
Task failed: Bulk Insert Task 1
Task failed: Bulk Insert Task
Warning: 0x80019002 at Package3: The Execution method succeeded, but the number of errors raised (2) reached the maximum allowed (1); resulting in failure. This occurs when the number of errors reaches the number specified in MaximumErrorCount. Change the MaximumErrorCount or fix the errors.
Hi all, I am developing ASP.NET 1.1 application using VB.NET & SQL Server, on my machine I am using SQL Server 2000, and everything is working just fine. The problem appears when I uploaded the site to the Host, they are using SQL Server 2005, is there any reason for this, I am using casting in the code, and I am sure there is something wrong with the hosting settings. Any suggestions. Best Regards Wafi Mohtaseb
Hello Friends How are you?? Friends i am getting problem in SQL Server 2005. I am deployng web application on production server as well as Databse also. In production server i inserted new field in all tables which is rowguid and its type is uniqueidentifier. The default binding for this field is newsequentialid(). In some pages it works ok but in some places it generates error like 'Conversion from type 'DBNull' to type 'String' is not valid'. Can anybody help me to solve this problem. Its urgent so plz reply me as soon as possible. I'll be very thankfull to you. Thanks in Advance. Regards,
I have extensively revied both of the design methodologies and I cannot come up with a single clear reason to use one over the other!
Type - Attributes is where you have a table holding the type categories, type, a table holding the type attributes expected and then a table holding the type attribute value:
Now the above sure is flexible in the sence that a type of automobile can be added without affecting the database schema, but was if some attributes do not take a numeric value? How do you handle computations on attributes specific attributes? Why would I use this structure as opposed to the super type - sub type as shown below?
Now, adding new sub types probably isn't very flexible but, now you can specify data types for each attribute instead of using sql_variant, which by the documentation cannot be used in aggregate functions and may render poor result when used with ADO.
Regardless of the method used, alot of back end coding is required for computations, what table to send the attributes, etc...
Can anyone please help me clarify. What method is best and why. So far I am leaning for option 2. More work but seems to be more flexible in the sence of customization of each datatype.
E.G., what if you wanted to specify attributes about the cap that can be supplied to trucks?
I'm trying to use the SSIS Execute SQL Task to pull XML from a SQL 2005 database table. The SQL is of the following form:
SELECT (
SELECT MT.MessageId 'MessageId', MT.MessageType 'MessageType', FROM MessageTable MT ORDER BY MT.messageid desc FOR XML PATH('MessageStatus'), TYPE
) FOR XML PATH('Report'), TYPE
For some reason I can only get this query to work if I use an ADO.NET connection type. If I try to use something like the OLEDB connection I get the following error:
<ROOT><?MSSQLError HResult="0x80004005" Source="Microsoft XML Extensions to SQL Server" Description="No description provided"?></ROOT>
Can anyone tell me why the SELECT ... FOR XML PATH... seems only to work with ADO.NET connections?
I am having a UDT problem. When I run the Create Type command. I receive the "could not find type" error. I have seen other posts on here related to the default namespace in VB.NET. When I add the namespace I receive "Incorrect syntax near '.'." What is the format of the EXTERNAL NAME parameter. Thanks for any help. Code below...
Incorrect Syntax Error:
DROP ASSEMBLY CadSqlUdtsCREATE ASSEMBLY CadSqlUdtsAUTHORIZATION [dbo]FROM 'E:CAD.NETCADUDTsReleaseCadSqlUdts.dll'WITH PERMISSION_SET = SAFEGOCREATE TYPE dbo.ReportingAreaUDTEXTERNAL NAME CadSqlUdts.[CadSqlUdts.CadSqlUdts].ReportingAreaUDT;GO
Could Not Find Type Error:
DROP ASSEMBLY CadSqlUdtsCREATE ASSEMBLY CadSqlUdtsAUTHORIZATION [dbo]FROM 'E:CAD.NETCADUDTsReleaseCadSqlUdts.dll'WITH PERMISSION_SET = SAFEGOCREATE TYPE dbo.ReportingAreaUDTEXTERNAL NAME CadSqlUdts.ReportingAreaUDT;GO What's up??
