Odbc - Binding Sql Server Binary Field To A Wide Char Field Only Returns 1/2 The Daat
Jul 23, 2005
Hi ,
Have a Visual C++ app that use odbc to access sql server database.
Doing a select to get value of binary field and bind a char to that
field as follows , field in database in binary(16)
char lpResourceID[32+1];
rc = SQLBindCol(hstmt, 1, SQL_C_CHAR,&lpResourceID,
RESOURCE_ID_LEN_PLUS_NULL , &nLen1);
and this works fine , however trying to move codebase to UNICODE an
tested the following
WCHAR lpResourceID[32+1];
rc = SQLBindCol(hstmt, 1, SQL_W_CHAR,&lpResourceID,
RESOURCE_ID_LEN_PLUS_NULL , &nLen1);
but only returns 1/2 the data .
Any ideas , thoughts this would work fine , nit sure why loosing data
All ideas welcome.
JOhn
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Sep 27, 2005
Hi,
I need to convert a var char field to date field (DD/MM/YYYY)
Current convertion format:
CAST(Report_Date as DATETIME)
How can i convert to Date field with date format of DD/MM/YYYY?
Thanks.
Onn Onn
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Jun 1, 2008
Application is ocr'ing tiff image files and then storing the resultant text data in a text field in SQL 2005 database. This field is then used with the full text catalog.
All works fine,
However, am I using the correct field type to store the text files for efficiency and space saving?
If I use a binary field, does this reduce the size of the database by compressing the text data in the binary field? Also, is there a limit as to the size of text file that I could store in a binary field?
It would be good to get feedback on this before I go too far down the wrong road.
So, text field to store the text data or binary field to store the actual text file?
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Sep 19, 2005
Can anyone point me in the right direction to find documentation for the problem below?I need to store and retrieve ten fields of 16-bits each for testing 16 true-false conditions (a total of 160 bits in each record) so I think I'd like to use ten 2-byte binary fields (160 "bit" fields would be quite unmanageble, if even possible [I think there is some kind of limit to the number of fields in a single record]). I'm not quickly finding in the SQL Server's online documentation how to test for, use and update binary fields. I'll keep looking, but can anyone point me in the right direction? I'm using VB, if that makes any difference.
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Nov 7, 2007
This is an error that popped up with after setting option strict to on
option strict disallows late binding
The error is on the field in red
If customer_data_reader("CustID") = (customer_bindingsource.Current("CustID") Then
i was looking at this but i cannot find what type this is exactly
If CStr(customer_data_reader("CustID")) = Ctype(customer_bindingsource.Current("CustID"), ????????) Then
It is a field, but how would i set the type for this?
Or do i need to do something different?
Thanks
Jeff
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May 22, 2008
My task is to add income by taking few variables from webpage. I had take User ID(From database), Field value by selecting it from DropDownBox( Which value is once again taken from database), Income Description, Date, Amount . I had completed this task successfully by binding DropDownBox to database by query string and added income using stored procedure as below.
I need this to be done using only single Stored Procedure for binding Field Value to DropDownBox and for adding income. Plz tell me how to do this?
