ODB Datareader Time Columns
May 26, 2006
I am using an ODBC Datareader to connect to a proprietary DB (Epex) and I need help on column mappings.
The Epex database has a number of time columns which we successfully imported using SQL 2000 DTS by defining these as varchar(5).
When using SSIS (Service Pack 1) these fields are shown as 'eight-byte signed integer [DT_I8]'.
I have attempted to these columns to both [DT_WSTR] and [DT_STR]' without success.
I can change the External Column type to [DT_WSTR] but I am unable to alter the Output Coulmns, when doing so I get the following error message:
Error at Data Flow Task [DataReader Source [1]]: The data type of output columns on the component "DataReader Source" (1) cannot be changed.
Does anyone know how to resolve this issue?
Regards
JLF
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Oct 3, 2007
I have a data source that I access via odbc in a DataReader Source component in SSIS. I can access the data fine. However, I am having problems with certain fields that are numeric (specifically home prices ranging from 100,000.00 to 99,999,999.00). In the advanced editor for my data reader source under the input and output properties tab, in data reader output under the external columns and output columns, these fields for some reason default to numeric data types with a precision of 4 and a scale of zero, not large enough to hold the data that is coming in. This causes errors that make the data come in as null (after i specify to ignore the errors).
I can change the precision and scale to 18 and 4 in the external columns, but when I try to change the datatype, precision or scale in the output columns I get the following message:
Property Value is not valid.
The details are:
Error at Import DataReader Source: The data type of output columns on the component "DataReader Source" cannot be changed.
Error at DataReader Source: System.Runtime.InteropServices.COMException (0xC020837D)
at Microsoft.SqlServer.Dts.Pipeline.DataReaderSourceAdapter.SetOutputColumnDataTypeProperties(Int32 iOutputID, Int32 iOutputColumnID, DataType eDataType, Int32 iLength, Int32 iPrecision, Int32 iScale, Int32 iCodePage)
at Microsoft.SqlServer.Dts.Pipeline.ManagedComponentHost.HostSetOutputColumnDataTypeProperties(IDTSManagedComponentWrapper90 wrapper, Int32 iOutputID, Int32 iOutputColumnID, DataType eDataType, Int32 iLength, Int32 iPrecision, Int32 iScale, Int32 iCodePage)
Any help is greatly appreciated.
Dave
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Aug 27, 2007
how can i retrieve two columns from sqltable with - seperating the results and a common column name
someth like this
select id ,name from user
id name
1 a
2 b
3 c
i need the result set to be
my_reports
1-a
2-b
3-c
is that possible, if so, could anyone tell me how to do?
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Jun 18, 2002
Good morning,
I want to update two columns in the same time by making a select from another table. Some think like the following;
Update TBL1 o set (o.COL1,o.COL2) =
(select f.COL1,f.COL2 from TBL2 f where f.PKY = o.PKY)
where o.COL3 = 100;
Thinks to helping me .
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Jul 3, 2007
Hi please help me out !!
I have to update the incidents table.
The initiator and initdept are two corresponding columns in incidents table whoes value I have to get from another table Employee where (initiator means Empname and initdept means title)
if i just do
select Empname,title from employee
it gives me correct output while
select initiator,initdept from incidents
It gives the initiator correct but instead of giving the initdept
it gives output as initaiator
The Output is given below
initiator initdept
Jeff C. Taylor Jeff C. Taylor
Randy S. Jonas Randy S. Jonas
Mike lewis Mike lewis
it should give the out put like
initiator initdept
Jeff C. Taylor Software Engg
Randy S. Jonas Tester
I hope you got my question!
now I hav to update incidents table such that it should give initiator as well as its corrosponding initdept
thanks
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Sep 11, 2007
In order to allow my customers to use their existing data and install updated application, I want to be able to add columns to existing CE tables at startup time, and allow the user to enter data into the new column(s) immediately. I used the ALTER TABLE command as shown in the example below:
cmd.CommandText = "ALTER TABLE tblStores ADD dtDemoDate datetime, dtDemoMode int"
cmdexe = cmd.ExecuteNonQuery()
To add the column, But this does not set the columns in the attached dataset. The program sees the columns and data is able to be added, but is not then in the underlying table? What else do I need to do?
