Transact SQL :: How To Get Zero Or Null Value For Empty Results In Server

Oct 7, 2015

I have written one query like this 

select staffid,staffname,deptname

From staff s join dept d on s.deptid=d.deptid

This query we have no results 

I need this results

staffid staffname deptname
null     null          null

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SQL Server 2014 :: NULL And Empty Strings

Oct 29, 2015

I have always (or at least intended to) treat NULL and empty strings separately in my SQL querying history. Now I have run across something that mystifies me (but probably shouldn't) that I would like an explanation for.

Consider this bit o' code:

IF @ORDER <> ''
PRINT 'Not an empty string'


Run this and you will get:

It is NULL

I was expecting:

Not an empty string
It is NULL

Why is NULL not passing the 'not an empty string' test? In other words, how does NULL = '' ? Is NULL cast to an empty string for this comparison?

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Change Not Null To Null, Default Value To Empty

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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SQL Server 2008 :: How To Get Rid Of NULL In Results From Case When

Sep 21, 2015

I'm trying to get a result set without the NULLs. Here is the code I'm using. I'd like the results to look like:

17285204 90471 090471
17285204 90715 090715
17285204 99396 099396
17285204 99420 099420
17285204 90471 090471
17285204 NULL G0444

create table #Test
AppNum varchar(10),
CPT varchar(10),
src char(1)
insert into #Test(AppNum, CPT, src) values('17285204','090471','b')

[Code] ...

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Sql Server 2005: Results To Text - Null Value

Oct 12, 2007

easy question:

If I use "results to text" option when executing a query in Ms SQL Server Management Studio null value is inserted as 'NULL' string in the result. Is it possible to have blank ('') string instead of 'NULL' in the result in 2005 version.

It must be possible, but I could not find it in tools/options

thank you in advance


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Empty Results?

Apr 19, 2007

Okay, so i have a procedure where i'm trying to build a left join, and for some
reason, if i store it into a procedure, it doesnt work, if i run it in query analyzer
i have no problem.

Manual Code:

create PROCEDURE search_orders_11

@SPSirvarchar(3)= null,
@debug bit = 0 AS

DECLARE @sql nvarchar(4000),
@paramlist nvarchar(4000)

if @spsir='1'
select @sql = @sql+ 'SELECT o.state_abbrv, count(o.state_abbrv) as kount FROM o left join dbo.Spanish s on o.per1_lname = s.lname'

select @sql=@sql+' WHERE 1 = 1'

SELECT @sql = @sql + ' group by o.state_abbrv ORDER BY o.state_abbrv '

here is the procedure:

create PROCEDURE search_orders_11

@SPSirvarchar(3)= null,
@debug bit = 0 AS

DECLARE @sql nvarchar(4000),
@paramlist nvarchar(4000)

if @spsir='1'
select @sql = @sql+ 'SELECT o.state_abbrv, count(o.state_abbrv) as kount FROM o left join dbo.Spanish s on o.per1_lname = s.lname'

select @sql=@sql+' WHERE 1 = 1'

SELECT @sql = @sql + ' group by o.state_abbrv ORDER BY o.state_abbrv '

here is the execution:

exec search_orders_11 @spsir=1

i get the whole command completed sucessfully, but no result. am i missing something here...

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Empty &&<&&> IS NOT NULL

Jul 22, 2007


I have a query that returns the appropriate values I need, however there is one field I'd like to add and utilize but my problem is I only want to use it if it contains data.

If I filter it with IS NOT NULL it returns all the records, including the empty records. The field is simply empty, and doesn't come back as NULL. If I filter it with =' ' , it shows all the records with the empty records only.

I need to do the opposite, be able to filter it only if it's not empty.

Any help would be appreciated.

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Remove Empty Strings From Results

Feb 6, 2007

i am makin an address block

trying to make it (address1 + ' ' + address2 + ' ' + address3) as address

is there a way to get rid of the address2 if there is nothing in it

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Empty String To Null

Jul 11, 2001

create view v_GuestOrder
Select T1.id_Guest,T2.OrderName
from Guest T1
left join Order T2 T2.id_order = T1.Id_order

select * from v_GuestOrder
Id_Guest OrderName
-------- -----
1 spoon
2 phone
4 tv

I need something similar to

case orderName
when '' then Null -- Sql server gives error in thsi case
end as orderName
from v_GuestOrder

So I need to assign NULL to OrderName is query return empty string,
it will be treated by Crystal reports as Null

Please help , thanks

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NULL On Empty Fields

Mar 16, 2008

How can I make empty cells show NULL on my table? Some cells show NULL others won't. Does this mean that they have contents?