HelloWhen I use a PreparedStatement (in jdbc) with the following query:SELECT store_groups_idFROM store_groupsWHERE store_groups_id IS NOT NULLAND type = ?ORDER BY group_nameIt takes a significantly longer time to run (the time it takes forexecuteQuery() to return ) than if I useSELECT store_groups_idFROM store_groupsWHERE store_groups_id IS NOT NULLAND type = 'M'ORDER BY group_nameAfter tracing the problem down, it appears that this is not preciselya java issue, but rather has to do with the underlying cost of runningparameterized queries.When I open up MS Enterprise Manager and type the same query in - italso takes far longer for the parameterized query to run when I usethe version of the query with bind (?) parameters.This only happens when the table in question is large - I am seeingthis behaviour for a table with > 1,000,000 records. It doesn't makesense to me why a parameterized query would run SLOWER than acompletely ad-hoc query when it is supposed to be more efficient.Furthermore, if one were to say that the reason for this behaviour isthat the query is first getting compliled and then the parameters aregetting sent over - thus resulting in a longer percieved executiontime - I would respond that if this were the case then A) it shouldn'tbe any different if it were run against a large or small table B) thisperformance hit should only be experienced the first time that thequery is run C) the performance hit should only be 2x the time for thenon-parameterized query takes to run - the difference in response timeis more like 4-10 times the time it takes for the non parameterizedversion to run!!!Is this a sql-server specific problem or something that would pertainto other databases as well? I there something about the coorect use ofbind parameters that I overall don't understand?If I can provide some hints in Java then this would be great..otherwise, do I need to turn/off certain settings on the databaseitself?If nothing else works, I will have to either find or write a wrapperaround the Statement object that acts like a prepared statement but inreality sends regular Statement objects to the JDBC driver. I wouldthen put some inteligence in the database layer for deciding whetherto use this special -hack- object or a regular prepared statementdepending on the expected overhead. (Obviously this logic would onlybe written in once place.. etc.. IoC.. ) HOWEVER, I would desperatelywant to avoid doing this.Please help :)
I am trying to put the data from a field in my database into a row in a table using the SQLDataSource.Select statement. I am using the following code: FileBase.SelectCommand = "SELECT Username FROM Files WHERE Filename = '" & myFileInfo.FullName & "'" myDataRow("Username") = CType(FileBase.Select(New DataSourceSelectArguments()), String)But when I run the code, I get the following error:Server Error in '/YorZap' Application. Unable to cast object of type 'System.Data.DataView' to type 'System.String'. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.InvalidCastException: Unable to cast object of type 'System.Data.DataView' to type 'System.String'.Source Error: Line 54: FileBase.SelectCommand = "SELECT Username FROM Files WHERE Filename = '" & myFileInfo.FullName & "'" Line 55: 'myDataRow("Username") = CType(FileBase.Select(New DataSourceSelectArguments).GetEnumerator.Current, String) Line 56: myDataRow("Username") = CType(FileBase.Select(New DataSourceSelectArguments()), String) Line 57: Line 58: filesTable.Rows.Add(myDataRow)Source File: D:YorZapdir_list_sort.aspx Line: 56 Stack Trace: [InvalidCastException: Unable to cast object of type 'System.Data.DataView' to type 'System.String'.] ASP.dir_list_sort_aspx.BindFileDataToGrid(String strSortField) in D:YorZapdir_list_sort.aspx:56 ASP.dir_list_sort_aspx.Page_Load(Object sender, EventArgs e) in D:YorZapdir_list_sort.aspx:7 System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +13 System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +45 System.Web.UI.Control.OnLoad(EventArgs e) +80 System.Web.UI.Control.LoadRecursive() +49 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3743 Version Information: Microsoft .NET Framework Version:2.0.50727.42; ASP.NET Version:2.0.50727.210 Please help me!
I am stuck with a SSIS package and I can€™t work out. Let me know what steps are the correct in order to solve this. At first I have just a Flat File Source and then Script Component, nothing else.
