MS SQL Server :: NText Database Type

Urgent Need For Problem Of Increase In Database Size For Ntext Type Fields

Jan 22, 2006

I had several databases under sqlserver ce 2.0 (in my Pocket PC) which contained ntext fields. The size of the databases varies from 50,000 to 700,000 records. The size of an ntext field is from 4 bytes to 2 megabytes.

When I recreated my databases under sql server 2005 mobile on my desktop using VS2005 (see my post just under this one), I saw a big difference between the old and new database sizes. This problem was mentioned in one of the posts in this forum and the reply was to replace ntext data with ncharvar type.

Since most of my data was longer than 4000 bytes (which is the limit for nvarchar type), I couldn't use this suggestion. Instead, I changed my ntext type to image type and used a GetByte conversion.

No change! The size of the new database is still 50 % larger than the original. Since the difference is around 300 MB, this is an unacceptable thing.

Now, I either wait from somebody to suggest a new solution (apart from keeping the ntext data in a separate binary file and keep index of the records of this file in the records of sql database) or, most preferably, have

Microsoft solve this problem as soon as possible.

Thanks for any help in advance

Talat

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Convert Ntext Type To XML Type

Dec 6, 2007

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

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Ntext Type !!

Jun 1, 2004

Hi ...

I want define a ntext type variable and set the result of select from ntext field of table in that variable and Execute the variable .

Forexample :
Declare @A ntext
select @A=Fildntext from Table
set @A=@A+'string'
sp_executesql @A

Therefore how can i use ntext type??

thanks

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Ntext Data Type In SQL Server

Jun 14, 2006

Hi! ALL
I 'm writing an ASP.NET Application(1.1) , but i 've problem. I used ntext data type to store my data as follows
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but when display data, it displays as follows

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Xin c?m on! "

please, let me know the solution for this problem. Thanks,

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Feb 15, 2002

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Late
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Regards,
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my favorit hoster is ASPnix : www.aspnix.com !

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/* INFO USED HERE WAS TAKEN FROM http://support.microsoft.com/default.aspx?scid=kb;en-us;262499 */
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I hope this is the right forum for this question, my apologies in advance if it isn't....

We have a web based CGI product (written in C++ VS 6) that uses ODBC and takes text from a submitted web page and stores it in a SQL Server table in a field of type "ntext". The user in question is copying and pasting this text from an MS Word 2003 document. After the initial save our app errors out trying to access the table it just wrote to, and when we look in the table we see that up to **200 carriage returns** have been mysteriously inserted into the ntext field!! (Our product has been out in the field with no such problem for several years, so we are thinking it's related to something specific the customer is doing - perhaps with using MS Word for the source text.) We have tried but cannot duplicate the problem, but the customer sees it with each attempt to modify the table in question. The only thing that I see out of the ordinary is that the field in question is of type "ntext" - which supports unicode, instead of nvarchar. Does any of this ring a bell for anybody? I'm thinking of changing the field type to nvarchar to see if that solves the problem.
Thanks, Steve Bradbery

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AnalyteID int 4 10 0 (Primary Key)
AnalyteName nvarch 510
CasNumber nvarch 510
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1 Acetone 123-456-9 134.0 ug/L 1
2 Bezene 666-12-8 2.0 ug/L 1
3 Cobalt 421-008-7 10.0 ug/L 1
4 Acetone 123-456-9 201.0 ug/Kg 2
5 Bezene 666-12-8 1.0 ug/Kg 2
6 Cobalt 421-008-7 22.0 ug/Kg 2
7 Acetone 123-456-9 357.0 ug/L 3
8 Bezene 666-12-8 9.0 ug/L 3
9 Cobalt 421-008-7 56.0 ug/L 3

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USE ChemAveRpd

GO

SELECT *

FROM dbo.LabTests as LabResults

Where AnalyteName = Acetone

GO

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Msg 207, Level 16, State 1, Line 3

Invalid column name 'Acetone'.

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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.
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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.

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Apr 16, 2008

Hi,

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
��.

}
bulkCopy.DestinationTableName = "dbo.[Tbl_Fact_App_Server_AvailPerMinute]";
bulkCopy.WriteToServer(dt);

thx

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