Default Value For NULL Value Input
Dec 5, 2007
hi,
I am using sql as a back-end server. My application requires to insert a default string values when the user do not provide any input or if the inpur is NULL. I have used the following code, but the defaul values are not inserted. I am not getting the desired result.
CREATE TABLE Employees1 (
EmployeeName varchar(50),
State char(3) NOT NULL DEFAULT 'NSW' ,
PostalCode int default 2000,
Country varchar(32) NOT NULL default 'Australia');
insert into Employees1 values ('diana', ' ' , 2,' ' )
The output is: EmployeeName State PostalCode Country
diana 2
Can anyone tell me what is that i am missing?
regards
Nongban
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May 3, 2006
Hello.
I've built a sample CLR function with the following declaration....
CREATE FUNCTION GetManager(@DeptCode nvarchar(3))
RETURNS nvarchar(1000)
WITH RETURNS NULL ON NULL INPUT
AS
EXTERNAL NAME Assembly1.[ClassLibrary1.MyVBClass].MyManager
And it works as expected, except when I use NULL:
DECLARE @MyManager nvarchar(1000)
EXEC @MyManager = dbo.GetManager NULL
PRINT @MyManager
It returns the value "Unknown" as it would have for any unknown DeptCode, as-programmed.
I'm of the theory it should have returned NULL without actually firing the function? Or is this only for non-CLR items... or stored procedures, not functions?
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May 3, 2007
I have a report that is run on a monthly basis with a default date of null. The stored procedure determines the month-end date that it should use should it be sent a null date.
The report works fine when I tell it to create a history entry; however, when I try to add a subscription it doesn't appear to like the null parameter value. Since I have told the report to have a default value of null it doesn't allow me to enter a value on the subscription page.
Now, I suppose I could remove the parameter altogether from the stored proc, but then the users would never be able to run the report for a previous time period. Can someone explain to me why default values aren't allowed to be used on subscriptions when they seem to work fine for ad hoc and scheduled reports? This is really quite frustrating as most of my reports require a date value and default to null so that the user doesn't have to enter them for the latest data.
An internal error occurred on the report server. See the error log for more details. (rsInternalError) Get Online Help
Key cannot be null. Parameter name: key
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Aug 3, 2005
hi,my structure table in database:Amount float(53) not null default 0when i try to run his script:alter table ABC alter column Amount float(53) nullit can only set the Amount to allow null, but can't set the defaultvalue to empty.anyone know how to set the field to allow null and default set toempty, no value.thanks
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Aug 2, 2015
I have 595 default constraints in my database. I can return a list of them using the following:
select * from sys.default_constraints
Is there a way I can return a list of just the ones where NULL is still allowed? I want to update all of the columns with a default value to not allow NULLs.
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Jan 8, 2015
I am passing few parameters to the sql function to do some calculations. If the input parameter is null or blank, then I want to set the input parameter to the value zero
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Jun 11, 2007
I'm attempting to use the Web Service task to call a method provided by a vendor. The inputs are all simple types so that helps a lot, but for one input it's a string array. If I enter a single string value for a given id using the array dialog, the method works fine.
However if I try to change the input to use a variable to provide the value it fails. I'm assuming that you can't create a variable to return a string array. Please let me know if this is the case or if I'm missing something obvious ;-)
In addition, is there a way to specify a null value for an input? Currently there doesn't appear to be a way to do this in SP2. I tried leaving the string empty which didn't work and I tried using a variable with expression "NULL(DT_WSTR, 1252)" but that failed too.
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Apr 30, 2014
I am creating web application for state and dist wise map. I've the tables like
create table ind_state
(
ind_stat_id int,
ind_state_name varchar(50)
)
insert into ind_state values ('1','Pondi')
[Code] .....
My output is depends on the dist selection so made procedure
alter procedure LAT_TEST_DYNAM0
@dist_id int
as
begin
create table #temp (pincode varchar(10) ,latitude numeric(18,10),longitude numeric(18,10) ,descp varchar(5000))
if @dist_id!=0
[Code] ....