Error:
[Script Component [516]] Error: System.InvalidCastException: Unable to cast COM object of type 'System.__ComObject' to class type 'System.Data.SqlClient.SqlConnection'. Instances of types that represent COM components cannot be cast to types that do not represent COM components; however they can be cast to interfaces as long as the underlying COM component supports QueryInterface calls for the IID of the interface. at Microsoft.SqlServer.Dts.Pipeline.ScriptComponentHost.HandleUserException(Exception e) at Microsoft.SqlServer.Dts.Pipeline.ScriptComponentHost.AcquireConnections(Object transaction) at Microsoft.SqlServer.Dts.Pipeline.ManagedComponentHost.HostAcquireConnections(IDTSManagedComponentWrapper90 wrapper, Object transaction)
Script Code (from Script Component):
' Microsoft SQL Server Integration Services user script component ' This is your new script component in Microsoft Visual Basic .NET ' ScriptMain is the entrypoint class for script components
Imports System Imports System.Data.SqlClient Imports System.Math Imports Microsoft.SqlServer.Dts.Pipeline.Wrapper Imports Microsoft.SqlServer.Dts.Runtime.Wrapper
Public Class ScriptMain Inherits UserComponent
Dim nDTS As IDTSConnectionManager90 Dim sqlConnecta As SqlConnection Dim sqlComm As SqlCommand Dim sqlParam As SqlParameter
Public Overrides Sub Input0_ProcessInputRow(ByVal Row As Input0Buffer)
Dim valorColumna As String Dim valorColumna10 As Double
valorColumna = Row.Column9.Substring(1, 1)
If valorColumna = "N" Then valorColumna10 = -1 * CDbl(Row.Column10 / 100) Else valorColumna10 = CDbl(Row.Column10 / 100) End If
Executed SQL statement: SELECT Schoolindex, Variant, VVSchool, [index], indincl, VVRuimtes, School FROM School WHERE (Schoolindex = @PARAM1)
Error Source: SQL Server Compact Edition ADO.NET Data Provider
Error Message: @PARAM1 : Unable to cast object of type 'System.Data.SqlTypes.SqlInt32 to type System.IConvertable'. ****************************************
The same querypreview works fine without the parameter:
SELECT Schoolindex, Variant, VVSchool, [index], indincl, VVRuimtes, School FROM School WHERE (Schoolindex = 186)
Can anybody tell me why this is? And tell me a way to get the tableadapter working?
Hi all,I have a table called PTRANS with few columns (see create script below).I have created a view on top that this table VwTransaction (See below)I can now run this query without a problem:select * from dbo.VwTransactionwhereAssetNumber = '101001' andTransactionDate <= '7/1/2003'But when I create an index on the PTRANS table using the command below:CREATE INDEX IDX_PTRANS_CHL# ON PTRANS(CHL#)The same query that ran fine before, fails with the error:Server: Msg 242, Level 16, State 3, Line 1The conversion of a char data type to a datetime data type resulted inan out-of-range datetime value.I can run the same query by commeting out the AssetNumber clause and itworks fine. I can also run the query commenting out the TransactionDatecolumn and it works fine. But when I have both the conditions in theWHERE clause, it gives me this error. Dropping the index solves theproblem.Can anyone tell me why an index would cause a query to fail?Thanks a lot in advance,AmirCREATE TABLE [PTRANS] ([CHL#] [varchar] (100) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,[CHCENT] [numeric](2, 0) NOT NULL ,[CHYYMM] [numeric](4, 0) NOT NULL ,[CHDAY] [numeric](2, 0) NOT NULL ,[CHTC] [char] (2) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL) ON [PRIMARY]GOCREATE VIEW dbo.vwTransactionsASSELECT CONVERT(datetime, dbo.udf_AddDashes(REPLICATE('0', 2 -LEN(CHCENT)) + CONVERT(varchar, CHCENT) + REPLICATE('0', 4 -LEN(CHYYMM))+ CONVERT(varchar, CHYYMM) + REPLICATE('0', 2 -LEN(CHDAY)) + CONVERT(varchar, CHDAY)), 20) AS TransactionDate,CHL# AS AssetNumber,CHTC AS TransactionCodeFROM dbo.PTRANSWHERE (CHCENT <> 0) AND (CHTC <> 'RA')*** Sent via Developersdex http://www.developersdex.com ***Don't just participate in USENET...get rewarded for it!
