How To Check For NULL Values In T-SQL
Jan 19, 2007How can I check on NULL values in a Select statement?
SELECT ID
FROM Tabel
WHERE somecolumn <> NULL??
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Check For Null Values In Transact Sql
Aug 20, 2006I am using Visual Web Developer Express 2005 and SQL Server Express 2005.
I have set up a trigger that fires when an update has been performed on a specific table. The trigger checks to see if specific columns have been updated. If they have, then the trigger code is executed. This part works fine.
I am now trying to find a way to check if null values exist in either one of two field from the same table. If either field contains a null value, then I don't want the trigger code to be executed.
How can I check for null values and skip a block of code within my Transact Sql trigger.
Thanks.....
Check For Null Or Empty Values And Return 0
Mar 13, 2014I am using the below query to calculate column values. But I need to return zero when a column values is empty or null.
select [Funding] [Fundings],
[Original] AS [Originals],
[Variance] = SUM([Previous_Year]-[Current_Year]),
[SumValue] = SUM([CurrentYear]/4),
[ActualValue] = SUM([Variance] * 0.75),
[FinanceYear],
[New Value] = SUM([Previous_Year]+[Current_Year])
from Finance
GROUP BY [Original], [FinanceYear]
Sum Column Values And Also Check Null Condition
Mar 28, 2014select '$ '+ CONVERT(varchar,CONVERT(decimal(10,0),CONVERT(money, Amt_Value)),1) as [Amount]
from Products
How can I sum this column values and need to set a validation like the column has null values it has to return zero.
Compressing Multiple Rows With Null Values To One Row With Out Null Values After A Pivot Transform
Jan 25, 2008I have a pivot transform that pivots a batch type. After the pivot, each batch type has its own row with null values for the other batch types that were pivoted. I want to group two fields and max() the remaining batch types so that the multiple rows are displayed on one row. I tried using the aggregate transform, but since the batch type field is a string, the max() function fails in the package. Is there another transform or can I use the aggragate transform another way so that the max() will work on a string?
-- Ryan
Reporting Services :: Give Meaning Full Name To Allow Null Value Check Box In Report Parameter Instead Of NULL?
Oct 20, 2015In my report i have CNAME parameter , which allows null value. I checked Allow null value check box in report parameter properties.
when i preview the report , it displays checked NULL check box beside CNAME parameter . I want to give some meaningful name(i.e.ALLCustomers) to this checkbox instead of NULL.
Is it possible through SSRS designer?
Lookup To Check Values In 13 Columns With Same Values
Mar 22, 2006hi,
it is my first post on this forum, please be patient if i miss any important bit of information.
i am transporting data from a legacy system into mssql 2k5 using SSIS.
among those column of a dataset there are 13 columns, all necessary for operational reasons, that i need to ensure data consistance.
i believe i could do this check using the lookup data flow item, but surely there must be a way to do it in a more streamlined fashion.
since column names contain numbers to distinguish the version, eg; col01, col02, col03 .. col13.
i thought i could include the lookup within a loop and use a couple of variables to do this trick, but since i have not done it before i am asking for some sort of guidance from a guru among you folks.
please let me know if further clarification is necessary.
regards,
nicolas
NULL Values Returned When Reading Values From A Text File Using Data Reader.
Feb 23, 2007I have a DTSX package which reads values from a fixed-length text file using a data reader and writes some of the column values from the file to an Oracle table. We have used this DTSX several times without incident but recently the process started inserting NULL values for some of the columns when there was a valid value in the source file. If we extract some of the rows from the source file into a smaller file (i.e 10 rows which incorrectly returned NULLs) and run them through the same package they write the correct values to the table, but running the complete file again results in the NULL values error. As well, if we rerun the same file multiple times the incidence of NULL values varies slightly and does not always seem to impact the same rows. I tried outputting data to a log file to see if I can determine what happens and no error messages are returned but it seems to be the case that the NULL values occur after pulling in the data via a Data Reader. Has anyone seen anything like this before or does anyone have a suggestion on how to try and get some additional debugging information around this error?