Thank you - b2bMan
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Mar 11, 2002
Hi
I have a 2 Tables EMP, STU
In EMP Table there is a Column "Country"
In STU Table there is a Column "City"
Where the EMPID = STUID
on this conditon how can i update those 2 columns
This is for one Table one column update how can i do 2 at a time
I don't want to do in 2 seperate UPDATE statements
UPDATE EMP
SET EMP.Country = 'USA'
WHERE EMP.EMPID = STU.STUID
Can some one can help me to fix this issue..
From
Madhavi
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May 14, 2004
HI,
I AM HAVING A TABLE WHICH HAS INCREMENTAL COLUMNS,WHERE COLUMNS GETS ADDED EVERY MONTH TO THE TABLE AND THE TABLE THEN CONTAINS PREVIOUS MONTH AND PRESENT MONTH DATA ABOUT CUSTOMERS ,DETAILS AND TRANSACTIONS.
THE PROBLEM WITH THIS DATA IS ,IF THE CUSTOMER IS NEW ,THEN IN PREVIOUS MONTHS HIS INFORMATION IS NULL,WHICH HAVE TO BE CODED HAS "NOT PRESENT".
NOW,
HOW DO WE CONVERT ALL THE PREVIOUS COLUMNS FOR A PARTICULAR CUSTOMER HAS NULL AT THE SAME TIME ?.
HERE IS HOW THE PROC WRITTENED FOR IT GOES :-
DROP PROCEDURE DE_NAT
CREATE PROCEDURE DE_NAT
AS
BEGIN
DECLARE @MONMIN1 NVARCHAR(100),MON NVARCHAR(100),@YEAR NVARCHAR(100) , @MONYEAR NVARCHAR(100)
SET @MONMIN1 = DATENAME((MONTH),DATEADD(MONTH,-1,GETDATE()))
SET @MON = MONTH(GETDATE())
SET @YEAR = YEAR(GETDATE())
SET @MONYEAR = @MON + @YEAR
EXEC('select A.CUSTOMERS,B.*,CAST(A.RFM_40D AS FLOAT) AS R40
INTO TSD_' + @MONYEAR
+ ' from TSD_20 A
LEFT OUTER JOIN SD20 ' + @MONMIN1 + ' B
ON A.CUSTOMERS = B.CUSTOMER')
END
THIS PROC JUST ADDS THE PRESENT MONTHS DATA TILL LAST MONTHS DATA.
BUT IF A CUSTOMER IS NEW, THEN HOW DO I REPLACE THE NULL VALUES FOR THE PREVIOUS DATA TO 'NOT PRESENT'
FOR EG :- IF THERE IS A NEW CUSTOMER ,HOW DO WE CHANGE :-
CUSTOMERS ERTYYTRE RTYUUYTR TYUIIUYT QWERREWQ DFGHHGFD
----------- ---------- ---------- ---------- ----------- ----------
101023 <NULL> <NULL> <NULL> <NULL> 1.0
102022 1.0 1.62.3 3.4 4.5
NOW, AS YOU CAN SEE, THAT FOR CUSTOMERS = '101023'.
THE COLUMN DFGHHGFD IS, THIS MONTHS DATA , I WANT TO CHANGE ALL NULL VALUES PRESIDING IT AS "INACTIVE"
CAN I CHANGE , ALL COLUMNS FROM NULL TO "INACTIVE" , AT THE SAME TIME. ?
AS NEXT MONTH, AGAIN THE COLUMNS IS GONNA INCREASE WHICH WILL
AGAIN CAUSE A PROBLEM .
PLS TELL ME A METHOD , SO THAT I CAN DO THE NEEDFUL.
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Oct 29, 2014
I have three different columns, hour(s), min(s), sec(s)
I can add it up, but will like to convert it into. hrs, mins and sec.
this is how, i am adding it up into seconds.
SELECT ((TotalTimeSpentHrs*60*60)+(TotalTimeSpentMin*60)+(TotalTimeSpentSec))AS totaltime
FROM EST1
How can I convert the total seconds, so that i can input the result in a new column.