Myself doubt is when @dist_id is null or "0" how to show default value ?
Otherwise above my code is correct?
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Feb 6, 2007
Do I have to use condition split?, then union all?
if in script, I can use update from <tablename> Set column = isnull(column, 'NA'). It's so simple.
I'm also wondering can we run SQL Script against input dataset in a SSIS component?
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Apr 7, 2008
my stored procedure is
create procedure t1 (@a int,@b int,@c int,@d int,@e int,@f int)
as
begin
select no,name,department from emp where a = @a and b =@b orc =@c or
d = @d or e = @e or f = @f
end
my problem is while executing i may get null values as input to the stored procedure .
how to validate them ? any ideas .
are there any arrays.
if c and d are null then my condition would be
where a = @a and b =@b or e = @e or f = @f
how many loops shall i have to write.
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Jan 23, 2008
I want to write an Query for a report that has 7 parameters. I want to allow Null for these parameters but at the same time in the Query i want to put an AND condition for all the parameters. I cannot put an OR condition.
For Example;
If i have a report with 2 parameters then the script will have 2* 2 If conditions
something like:-
if( @parameter1 is not Null and @parameter is not Null)
select A, B, C
From Table 1
Where parameter1 = @parameter1 and parameter2 = @prameter2
if( @parameter1 is not Null AND @parameter2 is Null)
select A, B, C
From Table 1
Where parameter1 = @parameter1
If( @parameter1 is Null AND @parameter2 is Not Null)
select A, B, C
From Table 1
Where parameter2 = @parameter2
If( @parameter1 is Null AND @parameter2 is Null)
select A, B, C
From Table 1
For 7 parameter there will be way too many If conditions. Is there an better approch to write a Query for such a situation?
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Feb 19, 2007
Hi,
I'm pretty new to ASP.NET and VB, but I'm working on a project which is essentially a staff directory. Using VS 2005, I've setup a basic grid view which connects to an object which connects via a data layer to a SQL database with Name, Surname, Email, Extension No and Department fields.
I have it working so that if a user enters a name and surname for example, it will return all records with either the name matching or surname matching input parameters. What I want to do is to set up a SQL query which is:
SELECT * FROM records WHERE (Name LIKE @Name) AND (Surname LIKE @Surname) AND (Email LIKE @Email) AND (Dept LIKE @Dept)
so that if the user only enters the first name and surname for example as above, it ONLY returns the record which matches the first name and surname and not all records with either/or. One way I've thought of to do this is to convert the empty fields to "Nothing" so that it fullfils the search parameter for the empty fields. If someone can explain how to do this, or can suggest a better way, I'd be grateful.
Cheers,
Tom
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Apr 23, 2008
I have a table that has a date field that can't be null. When a new record is created, if a date is not passed in, I want the default to be the current date. How can I set that? I tried Now, Today, GetDate, etc. Diane
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Feb 3, 2005
Hi
I have a table with the list of employee and 15 column with data type float or money , that represent the number of hours, airfare,gas,parking food, etc....
I have 2 choice:
-Put 0 as a default value for each column, like that I do not have to use coalesce when I do SUM for each column.
-Leave the default value null but I will have to use coalesce.
In term of performance, what is the best solution?
Thanks
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Aug 10, 2007
If no value is supplied on an insert for an int column that allows nulls, will the value be null or 0 ?
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Aug 1, 2006
I am designing a new table with a few columns that may or may not havea value on each row that is inserted.What issues determine whether to allow a NULL value to be inserted forthat column or define a default value to be used?I want to think through the repercussions of this decision before I getinto production.
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Jan 29, 2008
I have defined 8 varchar columns as not null with default, i.e.
[Namad8] [varchar](40) COLLATE Latin1_General_CI_AS NOT NULL DEFAULT (' '),
I run a script transformation (Flat file source, OLE DB dest) that splits a crlf delimited field an array, and then loads each array element into one of the not null table columns as above. However there may be less than 8 elements present in the input field, which means the remaining columns are not populated.
When I run the data flow task, I get the error
"
Error: 0xC020901C at Capture Assessments, OLE DB Destination 1 [1]: There was an error with input column "Namad8" (24) on input "OLE DB Destination Input" (14). The column status returned was: "The value violated the integrity constraints for the column.".
I know I'm trying to insert a null value into the column, but my understanding was that SQL would default the column to spaces. If I define the column to allow nulls, the data flow works fine.
Any idea what I'm doing wrong here?
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Apr 25, 2001
how can you alter a table so that you can add a default value whenever the field is NULL? for example, whenever the table is brought up in a query, NULL is replaced with UNKNOWN
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Feb 14, 2008
Is there any way to make a column to accept NULL but stores it as default value of Column Property?
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Sep 23, 2014
I have a Nullable columns. I want the value to be zero if NULL is passed.
1) having a view for every such table,
2) using ISNULL for needed columns in that view
3) using those view for inserts instead of using tables directly.
This way i can reduce the number of places to use ISNULL in all my SPs.I dont want to make it to NOT NULL, as my application impact will be high. And Default constraint does not work here.
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Nov 13, 2007
Hi,I am using SQL Server 2005 32 bit version. Could any one clarify methe caption database option with some examples? I am quite confusedwith the explanation given in MSDN. Kindly help me.Thanks in Advance.Om Prakash
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Feb 18, 2008
Hello
I've written a stored procedure with 4 parameters
create procedure dummy
( @a int, @b int, @c varchar(50), @d varchar(50))
now from front end(I'm using c#.net)
I want to send the values according to some criteria
So in the process...I've only values for @a & @c ...
so In order to reduce the code of sending Null values explicitly to other parameters...
can't I set like default values for it so that If I don't send values to certain parameters it will have the default value or Null value.
like I want something like this:
create procedure dummy
( @a int NULL, @b int NULL, @c varchar(50) NULL, @d varchar(50) NULL)
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Jul 16, 2006
I have a datatable : Data_Table and a look up table: Lk_table. Myfield that I
use in Inner Join is defined in both the
data and look table.
So I build my query like this:
SELECT * FROM dbo. Data_Table INNER JOIN
dbo. Lk_table ON dbo.Data_Table.MyField = dbo.Lk_table.Myfield
The pb, sometimes I
have myfield still with its default null value in the datatable: Data_Table.
So, I end up getting 0 record when I execute the query shown above.
How do I turn that around so that even if myfield in Data_Table
is Null, I still get the records from Data_Table. (I don t want a set of
records including all possible values from the look up table: Lk_Table)
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Dec 22, 2006
I have a stored procedure with a SELECT statement, that retrieves 1 row.
SELECT name FROM tblNames WHERE nameID = "1"
I want all the NULL values in that row to be change in some default values.
How do I do this?
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Oct 17, 2005
Hello,
I have a BIT column which accepts NULL values.
What would be a good method to allow an INSERT (or UPDATE) statement to insert NULL into this column but then automatically change the NULL to 0 (zero). In other words, test for NULLs after INSERT (or UPDATE) and change the value to 0 (zero).
Not exactly sure how to do this with a Trigger. Also, what is that [Formula] option used for (column properties in the Table Design view)... and would this apply with my problem?
Thanks,
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Oct 22, 2007
Hi,
I have the following problem: I'm connected to flat file source and trying to read data that is later inserted in an MS Access database. Everything wokrs fine instead of one thing - when I have null values in the flat file, I want those NULL values to be inserted in the MS Access db, instead of that what happens is that I actually get the default values for a column type from the flat file and later insert that defalut value. For example if I have a null value in an four-bite-signed-integer column of the flat file, I get 0 as value.
I thouth of solution using a "Derived Column" transformation which can transform the zeros into nulls, but decided to check with you guys if there is a smarter thing to do (for example to edit the flat file source to read the NULLs correctly).
Any advice is appreciated! Many thanks
Ventsy
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Jul 4, 2015
I have a report with datetime parameter which is required to be optional (there should be an option not to select this parameter which would cause in not narrowing result of this report by this parameter).
I used datetime parameter
@daTo (to have the calendar control for selecting date) and check on "Allow Null" value. Here is default Value.
I've also tried to set DefaultValue expression was "=Nothing".
IN my query of data set, here is the part I use the parameter @daTo
... Where (@daTo IS NULL OR TRUNC(@daTo) >= TRUNC(pe.start_time) ....
But when I run the report, I got below error:
ORA-00932: inconsistent datatypes: expected DATE got NUMBER
I think it @daTo value actually not null so it try to TRunc the value
I don't know how to set null value default in my report.
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May 12, 2015
I'm trying to have a default or null value in the dropdown list of the parameters on SSRS report. The dataset is bound with the Dynamics-AX 2009 AOT query. In the screen shot below you can see that I need a show All option in the dropdown list.
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Feb 9, 2005
'XXX_DTE' is character type which wont take NULL.
SELECT CONVERT(Datetime,XXX_DTE) FROM XXXX
I get result as : 1/1/1900
Why is it so.....
What I expect is '0000-00-00 00:00:00.000'
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Jun 6, 2006
Hi,
I have a data transform from a flat-file to a SQL server database.
Some of the flat-file fields have NULL values. The SQL table I'm
importing into does not allow NULL values in any field, but each field
has a Default value specified.
I need to have it so that if a null value comes across in a field using
the data transform, it takes the table default on import. I could of
sworn I had this working a few days ago, but I get errors now that
state I'm violating table constraints. Has anyone done this before?
Thanks
Jeff
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Aug 15, 2006
Hi,
In SSIS flat file import using fastload, I'm trying to import data into SQL 2005 previously created tables.
The table may contain column that are NULLable BUT there is NO DEFAULT for them.
If the incoming data from flat files contains nothing either between the delimeters, how can I have a NULL value inserted in the column instead of blank/empty string?
I didn't find an easy flag unless I'm doing something wrong. I know of at least two ways to do it the hard way:
1- set the DEFAULT(NULL) for EVERY column that needs this behaviour
2-set up some Derived Column option in the package to return NULL if the value is missing.
Both of the above are time consuming since I'm dealing with many tables. Is there a quick option to default the value to NULL WHEN there is NO data ELSE insert the data itself? So the same behavior that I have right now except that I want NULL in place of empty string/blank in the varchar(x) columns.
Thanks
Anatole
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Sep 20, 2006
Hey. I need to substitute a value from a table if the input var is null. This is fine if the value coming from table is not null. But, it the table value is also null, it doesn't work. The problem I'm getting is in the isnull line which is in Dark green color because @inFileVersion is set to null explicitly and when the isnull function evaluates, value returned from DR.FileVersion is also null which is correct. I want the null=null to return true which is why i set ansi_nulls off. But it doesn't return anything. And the select statement should return something but in my case it returns null. If I comment the isnull statements in the where clause, everything works fine. Please tell me what am I doing wrong. Is it possible to do this without setting the ansi_nulls to off??? Thank you
set ansi_nulls off
go
declare
@inFileName VARCHAR (100),
@inFileSize INT,
@Id int,
@inlanguageid INT,
@inFileVersion VARCHAR (100),
@ExeState int
set @inFileName = 'A0006337.EXE'
set @inFileSize = 28796
set @Id= 1
set @inlanguageid =null
set @inFileVersion =NULL
set @ExeState =0
select Dr.StateID from table1 dR
where
DR.[FileName] = @inFileName
AND DR.FileSize =@inFileSize
AND DR.FileVersion = isnull(@inFileVersion,DR.FileVersion)
AND DR.languageid = isnull(@inlanguageid,null)
AND DR.[ID]= @ID
)
go
set ansi_nulls on
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