View 12 Replies View RelatedIntegration Services :: SSIS Reads Nvarchar Values As Null When Excel Column Includes Decimal And String Values
Dec 9, 2013I have SQL Server 2012 SSIS. I have Excel source and OLE DB Destination.I have problem with importing CustomerSales column.CustomerSales values like 1000.00,2000.10,3000.30,NotAvailable.So I have decimal values and nvarchar mixed in on Excel column. This is requirement for solution.However SSIS reads only numeric values correctly and nvarchar values are set as Null. Why?
CREATE TABLE [dbo].[Import_CustomerSales](
[CustomerId] [nvarchar](50) NULL,
[CustomeName] [nvarchar](50) NULL,
[CustomerSales] [nvarchar](50) NULL
) ON [PRIMARY]
Null Values For Datetime Values Converted To '0001-01-01'
Mar 29, 2006Hi
can somebody explain me how I can assign a NULL value to a datetime type field in the script transformation editor in a data flow task.
In the script hereunder, Row.Datum1_IsNull is true, but still Row.OutputDatum1 will be assigned a value '0001-01-01' which generates an error (not a valid datetime). All alternatives known to me (CDate("") or Convert.ToDateTime("") or Convert.ToDateTime(System.DBNull.Value)) were not successful.
Leaving out the ELSE clause generates following error: Error: Year, Month, and Day parameters describe an un-representable DateTime.
If Not Row.Datum1_IsNull Then
Row.OutputDatum1 = Row.Datum1
Else
Row.OutputDatum1 = CDate(System.Convert.DBNull)
End If
Any help welcome.
How To Check Value Is Null Or Not
Apr 17, 2008Hi
I have two tables. one MasterDetail and second is countrydetail
In master detail i have MasterDetailId (Primary) and countryId.
In CountryDetail table I have Countrid (Primary),CountryName.
I don't want to give relationship because i can insert null value in countryid in MasterDetail table.
So i have wriiten query like this
-> select c.CountryName,m.MasterDetailId from MasterDetail m,CountryDetail c where c.CountryId=m.CountryId and m.MasterDetailId= '2'
If In MasterDetail table if CountryId is null then it will not show me any record. So I want that record and its value with this query and checking null values. Help me about solving this query.
Thank You
Check For Null
Mar 11, 2008I am trying to create a stored proc.
I have to check a parameter for null value and if null then set it to zero
Here is the stored proc
set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
go
ALTER PROCEDURE [dbo].[UPDATENOA]
(
@Accepted char(10),
@NOAId bigint,
@Court char(30),
@RetainerType char(30),
@PendingInTaxCourt char(1)
)
AS
begin
UPDATE NOA set StageCode = Accepted,Court=@Court,RetainerType=@RetainerType,PendingInTaxCourt=@PendingInTaxCourt where NOAId = @NOAId;
Declare @Sequence int
Select @Sequence = MAX(Sequence) From [dbo].[NOAStages] where NOAId=@NOAId;
if @Sequence IS NULL
{
@Sequence=0
}
Insert into [dbo].[NOAStages] (NOAId,StageCode,Sequence)
values (@NOAId,@Accepted,@Sequence+1)
But this is giving me error. What is the correct way to do this.
Thanks
Use Order By But Want NULL Values As High Values
Nov 9, 2000Hi,
My query "select blah, blah, rank from tablewithscores" will return results that can legitimately hold nulls in the rank column. I want to order on the rank column, but those nulls should appear at the bottom of the list
e.g.
Rank Blah Blah
1 - -
2 - -
3 - -
NULL - -
NULL - -
At present the NULLs are at the top of the list, but I do not want my ranking in descending order. Any suggestions?