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Dec 4, 2006
Hi all
ALTER TABLE <Table_Name> ALTER COLUMN <column_name> <Data_type>
above query alters the sigle column but how to alter multiple columns at time
saivyshnav
Junior DBA
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Aug 28, 2007
adate atime
08-21-2007 11:09
08-20-2007 16:49
08-03-2007 00:39
I would like to combine adate with atime to get adatetime
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Sep 12, 2007
I have Table1 with 2 columns Label_ID and Athlete_ID, I have another Table2 with 3 columns Label_ID, Athlete_ID, Data.
I need join this tables so the result table will have the same number of rows as Table1 and have extra column add Data which will correspond to Data in Table2 if Label_ID an Athlete_ID are matched and NULL if no matches found.
I have following query which does not produce desired result
SELECT Table1.label_id, Table1.athlete_id, data FROM Table1 LEFT OUTER JOIN Table2 on (Table1.label_id = Table2.label_id AND Table1.athlete_id = Table2.athlete_id)
The end result of this is table with only rows where label_id and athlete_id are matched between tables but no results when they are not. I expected OUTER JOIN to have those result but it's not working for whatever reason.
I'm pretty sure it's simple solution but can not figure out myself.
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May 17, 2005
Hi all!
If I have some mdx I'm using in reporting services like this:
select
{ [TimeByMinute].[All TimeByMinute].[2005].[May].[1] : [TimeByMinute].[All TimeByMinute].[2005].[May].[6] } on columns,
{A_list_of_measures } on rows
from ACD_Calls
The column names are unique to the day of month- which means when I use a table to display this in reporting services, the field names change dynamically when the date parameters change which means the table stops working.
I'll post this in reporting services too but I thought maybe I could alias the column names in mdx shielding the reporting services table from changes in dates.
What do you think? Would a matrix be more flexible in this case?
Richard
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Mar 26, 2012
I have 2 tables:
TransactionsImport (which is the destination table)
TransactionsImportDelta
I need to do the following:
Get the records with the latest date and time in the destination table TransactionsImport
Get the records with the latest date and time in the destination table TransactionsImportDelta table
Insert the records from the TransactionsImportDelta table into TransactionsImport that have a greater date & time than the current records in TransactionsImport table.
Problem is date & time are in separate columns:
Table structure:
Date Time ID
2011121305154107142201008300100
2011121305154122B1L13ZY0000A07YD
2011121304504735142201090002600
2011121304504737142201095008300
2011121304504737142201090002600
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Mar 10, 2014
I have a temperature table with a column that shows the how many hours old a newborn was when his/her temperature was taken.
Example lets say once per hour.
I want to join to a table called Weight that records the newborns weight at any given time.
Example lets say 3x during the day.
1 @ 8:45am
2 @ 11:15am
3 @ 4:30pm
I want to figure out which weight recording is the closest to a given temperature recording and return that one row.
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May 20, 2015
I have a simple table as shown:
I want to have values on the last column to represent the time interval between the 2 date columns (visits); i.e for event-ID 2 for example, I will have
entry(EventID = 2) - exit(EventID = 1), and so on
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May 15, 2008
Hi,
In my DB, many of my tables have a column named upsize_ts I have already been told that it is not linked in any way with the data in the DB. The data type of these columns is timestamp and every record in those colum is this : "<Binary>"
Now maybe it's because the whole DB comes from an export from an Access DB, or maybe not. I just had a few questions:
1/ Does anyone know why that column got generated and what it means? (optional)
2/Now the real question: is there any statement allowing me to "mass-drop" all those columns named "upsize_ts" in every table of my DB at the same time? Or at least any way not to do it one drop table at a time?
Thanks.
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Aug 30, 2006
HI!
as far as I know from docs and forum datareader is for .NET data in memory. So if a use a complex dataflow to build up some data and want to use this in other dataflow componens - could i use data datareader source in the fist dataflow and then use a datareader souce in the second dataflow do read the inmemoty data from fist transform to do fursther cals ?
how to pass in memory data from one dataflow to the next one (i do not want to rebuild the logic in each dataflow to build up data data ?
Is there a way to do this ? and is the datareader the proper component ? (because its the one and only inmemory i guess, utherwise i need to write to temp table and read from temp table in next step) (I have only found examples fro .NET VB or C# programms to read a datareader, but how to do this in SSIS directly in the next dataflow?