ASPX.CS file
protected void Page_Load(object sender, EventArgs e)
{
SqlConnection con = null;
con = DataBaseConnection.GetConnection();
DataSet ds = new DataSet();
SqlDataAdapter da = new SqlDataAdapter("select PA_IFName from PA_IncomeFields where PA_UID=@PA_UID", con);
da.SelectCommand.Parameters.Add("@PA_UID", SqlDbType.Int).Value = (int)Session["PA_UID"];
da.Fill(ds);
IFDdl.DataSource = ds;
IFDdl.DataTextField= ds.Tables[0].Columns[0].ToString();
IFDdl.DataValueField = ds.Tables[0].Columns[0].ToString();
IFDdl.DataBind();
}
protected void IncAddBtn_Click(object sender, EventArgs e)
{
SqlConnection con = null;
try
{
con = DataBaseConnection.GetConnection();
SqlCommand cmd = new SqlCommand("AddIncome", con);
cmd.CommandType = CommandType.StoredProcedure;
//SqlCommand cmd = new SqlCommand("",con);
//cmd.CommandText = "insert into PA_Income values(@PA_UID,@PA_IFName,@PA_IDesc,@PA_IDate,@PA_IAmt)";
cmd.Parameters.Add("PA_UID", SqlDbType.Int).Value = (int)Session["PA_UID"];
cmd.Parameters.Add("@PA_IFName", SqlDbType.VarChar, 10).Value = IFDdl.SelectedValue;
cmd.Parameters.Add("@PA_IDesc", SqlDbType.VarChar, 50).Value = IFDescTB.Text;
cmd.Parameters.Add("@PA_IDate", SqlDbType.DateTime).Value = Convert.ToDateTime(IFDateTB.Text);
cmd.Parameters.Add("@PA_IAmt", SqlDbType.Money).Value = Convert.ToDecimal(IFAmtTB.Text);
cmd.ExecuteNonQuery();
IFLabelMsg.Text = "Income Added Successfully!";
} // end of try
catch (Exception ex)
{
IFLabelMsg.Text = "Error : " + ex.Message;
}
finally
{
con.Close();
}
}
Stored Procedure
ALTER PROCEDURE dbo.AddIncome (@PA_UID int,@PA_IFName varchar(10),@PA_IDesc varchar(50),@PA_IDate datetime,@PA_IAmt money)
/*
(
@parameter1 int = 5,
@parameter2 datatype OUTPUT
)
*/
AS
/*SET NOCOUNT ON*/
insert into PA_Income values(@PA_UID,@PA_IFName,@PA_IDesc,@PA_IDate,@PA_IAmt)
ASPX File
<%@ Page Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true" CodeFile="AddIncome.aspx.cs" Inherits="AddIncome" Title="Untitled Page" %>
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<h2>
Add Income </h2>
<br />
<table>
<tr>
<td>
Select Income Field</td>
<td>
<asp:DropDownList ID="IFDdl" runat="server" Width="247px" >
</asp:DropDownList>
<a href="addincomefield.aspx">Add Income Field</a>
</td>
</tr>
<tr>
<td>
Enter Income Amount
</td>
<td>
<asp:TextBox ID="IFAmtTB" runat="server" Width="96px"></asp:TextBox>
Date <asp:TextBox ID="IFDateTB" runat="server" Width="93px"></asp:TextBox>(MM/DD/YY)</td>
</tr>
<tr>
<td>
Enter Income Description
</td>
<td>
<asp:TextBox ID="IFDescTB" runat="server" Width="239px"></asp:TextBox></td>
</tr>
</table>
<br />
<asp:Button ID="IncAddBtn" runat="server" Text="Add Income" OnClick="IncAddBtn_Click" /><br />
<br />
<asp:Label ID="IFLabelMsg" runat="server"></asp:Label>
</asp:Content>
I need this to be done using only single Stored Procedure for binding Field Value to DropDownBox and for adding income. Plz tell me how to do this?
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Oct 24, 2007
Hello,
I have a report which displays a customers invoice, in both the companys local currency, and the customers local currency.
The report language is "English (United Kingdom)"
The fields showing customers currency language setting is set to something else, i.e. "France (French)" to display the Euro currency.
The application handles 34 currencies, the query returns the language string, ("France (French)"), to allow the report to bind its language setting to the querys output.
However, it doesn't work, a normal textbox will display the correct country name string, but Reporting Services cannot bind the language setting to a query result. So I also tried setting it as a report parameter, but no joy either (all currencys revert to USD).
I'm using =First(Fields!curFormat.Value, "myDataSet") to bind the 'language' setting, the result of this expression returns "France (French)", which is a valid option for this language setting, as it's in the drop down list.
Rather than create 34 seperate reports for each currency, are there any suggestions on how to bind a fields language setting to a query result?
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Apr 6, 2006
Hi
I'm extracting a char(2) field from a table that has a value of '1' and writing it to another table but want the output field to be padded with a zero. I have tried this below:
right('00' + isnull(Field1, ' '),2
but the output field comes out as '1 ' (that's 1 followed by a space). Does anyone have any idea how I can do this or please point out what I'm doing wrong in my 'right(' fucntion above.