Thanks
Dan
Check For NULL In CASE
May 19, 2006SELECT whatever_field, CASE LEN(DrAccount) WHEN 12 THEN DrAccount ELSE CASE (Note1) WHEN NULL THEN Location + DrAccount ELSE Note1 + DrAccount END END AS Account FROM Table1 The purpose of the CASE(Note1) is when Note1 column is null, return Location+DrAccount. The actual result is when Note1 column is null, it always returns null, Location+DrAccount is not executed. When Note1 column is not null, it returns correctly Note1+DrAccount. The problem seems to reside in validating the null value in WHEN NULL How to check for null in CASE(fieldname) WHEN ???
View 1 Replies View RelatedPlease Check This 'not Null' SQL String
Jun 20, 2007the SQL string below worked, and then started bringing up every record.
it should only select records with a value in at least one of the columns, but it apears to be suggesting that all records have some data in one of the columns. if I check the database or the output on the web page there apears to be no data. ?? confused.
"SELECT id, make, model FROM vehicles WHERE workToBeDone1 IS NOT NULL OR workToBeDone2 IS NOT NULL OR workToBeDone3 IS NOT NULL OR workToBeDone4 IS NOT NULL OR workToBeDone5 IS NOT NULL"
Any ideas how I could implement this more robustly?
cheers
M
Check For Not Null In Either Of Two Columns
Apr 14, 2015Content table
deleteddate revokeddate
1/1/2001 null
null 2/2/2003
4/5/2004 null
I am trying to create a stored procedure where.I need to loop through every row of the table and check if there exists a date in either of the column. If date exists in either of the column for every row, I need to update some other stuff.For the above table, it meets my requirement, so I need to update. However if the table is as below, it doesn't meet the requirement, so I don't need to update
deleteddate revokeddate
1/1/2001 null
null null
4/5/2004 null
I started off as below, But I am getting incorrect values.
Declare @deleterevoke bit
Declare @DelRevId int
Declare @DelRevnumrows int
Declare @tempDeletedDate datetime
Declare @tempRevokedDate datetime
[code]....
How Do I Check If A Field Is Null?
Jul 2, 2007hi guys, I'm using SQLServer 2005 and I was wondering how I check if some variable is null or not? I tryied to do as the code show but it doesn't work:
declare @number int
set @number = (select number from numbers where number_id = 1)
if (@number = null)
begin
set @number = 12
end
Thank you very much
How To Check For Null Value And If Exist?
Aug 23, 2007Okay, I have the following statement for my store procedure:
Code Snippet
IF exists (SELECT [ID], [title], [name], [issueID] FROM [Outlook] WHERE ([issueID] = @OLissueID))
SELECT [ID], [title], [name], [issueID] FROM [Outlook] WHERE ([issueID] = @OLissueID)
ELSE
SELECT null ID, 'No parent page yet' title FROM Outlook
I wanted to put an ELSE IF statement right before the ELSE statement to check if the value is null. Something like this:
IF exists (SELECT [ID], [title], [name], [issueID] FROM [Outlook] WHERE ([issueID] = @OLissueID))
SELECT [ID], [title], [name], [issueID] FROM [Outlook] WHERE ([issueID] = @OLissueID)
ELSE IF (SELECT [ID], [title], [name], [issueID] FROM [Outlook] WHERE ([issueID] = @OLissueID) != null
SELECT [ID], [title], [name], [issueID] FROM [Outlook] WHERE ([issueID] = @OLissueID)
ELSE
SELECT null ID, 'No parent page yet' title FROM Outlook
Or if this is possible, it's much better:
IF exists (SELECT [ID], [title], [name], [issueID] FROM [Outlook] WHERE ([issueID] = @OLissueID) AND (SELECT [ID], [title], [name], [issueID] FROM [Outlook] WHERE ([issueID] = @OLissueID) != null)
SELECT [ID], [title], [name], [issueID] FROM [Outlook] WHERE ([issueID] = @OLissueID)
ELSE
SELECT null ID, 'No parent page yet' title FROM Outlook
I don't quite get how to write the SQL statement that I wanted so any help is much appreciated.