THANKS, HANNES
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Aug 7, 2007
Hi all,
I have created a report in SSRS 2005 which is being viewed by users from different Time Zones.
I have a dataset which has a field of type datetime (UTC). Now I would like to display this Date according to the User Time Zone.
For example if the date is August 07, 2007 10:00 AM UTC,
then I would like to display it as August 07, 2007 03:30 PM IST if the user Time Zone is IST.
Similarly for other Time Zones it should display the time accordingly.
Is this possible in SSRS 2005?
Any pointers will be usefull...
Thanks in advance
sudheer racha.
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Dec 13, 2007
Hello:
I am running into an issue with RS2k PDF export.
Case: Exporting Report to PDF/Printing/TIFF
Report: Contains 1 table with 19 Columns. 1 column is static, the other 18 are visible at the users descretion. Report when printed/exported to pdf spans 2 pages naturally, 16 on the first page, 3 on the second, and the column widths have been adjusted to provide a perfect page span .
User A elects to hide two of the columns, and show the rest. The report complies and the viewable version is perfect, the excel export is perfect.. the PDF export on the first page causes every fith column, starting with the last column that was hidden to be expanded to take up additional width. On the spanned page, it renders the first column on that page correctly, then there is a white space gap equal to the width of the hidden columns and then the rest of the cells show with the last column expanded to take up the same width that the original 2 columns were going to take up, plus its width.
We have tried several different settings to see if it helps this issue or makes it worse. So far cangrow/canshrink/keep together have made no impact. It is not possible to increase the page size due to limited page size selection availablility for the client. There are far too many combinations of what the user can elect to show or hide to put together different tables to show and hide on the same report to remove this effect.
Any help or suggestion on this issue would be appreciated
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Sep 24, 2007
Hi
I want to enter rows into a table having more number of columns
For example : I have one employee table having columns (name ,address,salary etc )
then, how can i enter 100 employees data at a time ?
Suppose i am having my data in .txt file (or ) in .xls
( SQL Server 2005)
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Jun 8, 2007
Hey guys, whats an easy way to pass a value into a stored procodure?
I tried the code below but I keep on getting a "Procedure 'sp_InsertData' expects parameter '@gpiBatchNo', which was not supplied." error. My stored proc basically gets inserts the passed variable into a databaseSqlConnection sqlSecConnection = new SqlConnection(sqlPriConnString);SqlCommand sqlSecCommand = new SqlCommand();
sqlSecCommand.Connection = sqlSecConnection;
sqlSecCommand.CommandText = "sp_InsertData";sqlSecCommand.CommandType = CommandType.StoredProcedure;sqlSecCommand.Parameters.Add("@gpiBatchNo", SqlDbType.NVarChar) ;
sqlSecConnection.Open();int returntype = sqlSecCommand.ExecuteNonQuery();
sqlSecConnection.Close();
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Oct 20, 2007
This code is currently loading my DataGridView
How can i change this to use the Datareader
Dim myConnection As SqlConnection = New SqlConnection("Data Source=ANTEC30SQLEXPRESS;Initial Catalog=test;Integrated Security=True;Pooling=False")
Dim myCmd As SqlCommand = myConnection.CreateCommand()
myConnection.Open()
myCmd.CommandType = Data.CommandType.Text
myCmd.CommandText = "Select * From tblParts"
Dim myDataAdapter As SqlDataAdapter = New SqlDataAdapter(myCmd)
Dim myDataSet As DataSet = New DataSet()
myDataAdapter.Fill(myDataSet)
DataGridView1.DataSource = myDataSet.Tables(0)
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Feb 22, 2007
Hi,
I am facing a problem to access datareader... actually i want to get data on lables from datareader. actually i am having one table having only one column and i hav accessed all data into datareader but the problem is that i just want to get data row by row...
For example there are four labels Label1, Label2, Label3, Label4
and want to print the data from datareader on to thease labels....
plz do reply... i am in trouble
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Feb 28, 2007
Hi, What is the difference b/w sqldatareader and sqldataadapter? For what purpose are they used in a database connection & how do they differ from each other? Pls explain me in detail.Regards Vijay.