Thanks,
Jeff
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Oct 12, 1999
I have been asked to investigate the feasibility of converting an Invoice Number field from 6 to 7 digits, and allowing alpha characters. This means CHAR. The Invoice Number is not used outside of the application, but changes would have to be made to the database, and VB code that runs the app. Any ideas on how to proceed?
Any responses would be greatly appreciated!
Thanks
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Jul 12, 2007
ok, so we have a field in one of our db's, a do_not_synch field. this field has a datatype of char...
the following sql statement does not update the field..
update contacts
set do_not_synch = 'Y'
where id=1
and if i open up the table in sql server management studio, and cannot type in and save the value Y...yes i can update other fields in this row...so its not a permissions issue?
is there anything special i should have to do?
Cheers,
Justin
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Apr 25, 2008
Hi,
I have a varchar field that contains values to represent the month and year in the format mmyy (eg. 0107, 0207, 0307 etc).
I want to be able to select the value that is 6 months before the current month and year, for example if I were running the query in the current month/year (April 08) I would return the value 1007 (October 07).
Is someone able to help me with this please?
Thanks
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Dec 7, 1998
Hi,
If I want to make a field of characters to be unlimited length(or maybe 2k for example), what datatype should I use?
Char, varchar and text have a max. limit of 255...
Will appreciate any suggestions.
Thanks,
Nishi
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Jun 16, 2006
I need help on replace char in ntext data type
Here is the example data
<qMultipleChoice><qText>The%20AE%20understands%20what%20conditions%20the%2 0Account%20Manager%20is%20allowed%20to%20sign-off
20on.</qText><qChoice>Strongly20Disagree</qChoice><qChoice>Disagree
</qChoice><qChoice>Agree</qChoice><qChoice>Strongly%20Agree</qCh
I want result look like this
First Column:The AE Understands what conditions the Account Manager is allowed to sign-off.
Second Column: Strongly Disagree Disagree Agree Strongly Agree
This is what i had so far
Select (SUBSTRING(QuestionText, (PATINDEX(N'%<qText>%', QuestionText) + 7),(PATINDEX(N'%</qText>%', QuestionText) - (PATINDEX(N'%<qText>%', QuestionText) + 7)))) From tblQuestion
my result:
The%20AE%20understands%20what%20conditions%20the%2 0Account%20Manager%20is%20allowed%20to%20sign-off%20on.
I have problem with replace '%20' and how to make the second column.
Any Help?
Thanks
Shan
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Jul 12, 2006
Hi,
I have asked this question on 3 forums now and never get an answer, I don't know what is so hard about this question but I will try it here.
I am using SHA512 in C# to convert a password and its salt to hashed. I need to store the password hash and the salt hash in the database in two fields. I was told to use binary field to store the hash data and that the output of SHA512 would ALWAYS be the same no matter how long the password is.
I modified this hash example to use only SHA512 and to work with byte array instead of plain text.
All I need to know now is what size I need to make my binary field to hold this password that is hashed.
http://www.obviex.com/samples/Code.aspx?Source=HashCS&Title=Hashing%20Data&Lang=C%23
Say I have a password which is 30 characters max, and a salt which is 16 characters max. The password and the hash are stored in seperate fields in the same table. They are both hashed using SHA512 and are both being stored as byte arrays in C#, what size to I need to make the binary data type in order to hold the password, and to hold the salt.
Thanks!
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Nov 15, 2006
hi
I have used the following code (mostly created by MSDN) to retrive a binary field from SQL database. it works but I have extra space between characters. for example if I save a text file with "Hello world" text, after retriving I have it like "H e l l o w o r l d". what is the problem??????
I am really looking forward your answers
private void retrive()
{
public void a()
{
SqlConnection connection = new SqlConnection("Some Connection string");
SqlCommand command = new SqlCommand("Select * from temp", connection);
// Writes the BLOB to a file
FileStream stream;
// Streams the BLOB to the FileStream object.