Check For Null In Repeater Date Field
Jan 27, 2008I'm about ready to pull my hair out. I have a repeater control, and a date field. If the field is a valid date, I'll use it to calculate and display the person's age. Otherwise, I want to display "N/A". My problem is trying to determine if the date field is null or not.I'm using SQL Server 2005 which allows Nulls in the date field, and for many records I don't have a birth date. It makes sense for these records to leave the date Null. This is my code:Protected Sub Repeater1_ItemDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.RepeaterItemEventArgs) Handles Repeater1.ItemDataBound If e.Item.ItemType = ListItemType.Item OrElse e.Item.ItemType = ListItemType.AlternatingItem Then Dim LabelIcon As Label = CType(e.Item.FindControl("LabelIcon"), Label) Dim LblAge As Label = CType(e.Item.FindControl("LblAge"), Label) Dim inmate As WAP.prisonmembersRow = CType(CType(e.Item.DataItem, System.Data.DataRowView).Row, WAP.prisonmembersRow) If System.IO.File.Exists(Server.MapPath("~/images/picts/" & inmate.FILE2 & ".jpg")) Then LabelIcon.Visible = True End If If inmate.DATE_OF_BIRTH Is DBNull.Value Then If IsDate(inmate.DATE_OF_BIRTH) Then LblAge.Text = "Age: N/A" Else LblAge.Text = "Age: " & GetBirthdate(inmate.DATE_OF_BIRTH) End If End If End IfEnd Sub How can I resolve this?Diane
View 7 Replies View RelatedT-SQL (SS2K8) :: Check If Variable Is Empty Or Null?
Sep 9, 2014declare @user varchar(30) = ''
if(@user is not null or @user <> '')
BEGIN
print 'I am not empty'
END
ELSE
BEGIN
print 'I am empty'
ENd
The output should be 'i am empty' but when i execute this i am getting ' i am not empty'. even i did browse through but i don't find the difference in my logic.
Check Constraint Does Not Work (compare With Null)
Mar 20, 2006Hi!I have a table with a check constraint. But unfortunately it does notwork like I wanted.CREATE TABLE MAP([R_ID] [T_D_ID] NOT NULL,[R_ID1] [T_D_ID] NULL,CONSTRAINT CHECK_ID1 CHECK (R_ID1 = R_ID OR R_ID1 = NULL),CONSTRAINT [PK_MAP] PRIMARY KEY ([R_ID]))R_ID1 should always have the value of R_ID or NullThe following statements should cause errors:insert into map (R_ID, R_ID1)values(1,2);update map set R_ID1=3 where R_ID=1;But there occur no errors. Does anyone have an idea? It is an SQL Server2000.TIASusanne
View 6 Replies View RelatedCheck Null Value Of Long Data Type
Jul 20, 2005Hi, I have a record set that is bound to a table in MS SQL Server. Onefiled in the table is bound to a "long" type member variable in theRecordSet. What will happen to the "long" variable when the field isNULL in the table?Thanks!-Yi
View 1 Replies View RelatedCan I Check For Null Reference Before Referencing ReportItems?
Feb 4, 2008A report I maintain has an extensive footer that appears on each page, populated with information I've stashed into invisible cells in the table's header. This works great, except in rare circumstances where the report includes a page that doesn't display the table at all--in which case the report errors when it attempts to print ("Object reference not set to an instance of an object").
Due to the requirements of the report, I cannot guarantee that the table will appear on every page, every time. Is there a way I can safely refer to the reportItems collection, in case of Nulls? I'll be okay with blank values in the footer in the cases where the page has no reportItems to work with, but I can't have the report blow up when printing.
Thanks in advance,
Jeff Lautenschlager
How To Check Null Or '' In Date Field In Expression And ...............
Aug 16, 2006I have a column say 'ActivationDate' which is a (database timestamp [DT_DBTIMESTAMP]) which I want to replace with an expression in derived columns
The condition is if 'ActivationDate' field is null or '' then 'Null' else 'ActivationDate'
I am struggling to write this condition. Without condition i.e. at present it saves the value in this database '1753-01-01 00:00:00.000'.