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Jun 20, 2007
i need help to know what is the best practice
i have a stored proc which returns 4 different resultselts
will that be easy to use dataset or datareader?
my purpose of using dataset/datareader is to load the data in a class
thanks.
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Aug 20, 2007
Hi,
I cant seem to get this working right...I have a datareader which i loop through...i want to test each value to see if its null but i cant get the syntax right.
I know i use dr.item("columnname") or dr(0) to pick a certain column but i dont know the column names and want to check them all anyway. What is the syntax to do this.
Thanks for any help...this is prob very simple but just cant see it.
--------------------------------------------While dr.Read
If dr(0) Is System.DBNull.Value Then
Return "test"End If
End While
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Aug 25, 2007
Hello i creae one programm, there is an two data reader and two Gridview or datagrid , and my programm have one error my programm is there using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.Data.SqlClient;public partial class aries : System.Web.UI.Page{ SqlConnection con; SqlCommand cmd; SqlDataReader dr; SqlDataReader dr1; SqlCommand cmd1; protected void Page_Load(object sender, EventArgs e) { string str; str = ConfigurationSettings.AppSettings["DBconnect"]; con = new SqlConnection(str); con.Open(); cmd = new SqlCommand("select color from zodiac_color where Sno=1", con); dr = cmd.ExecuteReader(); GridView1.DataSource = dr; GridView1.DataBind(); cmd1=new SqlCommand("select number from zodiac_number where Sno=1",con); dr1 = cmd.ExecuteReader(); GridView2.DataSource = dr1; GridView2.DataBind(); }} i want to calll two value in a same database but the table is diffrent so please help me ?The error is ::--------- There is already an open DataReader associated with this Command which must be closed first. please help me ashwani kumar
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Apr 9, 2008
hi to all , check this once..this all data related to bus seats SeatNo1,SeatNo2 seats varchar in databaseSt1,St2 status(bit in database sqlserver2000) All my code is working when reader[i + 2].ToString() == "True" is remove from code ..so plz tell me solution gow to ckeck status with datareaderSqlCommand command = new SqlCommand("Select SeatNo1,SeatNo2,St1,St2 from tblSts where
BUSID='S0008'", sqlCon);
sqlCon.Open();
SqlDataReader
reader = command.ExecuteReader();
int x =
0;
while
(reader.Read())
{
for
(int i = 0; i <= reader.FieldCount - 1; i++)
{
x = (i + 1);
System.Web.UI.WebControls.Label myLabel = ((System.Web.UI.WebControls.Label)(Page.FindControl(("Label"
+ x))));
System.Web.UI.WebControls.CheckBox myCheckbox = ((System.Web.UI.WebControls.CheckBox)(Page.FindControl(("Checkbox"
+ x))));
if
(reader[i].ToString() != "NULL"
&& reader[i + 2].ToString() == "True"))
{
myLabel.Text =
reader[i].ToString();
myCheckbox.Checked = false;
}
else
{
myLabel.Text =
reader[i].ToString();
myCheckbox.Visible = false;
}
}
}
sqlCon.Close();
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Apr 25, 2008
Hi
In my web site I call all the content from the database with the use of querystrings. I use datareader to call the data each time a request appears from the querystring. Although I close all the connections I still get occasionally the following error:
Timeout expired the timeout period elapsed prior to obtaining a connection from the pool. This may have occured because all pooled connections were in use and max pool size was reached.
If it is not a programming error then what could it be? I use sql server 2005 and vs 2005 asp.net 2.0 .
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May 2, 2008
"There is already an open datareader associated with this command which must be closed first."
I have received this same error before, but I'm not sure why I'm getting it here.'Create a Connection object.
MyConnection = New SqlConnection("...............................")
'Check whether a TMPTABLE_QUERY stored procedure already exists.
MyCommand = New SqlCommand("...", MyConnection)
With MyCommand
'Set the command type that you will run.
.CommandType = CommandType.Text
'Open the connection.
.Connection.Open()
'Run the SQL statement, and then get the returned rows to the DataReader.
MyDataReader = .ExecuteReader()
'Try to create the stored procedure only if it does not exist.
If Not MyDataReader.Read() Then
.CommandText = "create procedure tmptable_query as select * from #temp_table"
MyDataReader.Close()
.ExecuteNonQuery()
Else
MyDataReader.Close()
End If
.Dispose() 'Dispose of the Command object.
