SQL Server :: SQL Server Float Field To Data Table Double Field?
Nov 3, 2010
I have a SQL Server table with a number of fields that are defined with the "Float" data type. I'm running a simple query to retrieve the data from this table and use it to populate a Data Table in my C#.net application.
I just discovered that the data type of the Data Table fields is Double, not Float as I expected. As such, when I store a value like 0.157 it ends up getting stored like this: 0.15700000524520874
I'm aware that such extra "noise" occurs when such a conversion occurs. My major question has to do with why .Net didn't set the Data Type to Float (ie. Single) when the table was first populated?
using sql server 2005.I need to query some nchar fields to see if any of them contain string with double quotes (char(34)).whats the syntax to do this? I was thinking something like this but I think the first query would get exactly the text Char(34) when I only want to get the double quotes:SELECT fieldA FROM myTable where fieldA LIKE '%char(34)%'ORSELECT fieldA FROM myTable where fieldA LIKE '%'+char(34)+'%'
I have one asp.net application using Sql server as back end.. in sql server database i have one table which consist two fields.. ItemName and RateI have one notepad file which consist around 700 ItemName with Rate..
So how to get this ItemName and Rate in my Table...
I have a table named RECIPE which is linked to an other table name RECIPE_STATUS
In RECIPE table I have a field named Status_Id which contains the name of the Status which is fetch from the RECIPE_STATUS table based on this ID.
The RECIPE table sample information are as follow :
ID Name Status_Id ==================== 1 Test1 0 2 Test2 1 3 Test3 2
The RECIPE_STATUS entries are as follow:
ID Name ======== 0 Locked 1 Running 2 Free
From an ASP.net page I would like that my user is capable of changing the RECIPE_STATUS from a given recipe. For that I have a DataGrid which is bind to the RECIPE table.
But then what I would like is that the STATUS shown to my user to be the name Locked,Running or free depedning on the Id
How can I bound in my Datagrid the Recipe.Status to be bind to RECIPE_STATUS.Id ?
IN addition to that, If my user change the status for a given recipe, it should be properly save.
I need to write a query to populate a gridview with minimum rates in ascending order for a month from three tables.For example i have three tables A,B,C as follows
TABLE A TABLE B TABLE C Id id id Quote_no Quote_no Quote_ no Name Rate1 Equip_name Rate2 E_rate Date R1_rate R2_rate Date
Now if the data is as follows
I need to get the Name from Table A ,minimum Rate1 and Rate2 values for a month in a dropdownlist from date field from Table B and the corresponding minimum rate(E_rate) for Equipment E1 and E2 only from Table C for the month in ascending order group by Name.
TABLE A
id Quote_no Name 1 101 XYZ
2 102 ABC TABLE B id Quote_no Rate1 Rate2 Date
1 101 105 200 12/11/2010
2 102 90 210 15/11/2010
TABLE C id Quote_no Equip_name E_rate R1_rate R2_Rate Date
suppose i have few fileds in table and one filed is xml type. how to search this.
the xml which is stored in my xml filed like
<OpenShipments xmlns="x-schema:C:UPSLabelOpenShipments.xdr"> <OpenShipment ShipmentOption="RS" ProcessStatus=""> <ShipTo> [code]... we can query sql server data very easily but i dont know how to query the xml data which stored in xml filed.how to query address field in my xml or how to query Options field,how query CompanyOrName. please help me to construct the sql. guide me in detail with few sample for querying xml datatype.
1) login and send username,password, machineID and a rand string to the server 2) check the machineID whether it exists in the table.
Problem is the checking machine procedure:
select MachineID from computer where MD5MachineID=@MD5MachineID2 and SUBSTRING((master.dbo.fn_varbintohexstr(HASHBYTES('MD5',MachineID+@RString))),3,32)=@MIDST
RString,MD5MachineID2,MIDST are submited by Login MD5MachineID is stored in table.
I need the check if MD5(MachineID+RString) is match the MIDST (submited).
Now the situation is :
if RString is a fixed string(not a variable).like 'abcdefg', the MD5 is correct.
if I use the RString (submited value as a variable), the MD5 is incorrect.