In the preview the 'ActivationDate'field does not show any thing so I recon it is either null or ''
Transact SQL :: Check For NULL In CASE / WHEN Statements?
Aug 5, 2015I have a table that keeps track of all changes that were performed in an application. There is a column called "old value" and column called "new value". There are some values in the application that don't require data therefore the "old value" or "new value" values can be empty. These columns are an nvarchar data type because the value can be text or numbers or dates. An example is "ReceivedDate". There is a report that is generated based on this table.
What is happening is the query in the report dataset is adding dates when it should be displaying empty. They query is using "CASE/WHEN/THEN". What I need is "When the column is "RecievedDate" and it is not null then convert it to a date". This is for formatting purposes.
This is an example of the table:
UpdateColumn
Old Value
New Value
ReceivedDate
7/8/2015 5:00:00 AM
ReceivedDate
7/8/2015 12:00:00 AM
7/9/2015 5:00:00 AM
ReceivedDate
7/9/2015 12:00:00 AM
So, the first time it was updated there was no value but it was replaced with July 8, 2015 and so on.This is what the report is displaying
This is the query:
CASE UpdateColumn
... WHEN 'ReceivedDate' THEN (replace(convert(varchar(11),CONVERT ( date, oldvalue ), 106), ' ', '-') )
...
I tried adding
CASE UpdateColumn
...
WHEN 'ReceivedDate' IS NOT NULL
THEN (replace(convert(varchar(11),CONVERT ( date, oldvalue ), 106), ' ', '-') )
...
But it did not like the "IS NOT NULL".
Check Constraint - Compare Sum Of Two Values In One Table Against Values Located In Another Table
Jul 26, 2014I am relatively new to SQL and as a project I have been asked to create the SQL for a simple database to record train details. I want to implement a check constraint which will prevent data from being inserted into a table if the weight of the train is more than the maximum towing weight of the locomotive. FOr instance, I need to add the unladen weight and maximum capacity of each wagon (located in the wagon type table) and compare it against the locomotive maximum pulling weight (the locomotive class table). I have the following SQL but it will not work:
check((select SUM(fwt.unladen_weight+fwt.maximum_payload) from
hauls as h,freight_wagon as fw,freight_wagon_type as fwt,train as t where
h.freight_wagon_serial_number = fw.freight_wagon_serial_number and
fw.freight_wagon_type = fwt.freight_wagon_type and
h.train_number = t.train_number) <
(select lc.maximum_towing_weight from locomotive_class as lc,locomotive as l,train as t where
lc.locomotive_class = l.locomotive_class and l.locomotive_serial_number = t.locomotive_serial_number))
The hauls table is where the constraint has been placed and is the intermediary table between train and freight wagon.
I may not have explained this very well; but in short, i need to compare the sum of two values in one table against a values located in another table...At present I keep getting a message telling me the sub query cannot return more than one row.
SQL Server 2012 :: Check To See If Columns Are NOT NULL In A Record
Jun 25, 2015I am looking for the best way to check to see if any columns are still NULL in a record. I have a form that gets filled out by users and the values entered into TableA. There are 6 columns in the table, 5 are responses and column6 indicates if the record is complete. So I want a way to see if all of the first 5 columns are NOT NULL and, if so, mark column6 with a 1.
I am thinking this would be a good thing for a trigger on INSERT or UPDATE to check to see if the first 5 columns are filled in and then mark the record as complete.
Integration Services :: SSIS Package - Replacing Null Values In One Column With Values From Another Column
Sep 3, 2015I have an SSIS package that imports data from an Excel file, replaces any value in Excel that reads "NULL" to "", then writes the data to a couple of databases.
What I have discovered today, is I have two columns of dates, an admit date and discharge date column, and what I need to do is anywhere I have a null value in the discharge date column, I have to replace it with the value in the admit date column.
I have searched around online and tried a few things using the Replace funtion in Derived columns but no dice so far.
Anyway To Check If A Text Field Is Blank (not Null But Just A Empty String '') ?
Oct 27, 2004i have a trigger on a table right now... when fields are inserted, theres a text field inserted and i want to check if that text field = '' (the empty string, not NULL) and if it doesn't equal that, then perform some row updates on other tables, but if it is empty, to not do anything else in the trigger... right now i have this:
Code:
IF ((SELECT Note FROM XATPoDetail WHERE ReqNbr = (SELECT ReqNbr FROM Inserted)) LIKE(''))
Note is the text field, XATPoDetail is the table where its being inserted into. I had to do the select FROM the table because it wouldn't let me select a text data type from the "Inserted" virtual table
but it tells me me "Error 279: The text, ntext, and image data types are invalid in this subquery or aggregate expression"
thanks
Anyway To Check If A Text Field Is Blank (not Null But Just A Empty String '') ?
Oct 27, 2004i have a trigger on a table right now... when fields are inserted, theres a text field inserted and i want to check if that text field = '' (the empty string, not NULL) and if it doesn't equal that, then perform some row updates on other tables, but if it is empty, to not do anything else in the trigger... right now i have this:
IF ((SELECT Note FROM XATPoDetail WHERE ReqNbr = (SELECT ReqNbr FROM Inserted)) LIKE(''))
Note is the text field, XATPoDetail is the table where its being inserted into. I had to do the select FROM the table because it wouldn't let me select a text data type from the "Inserted" virtual table
but it tells me me "Error 279: The text, ntext, and image data types are invalid in this subquery or aggregate expression"
thanks
How To Check For Null / Empty For A Variable In Post Deployment Script
Oct 28, 2015I am using SSDT to deploy my database project. This project has a post deployment script and i am creating a new user in this post deployment script. I have used sqlcmd variable to capture the username. I am doing a null/empty check for this variable and my code looks like below.
IF (([$(UserName)] IS NOT NULL) OR ([$(UserName)] <> ''))
BEGIN
CREATE USER [$(UserName)] WITHOUT LOGIN WITH DEFAULT_SCHEMA = dbo;
GRANT CONNECT TO [$(UserName)];
END
When i execute this, I am getting below error.
Could not deploy package.
Error SQL72014: .Net SqlClient Data Provider: Msg 207, Level 16, State 1,Line 15 Invalid column name 'User Name'.
Error SQL72045: Script execution error. The executed script:
Transact SQL :: Check 2 Columns And Return Rows As Long As One Column Is Not Null
Oct 19, 2015how to do a check for 2 columns. As long as there is data for at least one of the columns I want to return rows.
Example Data
create table test
(
ID int,
set1 varchar(50),
set2 varchar(50),
[code]....
How To Check DataSource Control For Values
Jan 18, 2008Hey all,
I was wondering what the best method of checking on page_load if a datasource control is pulling back nothing from a database. I want to display a message explaining that there is no data to be displayed. How would I go about doing that? I have tried searching google and whatnot but didn't find anything really helpful.
Here is the current code for the data source control.
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|EventInsider.mdf;Integrated Security=True;User Instance=True"
ProviderName="System.Data.SqlClient" SelectCommand="SELECT Events_Groups.GroupName, Events_Groups.GroupID FROM Events_GroupMembership INNER JOIN Events_Groups ON Events_GroupMembership.GroupID = Events_Groups.GroupID WHERE (Events_GroupMembership.UserID = @UserID)">
<SelectParameters>
<asp:SessionParameter Name="UserID" SessionField="UserID" />
</SelectParameters>
</asp:SqlDataSource>
But I have no idea what the code behind would be to check it on page_load. If there is no way to particularly do this, do you have to do it per control? Like dropdownbox's or gridviews? I am just confused on how to check to make sure there is data to be displayed.
Thanks,
Chris