MyConnection.Close() 'Close the connection.
End With
As you can see, the connection is opened and closed, and the datareader is closed. Here's what comes next...'Create another Connection object.
ESOConnection = New SqlConnection("...")
If tx_lastname.Text <> "" Then
If (InStr(sqlwhere, "where")) Then
sqlwhere = sqlwhere & " AND lname like '" & Replace(tx_lastname.Text, "'", "''") & "%'"
Else
sqlwhere = " where lname like '" & Replace(tx_lastname.Text, "'", "''") & "%'"
End If
End If
If tx_firstname.Text <> "" Then
If (InStr(sqlwhere, "where")) Then
sqlwhere = sqlwhere & " AND fname like '" & Replace(tx_firstname.Text, "'", "''") & "%'"
Else
sqlwhere = " where fname like '" & Replace(tx_firstname.Text, "'", "''") & "%'"
End If
End If
dynamic_con = sqlwhere & " order by arr_date desc "
'create the temporary table on esosql.
CreateCommand = New SqlCommand("CREATE TABLE #TEMP_TABLE (".............", ESOConnection)
With CreateCommand
'Set the command type that you will run.
.CommandType = CommandType.Text
'Open the connection to betaserv.
ESOConnection.Open()
'Run the SQL statement.
.ExecuteNonQuery()
End With
'query our side
ESOCommand = New SqlCommand("SELECT * FROM [arrest_index]" & dynamic_con, ESOConnection)
'execute query
ESODataReader = ESOCommand.ExecuteReader()
'loop through recordset and populate temp table
While ESODataReader.Read()
MyInsert = New SqlCommand("INSERT INTO #TEMP_TABLE VALUES("......", ESOConnection)
'Set the command type that you will run.
MyInsert.CommandType = CommandType.Text
'Run the SQL statement.
MyInsert.ExecuteNonQuery()
End While
ESODataReader.Close() 'Create a DataAdapter, and then provide the name of the stored procedure.
MyDataAdapter = New SqlDataAdapter("TMPTABLE_QUERY", ESOConnection)
'Set the command type as StoredProcedure.
MyDataAdapter.SelectCommand.CommandType = CommandType.StoredProcedure
'Create a new DataSet to hold the records and fill it with the rows returned from stored procedure.
DS = New DataSet()
MyDataAdapter.Fill(DS, "arrindex")
'Assign the recordset to the gridview and bind it.
If DS.Tables(0).Rows.Count > 0 Then
GridView1.DataSource = DS
GridView1.DataBind()
End If
'Dispose of the DataAdapter
MyDataAdapter.Dispose()
'Close server connection
ESOConnection.Close() Again, a separate connection is open and closed.I've read you can only have 1 datareader available per connection. Isn't that what I have here? The error is returned on this line: MyInsert.ExecuteNonQuery()
Help is appreciated.
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Nov 3, 2003
Hi
I am using a datareader to access data via a stored procedure. The reason for using the datareader is that the stored procedure is multi level depending on the variable sent to it. However I want to do two things with the data being returned.
The first is to poulate a datagrid - which I've done.
The second is to produce an Infragistic Web Graph. However according to the background reading I have done so far, I can only populate the graph from one of the following: datatable,dataview,dataset,Array or Ilist.
I don't want to make another call to the server for the same information, so how can I get the data out of a stored procedure into a dataset or dataview?
regards
Jim
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Jan 13, 2004
Why won't this dataReader read?
Dim objCon2 As New SqlConnection()
objCon2.ConnectionString = "a standard connection string"
objCon2.Open()
Dim objCommand As SqlCommand
objCommand = New SqlCommand(strSQL, objCon2)
Dim objReader As SqlDataReader
objReader = objCommand.ExecuteReader()
Label1.Text = objReader("email")
strSQL is a select command which I've checked (using SQL Query analyzer) does return data. I know the connection string is valid (and I presume if it wasn't that it'd fail on objCon2.open, which it doesn't).
So why oh why do I get this error on the last line (and yes, there is an "email" field in the contents of the reader)
System.InvalidOperationException: Invalid attempt to read when no data is present.
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