I have a requirement to have a multiline textbox that accepts any text from any language and stores this into the database for later use. I am using Linq with ASP .NET 3.5 with a SQL Server 2005 database.
In of my application I am using the database to store and retrive images. The table stores the documents and the datatype of the field is IMage.
Now with Sql Server 2008, i would like to upgrade this to use this new feature. WHat changes do I have to make in terms of code and also in the database.
I imported an access database using the DTS wizard, into SQL 2005. There is a field in one of the Access tables that is a memo field, filled with a bunch of text including linebreaks.
After importing, the field is indicated as the nvarchar(MAX) datatype when I check in SQL Enterprise Manager.
The text in that field is displayed without line breaks, both in EM and when viewed on a web page.
I changed the datatype of that column to "text" and now can see line breaks when I hover over a value in that column while viewing the table data in Visual Studio 2010's Server Explorer.
But when I display the data in a ListView, there are no linebreaks. When I view my TableAdapter in my dataset, there are no linebreaks either.
I pulled a fast one today. I imported thousands of records and accidentally put the FName in the LName and the LName in the FName. I don't have a clue how to write a SQL or TSQL that will switch them. I do have a parameter for the SQL though. WHERE User - System Import.on ASP.NET because this is my place for help instead of going elsewhere to a more specific type of forum just for SQL. I do only ASP.NET VB/CS development so this is my home to find all my answers. (99% of the time).
I'm trying to delete some data in my database where no data is inside the field name and field id
select freelancer.id, freelancer.name FROM [bewerber].[dbo].[freelancer] WHERE freelancer.id = 'NUll' and freelancer.name = 'NUll' ORDER BY freelancer.vorname
I use a ntext data type for all kind of data save in one field, but when i save byte (that converted from image) follwing message is shown "Operand type clash: varbinary(max) is incompatible with ntext". Is ntext suitable for all kind of data type or what will be compatible for all data type support?
What function do I use to reduce all entries in a database field to a maximum length. The field is 100 characters wide and I need to chop all existing entries in the field down to 20 characters. I prefer not to redefine the field to 20 wide to lose the data and then redefine back to 100.
UPDATE CmpyInfo SET ( ShortName to 20 characters max ) WHERE ShortName.Length > 20
Trying to figure out how to handle data returned for a site search from a description field. I don't think I want to display all the text from the description field, but I also don't want to "chop" a word in half. How do I get the first 100 characters, plus a few extra letters if needed to prevent a word from being chopped in half. In some cases, the description field is less than 100 characters, so all the text will be displayed. However, if the description does need to be chopped at 100, I'd like to finish the word and add ... to indicate that there is more text.
I am trying to pass data from client to server using a hidden field. If I use a button, then OnClientClick sets the value, and OnClick does the postback and all is well.
However, I am responding to a Client event, and although this works I get no postback. How do I now force a postback from my client handler?
I have a datatable for which i'm defining a dataadapter. I'm specifying an updatecommand with sqlparameters for the dataadapter I set the updatecommand's parameters using the following overload:
[Code]....
The length 16 is used because this is the length of the field according to sql (the image datafield is a pointer of size 16) I noticed .Net is actually truncating the string because of the length i'm setting. An image of size 3kb will properly upload if we set the length field to be greater than 3kb The question I have is what is the proper value (or strategy) to use in order to set for the length field so that ALL images will properly update to the database, with each using the appropriate size.
I guess i could theoretically set the length to be maxint, but this seems sloppy. Looking at sqlparameter documentation i didnt see an 'unlimited' or 'default' length i could set, which would allow each update statement called to use the appropriate size for the data length for that row.
My filter Expression was working fine with filtering by Control Parameters.When I added the Phone Parameter it went nuts - with the Phone Parameter the GridView just Comes out blank upon loading the page (without it would show Select * from Individuals)Is it because the phone field is populated with numbers? Don't get it.... In the SQL server the 'phone' field is set to 'varchar(30)' and nulls are allowed.here is my code:
I am using a GridView Control to display multiple fileds with 0's and 1's.
I am using template fields where CheckBoxes are used.
Where exactly and how do I apply the Logic to get a checked CheckBox when field Value=1 and unchecked CheckBox when field Value=2 .Also some times to be able to write a YES where fieldValue=1 or NO where filedValue=0