BinaryWriter writer;
// Size of the BLOB buffer.
int bufferSize = 50;
// The BLOB byte[] buffer to be filled by GetBytes.
byte[] outByte = new byte[bufferSize];
// The bytes returned from GetBytes.
long retval;
// The starting position in the BLOB output.
long startIndex = 0;
// Open the connection and read data into the DataReader.
connection.Open();
SqlDataReader reader = command.ExecuteReader(CommandBehavior.SequentialAccess);
while (reader.Read())
{
// Create a file to hold the output.
stream = new FileStream(
"C:\file.txt", FileMode.OpenOrCreate, FileAccess.Write);
writer = new BinaryWriter(stream);
// Reset the starting byte for the new BLOB.
startIndex = 0;
// Read bytes into outByte[] and retain the number of bytes returned.
retval = reader.GetBytes(0, startIndex, outByte, 0, bufferSize);
// Continue while there are bytes beyond the size of the buffer.
while (retval == bufferSize)
{
writer.Write(outByte);
writer.Flush();
// Reposition start index to end of last buffer and fill buffer.
startIndex += bufferSize;
retval = reader.GetBytes(0, startIndex, outByte, 0, bufferSize);
}
// Write the remaining buffer.
if (retval != 0)
writer.Write(outByte, 0, (int)retval - 1);
writer.Flush();
// Close the output file.
writer.Close();
stream.Close();
}
// Close the reader and the connection.
reader.Close();
connection.Close();
}
}
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Apr 26, 2007
I want to have an SSIS package that processes a file in the normal insert, update style. But at the end I want to store the file as a binary field to another table for archive purposes. I am having trouble finding a good way to do this. Any samples, ideas, or articles would be appreciated.
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Apr 15, 2008
Hello,I have a stored procedure: -- Get an individual league match by IDALTER PROCEDURE [dbo].[mb_League_GetLeagueMatchByID]( @LeagueMatchID int)ASSET NOCOUNT ONSELECT * FROM mb_LeagueMatch WHERE mb_LeagueMatch.LeagueMatchID = @LeagueMatchIDThe mb_LeagueMatch table has a column named IsActive that is a bit datatype.The value for all rows is set to true (in database explorer in visual studio 2005).When I execute the above stored procedure I always get -1 (I'm guessing that means null) as a result for IsActive if it was true and 0 when false (as expected).However, when I run a query on the database for the same parameter, I get the expected 1 as the value for IsActive.Has anyone seen this before?Thanks,Howard
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Sep 7, 2000
I'm fairly new to SQL, so this might be simple question:
I am adding records to an SQL7 database by using the INSERT statement. The table has an IDENTITY field which is auto-incremented, so a value is not needed for the field in the query.
Is there any parameters for INSERT that returns to me the value of the IDENTITY field for the record I just created?...
Any help or suggestions would be appreciated.
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Nov 18, 2004
I have a SQL query that returns several fields from several tables, eg. Title, Subtitle, Author, Binding and Imprint. When these are returned everything seems rosy until there are two authors linked to one title. When this happens Title, Subtitle, Binding and Imprint are repeated which is not required. Is there a way to concatenate the authors from multple records to return a single title with the concatenated authors, instead of repeating titles due to multiple authors?.
Example:
A query may currently return:
Title1 - Subtitle1 - Author 1a - etc
Title1 - Subtitle1 - Author 1b - etc
Title1 - Subtitle1 - Author 1c - etc
Title2 - Subtitle2 - Author 2a - etc
Title3 - Subtitle3 - Author 3a - etc
When I would like
Title1 - Subtitle1 - Author 1a, Author 1b, Author 1c - etc
Title2 - Subtitle2 - Author 2a - etc
Title3 - Subtitle3 - Author 3a - etc
My actual SQL code, if you are interested, is:
SELECT dbo.edition.ISBN, dbo.edition.title, dbo.party.first_name+' '+dbo.party.surname as name, dbo.edition.reviews, dbo.edition.long_blurb, dbo.series.series_id, dbo.series.series_number,
dbo.series.series_title, dbo.edition.sub_title, dbo.edition.about_author, dbo.edition.short_blurb,
dbo.series.editors_affiliations, dbo.title.contents, dbo.title.affiliations, dbo.series.series_editors
FROM dbo.edition INNER JOIN
dbo.series ON dbo.edition.series_id = dbo.series.series_id INNER JOIN
dbo.title ON dbo.edition.title_id = dbo.title.title_id INNER JOIN
dbo.agreement ON dbo.edition.edition_id = dbo.agreement.edition_id INNER JOIN
dbo.role ON dbo.agreement.role_id = dbo.role.role_id INNER JOIN
dbo.party ON dbo.role.party_id = dbo.party.party_id
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Sep 4, 2007
Say I create a table that contains a nullable bit field as so:
CREATE TABLE FeatureCodes (FeatureCode int NOT NULL,FeatureName nvarchar(80),FeatureExtractorId int,FeatureValueType bit,ModTime datetime Default GETDATE())
I then insert a row as follows:
INSERT INTO FeatureCodes (FeatureCode,FeatureName,FeatureExtractorId,FeatureValueType) VALUES ('1','One','123','1')
Now if I look at the row via the query analyzer, I see the following:
1 One 123 True 2007-09-04 10:18:06
Now when I try to select the row via OLEDB, the FeatureValueType has a status of DBSTATUS_E_UNAVAILABLE.