I have a ntext column which stores rows of xml data. Ive decided that the best way to query the xml data is to Convert the ntext data into xml data type and use Sql Server 2005 builtin Xml Query tools to perform FLWOR expressions. The problem Im having is getting the ntext data Converted to xml.When I try to convert the ntext text, I of course get an error that local variables of ntext type are invalid.Any suggestions on a way I might accomplish this?Thanks, -lance
Hi Is it possibly in SqlDataSource's SelectCommad to convert a text-type value to a date-type value (11/1/2008 (text) -> 11/1/2008 (date) ) , so that order by can be used. Or is the other ways to use order by correctly with text-type (date)values Thanks.
I'm getting this error on a vb.net page the needs to execute two separate stored procedures. The first one, is the main insert, and returns the identity value for the ClientID. The second stored procedure inserts data, but needs to insert the ClientID returned in the first stored procedure. What am I doing wrong with including the identity value "ClientID" in the second stored procedure? Unable to cast object of type 'System.String' to type 'System.Web.UI.WebControls.Parameter'. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.InvalidCastException: Unable to cast object of type 'System.String' to type 'System.Web.UI.WebControls.Parameter'.Source Error:
Line 14: If li.Selected Then Line 15: InsertClientCompanyType.InsertParameters("CompanyTypeID").DefaultValue = li.Value Line 16: InsertClientCompanyType.InsertParameters("ClientID") = ViewState("ClientID") Line 17: Line 18: Source File: C:InetpubwwwrootIntranetExternalAppsNewEmploymentClientNewClient.aspx.vb Line: 16 Here is my code behind... What am I doing wrong with grabbing the ClientID from the first stored procedure insert?
Protected Sub InsertNewClient_Inserted(ByVal sender As Object, ByVal e As SqlDataSourceStatusEventArgs)ClientID.Text = e.Command.Parameters("@ClientID").Value.ToString()ViewState("ClientID") = e.Command.Parameters("@ClientID").Value.ToString()End SubProtected Sub Submit_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Submit.ClickInsertNewClient.Insert()For Each li As ListItem In CompanyTypeID.Items If li.Selected ThenInsertClientCompanyType.InsertParameters("CompanyTypeID").DefaultValue = li.ValueInsertClientCompanyType.InsertParameters("ClientID") = ViewState("ClientID")InsertClientCompanyType.Insert()End IfNextEnd Sub
I have an application which runs successfully on a couple of my customer's machines but fails on a third. It seems to fail when opening the database:
Unable to cast COM object of type 'ADODB.CommandClass' to interface type 'ADODB._Command'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{B08400BD-F9D1-4D02-B856-71D5DBA123E9}' failed due to the following error: No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE)). Provider=SQLOLEDB.1;Integrated Security=SSPI;Persist Security Info=false; Initial Catalog=lensdb;Data Source = SQL
Before I got this error I was getting another problem (sorry didn't make a copy of that error's text) that made me think that adodb.dll simply wasn't loaded/registered. I got rid of that error by copying my adodb.dll onto the third machine and running gacutil /i. There is now an entry in winntassemblies for adodb.
Just in case you think it could be an obvious registry problem: when I started getting the current error I thought that maybe the registry needed updating and I merged the following lines into onto the target machine (from my dev machine):
Hi, I have developed a custom server control for .NET Framework 2.0. The server control has a property named BinaryData of type byte[]. I marked this property to be data bindable. Now, I have varbinary(Max) type of field in my SQL Database and I have used SQLDataSource and bound this varbinary(Max) field with the property BinaryData (byte[]) of my control. It is working fine as long as the data value is not NULL. Now, In my control, I have handled the NULL value so that no Exception is thrown. Still, when I bind this property using the SQLDataSource, I get Error "Unable to cast object of type 'System.DBNull' to type 'System.Byte[]'." I am not sure if I can do anything to stop this erro within my control. If it is not possible from the control, then what is the workaround that I can do in my ASPX page in order to stop this error ? Thanks a lot in advance.
Hi, I got this field (dateSubmitted) having a data type of DateTime but I receive this error "Unable to cast object of type 'System.DateTime' to type 'System.String'." All value for dateSubmitted field are 12/27/2007 12:00:00 AM. cheers,imperialx
I can populate a dataTable with type double (C#) of say '1055.01' however when I save these to the CE3.5 database using a float(CE3.5) I lose the decimal portion. The 'offending' code is:
