Converting Data In Column To UCase - How?
Oct 5, 2005
I have a column in a table I want to convert all data to UCASE. Currently I have some that are lower case, some Uppercase, and some mixed. Considering there are over 700,000 records and these are just manufacturer names, I want to convert these to uppercase so all displayed information is consistent and I do not have to go through my scripts and convert to UCASE anywhere I pull a manufacturer name.
Is it possible to update a column data to UCASE? I understand how to do this via a row and with a condition, but an entire column has me confused.
Thanks for your help.
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Aug 31, 2006
I am using a stored procedure which returns a value of charecter datatype 'V' to the calling program.I am getting an sql exception System.Data.SqlClient.SqlException: Syntax error converting the varchar value 'V' to a column of data type inti didnot define any int datatype in my tablethis is my codeSqlCommand com = new SqlCommand("StoredProcedure4", connection);com.CommandType = CommandType.StoredProcedure; SqlParameter p1 = com.Parameters.Add("@uname", SqlDbType.NVarChar);SqlParameter p2 = com.Parameters.Add("@opwd", SqlDbType.NVarChar);SqlParameter p3 = com.Parameters.Add("@role", SqlDbType.NVarChar);p3.Direction = ParameterDirection.ReturnValue;p1.Value = username.Text.Trim();p2.Value = password.Text.Trim();com.ExecuteReader();lblerror2.Text = (string)(com.Parameters["@role"].Value); can your figure out what is the error ? Is it a coding error or error of the databse
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Jul 22, 2015
I have a sql table like this
event_id timestamp event_name event_score
1 3000 alarm 0.95
10 3500 alarm 0.85
5 4000 alarm 0.93
20 4200 alarm 0.87
30 5000 alarm 0.87
30 8000 alarm 0.97
40 9000 alarm 0.98
13 9700 alarm 0.98
And I am expecting output like this(With multiple rows)
event_id1 event_id2 event_id3 event_name event_score1 event_score2 event_score3
1 10 5 alarm 0.95 0.85 0.93
30 40 13 alarm 0.97 0.98 0.98
Also I have certain conditions like the timestamp difference between event_Id1 and event_Id3 < 3600 eg 1 hour
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Jan 23, 2007
Hi,
I have a webform with a drop-down listbox, binded to a table and a GridView, binded to another table. My goal is when I select a value (country in my case) in the drop-down listbox to change what is shown in the GridView, based on the ID that I get from the drop-down listbox.
Here is the code (the important parts...):
Select a Country : <asp:DropDownList ID="CountriesDropDownList" runat="server" DataSourceID="SqlDataSource2" DataTextField="Name" DataValueField="CountryID" Width="220px" AutoPostBack="True">
</asp:DropDownList>
<asp:SqlDataSource ID="SqlDataSource2" runat="server" ConnectionString="<%$ ConnectionStrings:MyConnectionString %>"
SelectCommand="SELECT [CountryID], [Name] FROM [DS_Country]">
</asp:SqlDataSource>
<asp:GridView ID="ProvincesGridView" runat="server" AllowPaging="True" AllowSorting="True" AutoGenerateColumns="False" DataKeyNames="ProvinceID,CountryID,Name,ShortName,Description" DataSourceID="SqlDataSource1" BackColor="White" BorderColor="#E7E7FF" BorderStyle="None" BorderWidth="1px" CellPadding="3" HorizontalAlign="Left" >
<Columns>
..............................
</Columns>
</asp:GridView>
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:DineSelectConnectionString %>"
DeleteCommand="DELETE FROM DS_Province WHERE ProvinceID=@ProvinceID"
SelectCommand="SELECT ProvinceID,CountryID,Name,ShortName,Description FROM DS_Province WHERE CountryID=@ddlCountryID"
UpdateCommand="UPDATE DS_Province SET CountryID=@CountryID,Name=@Name,ShortName=@ShortName,Description=@Description WHERE ProvinceID=@ddlCountryID"
InsertCommand="INSERT INTO DS_Province (CountryID,Name,ShortName,Description) VALUES (@CountryID,@Name,@ShortName,@Description)">
<SelectParameters>
<asp:ControlParameter Name="ddlCountryID" ControlID="CountriesDropDownList" PropertyName="DataValueField" />
</SelectParameters>
</asp:SqlDataSource>
When I run it I get this error "Syntax error converting the nvarchar value 'CountryID' to a column of data type int.". If I specify the Type="Int" in <asp:ControlParameter>..</> I get "Input string was not in a correct format. "
This is supposed to be easy, but I can't make it work ! Any suggestions will be more than welcome.
Thanks.
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Oct 14, 2005
Hi,
This is my complete trigger.
ALTER TRIGGER DeleteTriggerC_Middleware_Exception ON dbo.C_Middleware_Exception AFTER DELETE AS
BEGIN
DECLARE @RowCount AS VARCHAR
SET @RowCount = @@ROWCOUNT
DECLARE @TableName_Deleted AS VARCHAR(50)
DECLARE @ErrorMsg_Deleted AS VARCHAR(255)
DECLARE @AddlErrMsg_Deleted AS VARCHAR(255)
DECLARE @SubjectArea_Deleted AS VARCHAR(25)
DECLARE @CHKPT_Deleted AS VARCHAR(10)
SELECT @TableName_Deleted = table_name , @ErrorMsg_Deleted = cast(error_msg AS varchar(255)) , @AddlErrMsg_Deleted = cast(addl_error_msg AS varchar(255)),
@SubjectArea_Deleted = cast(SUBJECT_AREA AS varchar(25)), @CHKPT_Deleted = cast(CHKPT AS varchar(255))FROM DELETED
--where subject_area = 'inventory'
UPDATE dbo.Error_Log SET No_Of_Occurance = No_Of_Occurance + @RowCount WHERE Table_Name = @TableName_Deleted
IF @@ROWCOUNT = 0
BEGIN
UPDATE dbo.Error_Log SET No_Of_Occurance = No_Of_Occurance + @RowCount WHERE @ErrorMsg_Deleted like Error_Msg and Subject_Area IS NULL and ChkPoint IS NULL
END
IF @@ROWCOUNT = 0
BEGIN
UPDATE dbo.Error_Log SET No_Of_Occurance = No_Of_Occurance + @RowCount WHERE @AddlErrMsg_Deleted like Addl_Error_Msg
END
IF @@ROWCOUNT = 0
BEGIN
UPDATE dbo.Error_Log SET No_Of_Occurance = No_Of_Occurance + @RowCount WHERE @ErrorMsg_Deleted like Error_Msg and Subject_Area = @SubjectArea_Deleted and ChkPoint = @CHKPT_Deleted
END
END
when i am executing the follwing query i am gettin systax error.
Query :delete from dbo.c_middleware_exception where subject_area = 'eap_room'
Error :
Server: Msg 245, Level 16, State 1, Procedure DeleteTriggerC_Middleware_Exception, Line 17
Syntax error converting the varchar value '*' to a column of data type int.
what could be the solution.
Thanks in advance
yvnsmca
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Jul 20, 2005
I have an inventory database that Im trying to create a report out ofthe IP address are a lookup on a seperat table but I keep getting theabove error can I change the table row to something to fix this orwhat.SELECT i.INVENTORY_ITEM_ID AS [IP Address],i.HOST_NAME AS [ServerName], '' AS Flag, i.MEMO AS Comments, 'Seattle' AS City, 'Washington'AS State,CASE WHEN fv.value = 'EL EET1410' THEN '1111 3rdAve.' WHEN fv.value = 'EL WFL17' THEN '999 3rd Ave.' ELSE '' END AS[Address 1],' ' AS [Address 2], CASE WHEN fv.value = 'ELEET1410' THEN '1111' WHEN fv.value = 'EL WFL17' THEN '2222' ELSE ''END AS [Building ID],fv.VALUE AS Building, '98101' AS Zip,CASE WHEN fv.value = 'EL EET1410' THEN '14' WHENfv.value = 'EL WFL17' THEN '17' ELSE '' END AS [Computing FacilityLevel],CASE WHEN fv.value = 'EL EET1410' THEN '14' WHENfv.value = 'EL WFL17' THEN '17' ELSE '' END AS [Bldg Floor],CASE WHEN fv.value = 'EL EET1410' THEN 'C028'WHEN fv.value = 'EL WFL17' THEN 'C123' ELSE '' END AS WSPID,i.LOCATION_IN_FACILITY AS Location,i.SERIAL_NUMBER AS [Serial Number], i.ASSET_TAG AS [Asset Tag], ' ' AS[Second Asset Tag(s)],vv.VALUE AS Manufacture, mv.VALUE AS Model,'Yes' AS [Rack Mountable], rv.VALUE AS [Rack Units], 'DEV' AS [ServerEnviroment],lv.VALUE AS [Sever Type], ov.VALUE AS OS,CASE WHEN lv.value = 'Server - Intel Blade' THEN'Windows' WHEN lv.value = 'Server - Intel' THEN 'Windows' WHENlv.value = 'Server - Unix' THEN 'Unix'ELSE '' END AS [OS Type], '19x28' AS Footprint,ev.VALUE AS [Technical Owner of Server], 'N/A' AS [SLA Category],i.ON_BOARD_NIC_PORT_COUNT AS [NW Connectionquantity], 'Devlopment/Test Machine' AS [Application(s) Name],ev.VALUE AS [PW Contact],'N/A' AS RTO, 'N/A' AS RPO, 'No' AS [Is BoxClustered?], 'N/A' AS [Buisness Critical],CASE WHEN mv.value = 'Proliant DL580G1' THEN'90lbs' WHEN mv.value = 'Proliant DL360G2' THEN '85lbs' WHEN mv.value= 'Enterprise 220R' THEN'45lbs' ELSE '' END AS Weight,i.LAST_MODIFIED_DATE AS [Date of Last Install], 'No' AS [DedicatedCircuit]FROM dbo.INVENTORY_ITEM i LEFT OUTER JOINdbo.IP_TO_INVENTORY pv ON pv.IP_ADDRESS = i.INVENTORY_ITEM_IDLEFT OUTER JOINdbo.LOOKUP_VALUE lv ON lv.LOOKUP_VALUE_ID =i.DEVICE_TYPE_ID LEFT OUTER JOINdbo.LOOKUP_VALUE fv ON fv.LOOKUP_VALUE_ID =i.FACILITY_ID LEFT OUTER JOINdbo.LOOKUP_VALUE vv ON vv.LOOKUP_VALUE_ID =i.VENDOR_ID LEFT OUTER JOINdbo.LOOKUP_VALUE mv ON mv.LOOKUP_VALUE_ID =i.MODEL_ID LEFT OUTER JOINdbo.LOOKUP_VALUE ov ON ov.LOOKUP_VALUE_ID =i.SOFTWARE_VERSION_ID LEFT OUTER JOINdbo.LOOKUP_VALUE ev ON ev.LOOKUP_VALUE_ID =i.CHECKED_OUT_BY_ID LEFT OUTER JOINdbo.LOOKUP_VALUE rv ON rv.LOOKUP_VALUE_ID =i.U_HEIGHT_ID
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Aug 29, 2007
SQL server 2000
Note : GRP_ID integer
declare @SchDnGRP VARCHAR(50)
SET @SchDnGRP='29,30'
SELECT USR_ID_ARY from AD_USR_GRP Where GRP_ID in(@SchDnGRP)
i got error like
Syntax error converting the varchar value '29,30' to a column of data type int.
if need any sql server Configuration requie, please advice to me
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Feb 10, 2006
I have a table(tab1) with a column(col1) of type varchar. I insert a row with an integer value(1). And when i query the table using the sql, select col1 from tab1 where col1 = 1, it works fine.
But after i insert a varchar, say 'a' and then do the same query, i get an error message saying, "Syntax error converting the varchar value 'a' to a column of data type int.". Why is this so? Please reply.
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Nov 4, 2005
Well I am doing a simple insert through a stored procedure..., but I am getting this error. In my table I have the UserID as a VARCHAR 100. I am storing from a textbox that will have number because its there email. But I am not converting anything. Do I need to convert in this scenario??
Server Error in '/pickem' Application.
Syntax error converting the varchar value 'johndoe@hotmail.com' to a column of data type int. 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.Data.SqlClient.SqlException: Syntax error converting the varchar value 'johndoe@hotmail.com' to a column of data type int.Source Error:
Line 113:
Line 114: dbConnection.Open
Line 115: Dim Dr As System.Data.IDataReader = myCommand.ExecuteReader(System.Data.CommandBehavior.CloseConnection)
Line 116:
Line 117: Dim rowsAffected As Integer = 0
Here is the code: Dim dbConnection As System.Data.IDbConnection = New System.Data.SqlClient.SqlConnection(ConfigurationSettings.AppSettings("connString"))
Dim myCommand as New SqlCommand("prcAddTeam", dbConnection) myCommand.CommandType = CommandType.StoredProcedure
myCommand.Parameters.Add("@UserID", SqlDbType.Varchar, 100).Value = TRIM(emailBox.Text) myCommand.Parameters.Add("@TeamName", SqlDbType.Varchar, 40).Value = TRIM(teamBox.Text) myCommand.Parameters.Add("@Address1", SqlDbType.Varchar, 50).Value = TRIM(addressBox.Text) myCommand.Parameters.Add("@Address2", SqlDbType.Varchar, 50).Value = TRIM(address2Box.Text) myCommand.Parameters.Add("@City", SqlDbType.Varchar, 50).Value = TRIM(cityBox.Text) myCommand.Parameters.Add("@State", SqlDbType.Varchar, 30).Value = stateList1.SelectedItem.Value myCommand.Parameters.Add("@Zip", SqlDbType.Varchar, 11).Value = TRIM(zipBox.Text) myCommand.Parameters.Add("@FirstName", SqlDbType.Varchar, 50).Value = TRIM(firstNameBox.Text) myCommand.Parameters.Add("@LastName", SqlDbType.Varchar, 50).Value = TRIM(lastnameBox.Text)
dbConnection.Open Dim Dr As System.Data.IDataReader = myCommand.ExecuteReader(System.Data.CommandBehavior.CloseConnection)
Dim rowsAffected As Integer = 0
dbConnection.OpenStored procedure:CREATE PROCEDURE prcAddTeam @UserID VARCHAR(100) ,@TeamName VARCHAR(40) ,@Address1 VARCHAR(50) ,@Address2 VARCHAR(50) ,@City VARCHAR(50) ,@State VARCHAR(30) ,@Zip VARCHAR(11) ,@FirstName VARCHAR(50) ,@LastName VARCHAR(50) ASSET NOCOUNT ONDECLARE @ID INTSET @ID = 0SELECT @ID = ISNULL((SELECT UserID from tblUserInfo where UserID = @UserID),0)IF @ID = 0 BEGIN INSERT INTO tblUserInfo (UserID,TeamName,Address1,Address2,City,State,Zip,FirstName,LastName,CreateDate) VALUES(@UserID,@TeamName,@Address1,@Address2,@City,@State,@Zip,@FirstName,@LastName,GetDate()) SET @ID = @@IDENTITY END
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Aug 14, 2014
I'm moving data from one database to another (INSERT INTO ... SELECT ... FROM ....) and am encountering this error:
Msg 8114, Level 16, State 5, Line 6
Error converting data type varchar to numeric.
My problem is that Line 6 is:
set @brn_pk = '0D4BDE66347C440F'
so that is obviously not the problem and my query has almost 200 columns. I can go through one by one and compare what column is int in my destination table and what is varchar in my source tables, but that could take quite a while. How I can work out what column is causing the problem?
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Feb 15, 2005
an example will be appriciated!!!
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Feb 23, 2005
Please provide me with this queries solution
"select leadsource_id from Leadsource_Master where trim(ucase(leadsource_name))='" & Address_Module.name_check(Trim(UCase(cmbLeadSource ))) & "'"
It is a query in access, I want to use the same in SQL SERVER 2000 using VB 6.0
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Apr 20, 2007
Hi, all
I'm getting this error at runtime when my page tries to populate a datagrid. Here's the relevant code.
First, the user selects his choice from a dropdownlist, populated with a sqldatasource control on the aspx side:<asp:SqlDataSource ID="sqlDataSourceCompany" runat="server" ConnectionString="<%$ ConnectionStrings:ConnectionString %>"
SelectCommand="SELECT [PayrollCompanyID], [DisplayName] FROM [rsrc_PayrollCompany] ORDER BY [DisplayName]">
</asp:SqlDataSource>
And the dropdown list's code:<asp:DropDownList ID="ddlPayrollCompany" runat="server" AutoPostBack="True" DataSourceID="sqlDataSourcePayrollCompany"
DataTextField="DisplayName" DataValueField="PayrollCompanyID">
</asp:DropDownList>
Then, I use the selectedindexchanged event to bind the data to the datagrid. Here's that code:
1 Sub BindData()
2
3 Dim ds As New DataSet
4 Dim sda As SqlClient.SqlDataAdapter
5 Dim strSQL As String
6 Dim strCon As String
7
8 strSQL = "SELECT [SocialSecurityNumber], [Prefix], [FirstName], [LastName], [HireDate], [PayrollCostPercent], " & _
9 "[Phone], [BadgeNumber], [IsSupervisor], [SupervisorID], [IsUser], [IsScout] FROM [rsrc_Personnel] " & _
10 "WHERE ([PayrollCompanyID] = @PayrollCompanyID)"
11
12 strCon = "Data Source=DATASOURCE;Initial Catalog=DATABASE;User ID=USERID;Password=PASSWORD"
13
14 sda = New SqlClient.SqlDataAdapter(strSQL, strCon)
15
16 sda.SelectCommand.Parameters.Add(New SqlClient.SqlParameter("@PayrollCompanyID", Me.ddlPayrollCompany.SelectedItem.ToString()))
17
18 sda.Fill(ds, "rsrc_Personnel")
19
20 dgPersonnel.DataSource = ds.Tables("rsrc_Personnel")
21 dgPersonnel.DataBind()
22
23 End Sub
24
I'm assuming my problem lies in line 16 of the above code. I've tried SelectedItemIndex, SelectedItemValue too and get errors for those, as well.
What am I missing?
Thanks for anyone's help!
Cappela07
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Jul 21, 2000
I've got have a populated table and I want to convert a datetime column so it lists the date only (without the time component)
I tried to run this as a script, but returns an error:
update <table>
where <column>=convert(datetime,convert(char10),<column>,101))
When I run only this part, it does strip the date of the time component but it becomes a string, and I need this field stored as a datetime field:
convert(char(10),hire_date,101)
I'd appreciate any suggestions :)
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Aug 5, 2004
I have a column that is frequently updated with an append query. I need to turn all of the incoming positive values into negative values (as well as convert all of the existing). I tried to multiply the column by -1 in the formula option in table design view but couldn't find the proper formula format.
Can anyone suggest an approach.
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Apr 8, 2008
Hi everybody,
I have this situation here:
I have a table structure something like :
id name keywords
100
60 tabs
Action Labs
100
60 tabs
Actionlabs
100
60 tabs
Actions Labs
100
60 tabs
Super Glucosamine
100
60 tabs
Super Glucosamine And Chondroitin
100
60 tabs
Super Glucosamine Plus Chondroitin
100
60 tabs
Super Glucosamine Plus Chondroitin Sulfate
101
60 caps
Action Labs
101
60 caps
Actionlabs
101
60 caps
Actions Labs
101
60 caps
Super Glucosamine
101
60 caps
Super Glucosamine And Chondroitin
101
60 caps
Super Glucosamine Plus Chondroitin
101
60 caps
Super Glucosamine Plus Chondroitin Sulfate
How can I bring all the values under 'keywords' as comma seperated under one column identified by their ids?
eg:
id name keywords
100 60 tabs Action Labs,Actionlabs,Actions Labs,Super Glucosamine,Super Glucosamine And Chondroitin etc.
Please help me!!!
Thanks in advance,
Tanya
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Jan 24, 2002
Hello everyone, I have searched and seached for an answer to something that I know has to be simple but have been unsuccessful. I appreciate any help...
I am trying to take a char (6) column named col001 and convert it to datetime.
The column is in mmddyy format. I am using SQL 2000, but have available sql 7.0 servers if there is a difference. I expect that I have to write a cursor but have been unable to get the correct syntax. Thanks everyone
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Apr 18, 2014
It is possible to covert rows into column by using tsql script, see attached file for more details...
CREATE TABLE Table1 (SalesOrder varchar(10), ItemName VARCHAR(100), Price INT, ItemNo int)
GO
INSERT INTO Table1
SELECT '01', 'Camera', 100, 1
UNION ALL
SELECT '01', 'Memory 4GB', 10, 2
[code]....
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Apr 15, 2015
I have a columns with datatype varchar(50) which has date values in it.
I am trying to convert the values in the column to a date value,but i am getting conversion error.
Msg 241, Level 16, State 1, Line 1
Conversion failed when converting date and/or time from character string.
select last_update from importtest where convert(datetime,last_update)<convert(datetime,'24 Dec 2014')
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Aug 21, 2007
I have a data field that's datatype int and I need to convert it to smalldatetime, however, I get one row erroring out due to a typo in the data that has a date of 21190101. What's wrong with my case statement to set that one typo to 20790101?
'SD' = Case When pro_date > 20790000 Then
pro_date = '20790101'
Else CAST(CAST(pro_date AS VARCHAR) AS SMALLDATETIME) End,
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Jan 13, 2006
I'm having trouble converting a date in the format of:
Jan 11 2006 12:00:00:000AM
to a smalldatetime in my new SSIS package. I'm trying the derived column transformation, but I'm at a wall now, especially with the conversion of 'Jan' string to integer/month/value of 1. Anyone have experience/advice on this transformation?
What happened to the DateTime String transformation in SQL 2000? Was that too unpopular to move to integration services? That transformation saved my butt many times - every banks' data feed we import uses a different date format.
Thanks in advance for any advice/help!
-Erik
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Jun 14, 2015
I have a column in a sql Table with a datatype nvarchar 255 and the value in the column is 07MAR2012:00:00:00.000. I want to convert into a datetime.
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Jul 24, 2015
When I execute the below stored procedure I get the error that "Arithmetic overflow error converting expression to data type int".
USE [FileSharing]
GO
/****** Object: StoredProcedure [dbo].[xlaAFSsp_reports] Script Date: 24.07.2015 17:04:10 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
[Code] .....
Msg 8115, Level 16, State 2, Procedure xlaAFSsp_reports, Line 25
Arithmetic overflow error converting expression to data type int.
The statement has been terminated.
(1 row(s) affected)
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Aug 31, 2004
Hi There,
I'm using C# to get a value for a DOUBLE precision variable, called "Length", from a textBox using the following line:
Length = Convert.ToDouble( txtLength.Text )
I'm also using the following lines to prepare my stored procedure call:
arParms[9] = new SqlParameter("@Length", SqlDbType.Decimal, 5);
arParms[9].Value = record.Length;
My stored procedure has the following parameter definition:
@Length decimal(9,3)
My problem is that if someone types a value bigger than 999999 in the textbox he will get for sure the following error:
System.Data.SqlClient.SqlException: Error converting data type numeric to decimal.
I don't know how to either make sql or C# to truncate the value or catch the exception to automatically assign 0 to the parameter.
Please Help.
Moshe
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Aug 31, 2007
Hi,
Can anyone please help me with the syntax for this query please. Error is "syntax error converting varchar value '/' to a column of datatype int"
Query:
Code:
select iCalls_Calls.Call_ID,iCalls_Calls.Requestor,Type,Scope,iCalls_Calls.Status_ID,iCalls_Status.Status_I D,
iCalls_Status.Status_Label,((select Count(*) from iCalls_Events where Call_ID = " & Session("Call_ID") & " ) + ' /' + (
select Count(*) from iCalls_Events where Call_ID = "& Session("Call_ID") & " and Events_Flag <> 0)) as Countrec from
((iCalls_Calls inner join iCalls_Status on iCalls_Calls.Status_ID=iCalls_Status.Status_ID ) inner join iCalls_Users on
iCalls_Calls.Requestor=iCalls_Users.User_ID) left outer join iCalls_Messages on iCalls_Calls.Call_ID=iCalls_Messages.Call_ID where Requestor='" & Session("User_ID") & "' AND iCalls_Calls.Status_ID <> 6 order by iCalls_Calls.Call_ID
Thanks...
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Mar 10, 2015
I have a computed column that I want to cast as decimal.
The two columns it calculates from are both varchar.
Why can I cast the column as INT, but when I try to cast as decimal, I get the following error?
Arithmetic overflow error converting varchar to data type numeric.
what this error means and why I get it only when I want to cast to decimal.
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Feb 28, 2008
Hi there,
I am looking for a way to define a trigger that is a replacement for a multi-column foreign key.
I know how to a convert a single-column foreign key constraint into a trigger (i.e., to resolve diamond-structured references).
CREATE TABLE parent_tab
(
col_a INTEGER NOT NULL,
CONSTRAINT pk PRIMARY KEY(col_a)
);
CREATE TABLE child_tab
(
col_x INTEGER NOT NULL,
CONSTRAINT fk FOREIGN KEY (col_x) REFERENCES parent_tab(col_a) ON DELETE CASCADE
);
The conversion would remove the foreign key definition and add this trigger:
CREATE TRIGGER tr_single
ON parent_tab INSTEAD OF DELETE
AS BEGIN
DELETE FROM child_tab WHERE (child_tab.col_x IN (SELECT col_a FROM deleted))
DELETE FROM parent_tab WHERE (parent_tab.col_a IN (SELECT col_a FROM deleted))
END;
Unfortunately, now I need to resolve a situation where there is involved a multi-column foreign key.
CREATE TABLE parent_tab
(
col_a INTEGER NOT NULL,
col_b INTEGER NOT NULL,
CONSTRAINT pk PRIMARY KEY(col_a, col_b)
);
CREATE TABLE child_tab
(
col_x INTEGER NOT NULL,
col_y INTEGER NOT NULL,
CONSTRAINT fk FOREIGN KEY (col_x, col_y) REFERENCES parent_tab(col_a, col_b) ON DELETE CASCADE
);
This does not work, because the temporary table "deleted" might contain more than one row. How do I make sure that the values belong to the same row?
-- incorrect trigger, might delete too many rows
CREATE TRIGGER tr_single
ON parent_tab INSTEAD OF DELETE
AS BEGIN
DELETE FROM child_tab WHERE (child_tab.col_x IN (SELECT col_a FROM deleted) AND child_tab.col_y IN (SELECT col_b FROM deleted))
DELETE FROM parent_tab WHERE (parent_tab.col_a IN (SELECT col_a FROM deleted) AND parent_tab.col_b IN (SELECT col_b FROM deleted))
END;
-- some magic needed :-)
CREATE TRIGGER tr_single
ON parent_tab INSTEAD OF DELETE
AS BEGIN
DELETE FROM child_tab WHERE (child_tab.col_x IN (SELECT col_a FROM deleted AS t1) AND child_tab.col_y IN (SELECT col_b FROM deleted AS t2) AND row_id(t1) = row_id(t2))
DELETE FROM parent_tab WHERE (parent_tab.col_a IN (SELECT col_a FROM deleted AS t1) AND parent_tab.col_b IN (SELECT col_b FROM deleted AS t2) AND row_id(t1) = row_id(t2))
END;
I know the trigger definition above is ***... but I hope that it helps to make clear what I need.
Btw., I use SQL Server 2005.
Thanks in advance,
slowjoe
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Aug 19, 2015
I am trying to convert a column (nvarchar) to date time.
Here is an example of some values:
20110905
20110901
20111003
As expected, I received the following error: 'Conversion failed when converting date and/or time from character string.'
However, I am unsure how I should approach updating the whole column. I would like the format to be '103'.
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Nov 6, 2007
All,
I've converted datatypes in the past to something more appropriate in order to save space, and speed up the database, to great success. I'm in the middle of another such change, this one table in particular I am converting from [text] columns to varchar(max)'s, and varchar(1)'s to char(1)'s. I've made a duplicate of the table in question (which has about 25 text columns, and 20 varchar(1) columns), ported over the data, and ran 'sp_spaceused' and got the following results:
-- new table
name | rows | reserved | data | index_size | unused
Response | 39920 | 15384 KB | 15168 KB | 208 KB | 8 KB
-- old table
name | rows | reserved | data | index_size | unused
Response | 39920 | 124128 KB | 123696 KB | 200 KB | 232 KB
I didn't expect results quite this dramatic. Now to my question: Did I miss something measuring the difference? Is there something else, another method I should employ to determine the size differentials?
If this is right, it's outstanding, just unexpected. I would have been happy losing 10 or 20 MB.
I appreciate any insight anyone might be able to provide.
Best,
B.
Just fyi - here are the table schemas:
-- old table
CREATE TABLE [dbo].[Response](
[ResponseID] [varchar](30) NOT NULL,
[Term] [varchar](5) NOT NULL,
[Subject] [varchar](4) NOT NULL,
[Course] [varchar](4) NOT NULL,
[Sect] [varchar](3) NOT NULL,
[MidEndFlag] [varchar](3) NOT NULL,
[SID] [varchar](9) NOT NULL,
[TemplateID] [varchar](30) NOT NULL,
[LastModified] [datetime] NULL,
[College] [varchar](30) NULL,
[Classification] [varchar](10) NULL,
[CourseRequired] [varchar](3) NULL,
[ExpectedGrade] [varchar](10) NULL,
[Sex] [varchar](6) NULL,
[ItemAnswer1] [varchar](1) NULL,
[ItemComments1] [text] NULL,
[ItemAnswer2] [varchar](1) NULL,
[ItemComments2] [text] NULL,
[ItemAnswer3] [varchar](1) NULL,
[ItemComments3] [text] NULL,
[ItemAnswer4] [varchar](1) NULL,
[ItemComments4] [text] NULL,
[ItemAnswer5] [varchar](1) NULL,
[ItemComments5] [text] NULL,
[ItemAnswer6] [varchar](1) NULL,
[ItemComments6] [text] NULL,
[ItemAnswer7] [varchar](1) NULL,
[ItemComments7] [text] NULL,
[ItemAnswer8] [varchar](1) NULL,
[ItemComments8] [text] NULL,
[ItemAnswer9] [varchar](1) NULL,
[ItemComments9] [text] NULL,
[ItemAnswer10] [varchar](1) NULL,
[ItemComments10] [text] NULL,
[ItemAnswer11] [varchar](1) NULL,
[ItemComments11] [text] NULL,
[ItemAnswer12] [varchar](1) NULL,
[ItemComments12] [text] NULL,
[ItemAnswer13] [varchar](1) NULL,
[ItemComments13] [text] NULL,
[ItemAnswer14] [varchar](1) NULL,
[ItemComments14] [text] NULL,
[ItemAnswer15] [varchar](1) NULL,
[ItemComments15] [text] NULL,
[ItemAnswer16] [varchar](1) NULL,
[ItemComments16] [text] NULL,
[ItemAnswer17] [varchar](1) NULL,
[ItemComments17] [text] NULL,
[ItemAnswer18] [varchar](1) NULL,
[ItemComments18] [text] NULL,
[ItemAnswer19] [varchar](1) NULL,
[ItemComments19] [text] NULL,
[ItemAnswer20] [varchar](1) NULL,
[ItemComments20] [text] NULL,
[EssayQuestionAnswer1] [text] NULL,
[EssayQuestionAnswer2] [text] NULL,
[EssayQuestionAnswer3] [text] NULL,
[EssayQuestionAnswer4] [text] NULL,
[EssayQuestionAnswer5] [text] NULL,
CONSTRAINT [PK_Response] PRIMARY KEY CLUSTERED
(
[SID] ASC,
[TemplateID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]
-- new table
CREATE TABLE [Test].[Response](
[ResponseID] [varchar](30) NOT NULL,
[Term] [varchar](5) NOT NULL,
[Subject] [varchar](4) NOT NULL,
[Course] [varchar](4) NOT NULL,
[Sect] [varchar](3) NOT NULL,
[MidEndFlag] [varchar](3) NOT NULL,
[SID] [varchar](9) NOT NULL,
[TemplateID] [varchar](30) NOT NULL,
[LastModified] [datetime] NULL,
[College] [varchar](30) NULL,
[Classification] [varchar](10) NULL,
[CourseRequired] [varchar](3) NULL,
[ExpectedGrade] [varchar](10) NULL,
[Sex] [varchar](6) NULL,
[ItemAnswer1] [char](1) NULL,
[ItemComments1] [varchar](max) NULL,
[ItemAnswer2] [char](1) NULL,
[ItemComments2] [varchar](max) NULL,
[ItemAnswer3] [char](1) NULL,
[ItemComments3] [varchar](max) NULL,
[ItemAnswer4] [char](1) NULL,
[ItemComments4] [varchar](max) NULL,
[ItemAnswer5] [char](1) NULL,
[ItemComments5] [varchar](max) NULL,
[ItemAnswer6] [char](1) NULL,
[ItemComments6] [varchar](max) NULL,
[ItemAnswer7] [char](1) NULL,
[ItemComments7] [varchar](max) NULL,
[ItemAnswer8] [char](1) NULL,
[ItemComments8] [varchar](max) NULL,
[ItemAnswer9] [char](1) NULL,
[ItemComments9] [varchar](max) NULL,
[ItemAnswer10] [char](1) NULL,
[ItemComments10] [varchar](max) NULL,
[ItemAnswer11] [char](1) NULL,
[ItemComments11] [varchar](max) NULL,
[ItemAnswer12] [char](1) NULL,
[ItemComments12] [varchar](max) NULL,
[ItemAnswer13] [char](1) NULL,
[ItemComments13] [varchar](max) NULL,
[ItemAnswer14] [char](1) NULL,
[ItemComments14] [varchar](max) NULL,
[ItemAnswer15] [char](1) NULL,
[ItemComments15] [varchar](max) NULL,
[ItemAnswer16] [char](1) NULL,
[ItemComments16] [varchar](max) NULL,
[ItemAnswer17] [char](1) NULL,
[ItemComments17] [varchar](max) NULL,
[ItemAnswer18] [char](1) NULL,
[ItemComments18] [varchar](max) NULL,
[ItemAnswer19] [char](1) NULL,
[ItemComments19] [varchar](max) NULL,
[ItemAnswer20] [char](1) NULL,
[ItemComments20] [varchar](max) NULL,
[EssayQuestionAnswer1] [varchar](max) NULL,
[EssayQuestionAnswer2] [varchar](max) NULL,
[EssayQuestionAnswer3] [varchar](max) NULL,
[EssayQuestionAnswer4] [varchar](max) NULL,
[EssayQuestionAnswer5] [varchar](max) NULL,
CONSTRAINT [PK_Test_Response] PRIMARY KEY CLUSTERED
(
[SID] ASC,
[TemplateID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
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