MSDN's definition of the error is:
"The provider could not determine the value. For example, the row was just created, the default for the column was not available, and the consumer had not yet set a new value."
According to the above I shouldn't get the error considering I DID just set a new value. What's going on here?
Also, what's the "proper" method for inserting a bit value? I noticed 'True', 'TRUE', 'true', True, TRUE, and true do not execute.
Edit: If I use NULL instead of '1' in the insert statement, the selection works as expected returning DBSTATUS_S_ISNULL
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Aug 9, 2007
I have a table with several million rows of data. There is a date field defined as a char(8) with some bad rows. i tried to locate them with below
select date_stopped from patient_medication
where isdate(convert(datetime,date_stopped)) = 1
This won't work, I get the
Server: Msg 242, Level 16, State 3, Line 1
The conversion of a char data type to a datetime data type resulted in an out-of-range datetime value
Any way around this?
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Sep 3, 2007
Hello,
what's best for year resp. quarter Field, char(4) resp. char(1), integer or other?
Both are part of a composite index.
Thanks
Silas
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Nov 30, 2007
Can someone comment on why joining two tables on CHAR fields of different lengths would generate unexpected results?
I had an issue where I ran an update that used an inner join on two tables. The field I used in the join was char(50) in one table and char(13) in another table. The result gave bad matches. After changing the field types both to varchar(30), the problem was eliminate.
Any comments on this would be appreciated.
Rye Guy
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Sep 22, 2006
I am attempting to find quotes (") in a column and replace with the string '--THIS-WAS-QUOTES--'. Right now my script only converts the first quote it finds in the description column, converts to the string and moves to the next row leaving the other quotes as they were. Below is my query script
DECLARE @find varchar(8000),
@replace varchar(8000),
@patfind varchar(8000)
SELECT @find = '"',
@replace = '--THIS-WAS-QUOTES--'
SELECT @patfind = '%' + @find + '%'
UPDATE Incident
SET description = STUFF(convert( varchar(8000), description ),
PATINDEX( @patfind, description ),
DATALENGTH( @find ),
@replace )
WHERE description LIKE @patfind
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Sep 26, 2006
I am attempting to find quotes (") in a column and replace with the string '--THIS-WAS-QUOTES--'. Right now my script only converts the first quote it finds in the description column, converts to the string and moves to the next row leaving the other quotes as they were. Below is my query script
DECLARE @find varchar(8000),
@replace varchar(8000),
@patfind varchar(8000)
SELECT @find = '"',
@replace = '--THIS-WAS-QUOTES--'
SELECT @patfind = '%' + @find + '%'
UPDATE Incident
SET description = STUFF(convert( varchar(8000), description ),
PATINDEX( @patfind, description ),
DATALENGTH( @find ),
@replace )
WHERE description LIKE @patfind
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Nov 6, 2006
hello dear friends
I am trying to save a binary file to database with the following code:
public static void memorystreamToDb()
{
MemoryStream mst = new MemoryStream();
UnicodeEncoding u = new UnicodeEncoding();
string Textn = "Test";
byte[] b = u.GetBytes(Textn);
mst.Write(b ,0,Textn.Length );
BinaryReader reader = new BinaryReader(mst);
byte[] file = reader.ReadBytes((int)mst.Length);
using (SqlConnection connection = new SqlConnection("Some Connection String"))
{
SqlCommand command = new SqlCommand("INSERT INTO temp (examplefile) Values(@File)", connection);
command.Parameters.Add("@File", SqlDbType.Binary, file.Length).Value = file;
connection.Open();
command.ExecuteNonQuery();
}
reader.Close();
mst.Close();
}
or with the other method from a real file (not memory stream)
public static void Addfile(string path)
{
CommonMethods_class k = new CommonMethods_class();
byte[] file = GetFile(path);
using (SqlConnection connection = new SqlConnection(k.Get_connection_string()))
{
SqlCommand command = new SqlCommand("INSERT INTO temp (examplefile) Values(@File)", connection);
command.Parameters.Add("@File", SqlDbType.Binary, file.Length).Value = file;
connection.Open();
command.ExecuteNonQuery();
}
}
and after running each of them seams that the file have been saved; but I can not retrive the files. I have tried some solutions from msdn but inside the created file is empty. the point that i really look for it is to just working with memory not in the disk before saving. and then retriving each field that I want.
looking forward your points
thank you in advance
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Feb 16, 2004
i need to store a bmp or zipped file in a field of a ms sql db. i read the file using vb6 o.net, and in my mind i think sto store it in binary mode. the files could be more of 12 mega. whitch kind of field a could use?
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Jul 23, 2005
This may be a stupid question but I can't find an easy answer for what Iwant to do. I need a blob data field that can store both binary and textdata like the sql_variant field. I am using vb.net to populate a sql table.I want to store both string and binary data.
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Jul 23, 2005
Would it be OK to use varchar(5) instead of char(5) as the first field of acomposite clustered index?My gut tells me that varchar would be a bad idea, but I am not finding muchinformation on this topic on this when I Google it.Currently the field is Char(4), and there is a need to increase it to hold 5characters.TIA
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May 8, 2007
Hi all,
i have "String or binary data would be truncated" error when i try to execute an insert statment.
can i find witch field is affected by this error? (for return it to the user)
thank's all
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Jan 8, 2008
it's like this, i have a temporary table such as
create table temp_table (str varchar(50))
and i have a data table
create table data_table (str varchar(20))
now i import my data(in which there is some corrupted lines) into the temporary table, they should be all ansi-character strings and no more than 20 characters, but now some wrong datas in which there are wide-characters are mixed in. as the result of these wide-characters, the corrupted strings each takes over 20 bytes, but i can't filter them out, as when i enter in "len(str)", the sql server returns character counts, instead of byte counts, i thought this should only happen when i was using a unicode date type!(e.g. nvarchar). but now the server also behaves like this on those ansi date types. it seems all string manipulating functions refering string length behaves like this.
so when i am trying to run:
insert into data_table select str from temp_table where len(str) <= 20
or
insert into data_table select left(str,20) from temp_table
it will always end up with a string truncating error
String or binary data would be truncated. The statement has been terminated
So now my problem is how to get the count of byte, but character, of a string containing wide-characters?
i'm using sql server 2005 standard version with sp2
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Jun 9, 2015
Here is a CTE query
With mstrTable(ItemNo, Sales)
as (
Query1
Union All
Query2
)
Select Row_Number () Over(Partition by ItemNo order by ItemNo)as RowNo, ItemNo, Sales
From mstrTable
order by ItemNo
The results from Query1 and Query2 overlap sometimes.
The result set looks like:
1 Item1 10000
2 Item1 10000
1 Item2 20000
1 Item3 30000
I only want the first occurrence of each item. The desired result set is:
1 Item1 10000
1 Item2 20000
1 Item3 30000
I am not able to add a "Where RowNo = 1" to the query. SQL returns an "invalid field name".How would I obtain a record set that returns just the first occurrence of the ItemNo field?
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Nov 28, 2012
Is there a way to extract the date part (11/27/2012) of a datetime/time stamp column (11/27/2012 00:00:00.000) and keep it in a date format?
The code i have below extracts the date part of a timestamp column and converts it to a char field. This becomes a problem when I joing the resultant table with a SAS dataset which contains the same column but is in a date format. The join process generates an error saying the column is in different formats.
convert(char(15), process_date,112) as process_dt
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