The reason being is that, when I use the code

Select *
From Employees
Where JobDescription1 Like '%montly%'

Those with empty jobdescription1 show with the legitimate results.

Any help please?


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COALESCE: Empty Instead Of NULL?

Mar 25, 2008

I've inherited a terribly designed database. When cells in the tables have nothing in them, rather than being NULL, they're just empty. So now I can't use COALESCE...

Is there a way for COALESCE to check if a cell is empty instead of NULL? And if not, is there a way to get around this?

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Checking If String Is NULL Or EMPTY In SQL

Nov 9, 2007

I need to check in my Stored procedure if the information passed is null or empty so I can decided to insert the new value or keep the old. How do I accomplish this please in T-SQL. Thanks in advance.

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Insert Empty String Or Null To Sql Db

Jan 12, 2008

Trying to insert null value into sql table, but not working, if I use:
 if (strMyText.Length == 0)        command.Parameters.Add("@Text", DBNull.Value); // or using:("@Text", null), or using:("@Text", DBNull) else         command.Parameters.AddWithValue("@Text", strMyText); 
When I go back to table, I see the value is: 'NULL', has single quotation mark, suppose to be: NULL
Where is the problem?
Thanks a lot.

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Null, Empty Strings, And Efficiency

Oct 12, 2004

************* Edited by moderator Adec ***************
Inserted missing < code></ code> tags. Always include such
tags when including code in your postings. Don't force the
moderators to do this for you. Many readers disregard
postings without the code tags.

Well met,

Let's say I have a web form that allows users to insert and update records in a SQL database. Is it better to set empty web controls (textbox, etc.) to DBNull or let it go as an empty string into the database?

Example code:

if (tboxNAME.Text == "")
sqlCommand1.Parameters["@NAME"].Value = DBNull.Value;
sqlCommand1.Parameters["@NAME"].Value = tboxNAME.Text;

Is the above overkill? It seems like it would be a good idea to set fields which the user empties back to Null rather than an empty string.



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Null Or Empty String Use More Space?

Aug 9, 2005

Hi all,   I have some columns in my database which allows null.  I want to know if leaving the field to be NULL or storing an empty string into the field, which will take up more space?? if the field type is varchar(100)

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HELP : Empty String To Null Conversion By SQL

Nov 10, 2005

Hi folks,

I've have about 100 tables, for some reasons, column values that are originally NULL was inserted as emtpy string. So, I am wondering if I can write JUST ONE SQL (hopefully don't have to specify the field names in the SQL as well) for each table so that all the empty strings will be converted back to NULL.


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T-SQL (SS2K8) :: Field Has No Value But Is Not NULL Or Empty?

Aug 13, 2015

I added a new field to an existing ETL process which uses SSIS to ingest a CSV file. The new field in the file, Call_Transaction_ID, will not always be populated for every record and so can be NULL or empty for certain records.

Here's the problem:After the file is extracted into a staging table, the Call_Transaction_ID field is showing blank or empty when it has no ID for that particular record. The problem is when I try to then ETL this data into a fact table - I'm trying to set the Call_Transaction_ID field to -1 if it is NULL or empty, however SQL Server doesn't see the field as empty even though there is no value in the field so -1 will NEVER return.

Using a WHERE DATALENGTH(Call_Transaction_ID) = 0 returns 0 records, again because SQL Server doesn't see the field as empty or NULL.

What do I do now to get around this? How do I fix it?

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Analysis :: Convert A Zero To Null Or Empty?

Sep 10, 2015

I am working on a cube and I want to hide the results of a calculation if it is zero.

It is an inventory problem based on a transaction pattern. (add plus one to the inventory, add minus one to the inventory).

The sum of those two is zero, but the cube get messed but by thousands of zero.

I found some solutions of displaying 0 for NULL but I want to dispaly NULL (or empty) for 0.

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Why Search On Empty String Returns Results With A Space?

Aug 1, 2007

In sql server 2000 - our QA pointed out that his testing for empty strings returned 200 + rows but that when he clicked in the field there were obviously a space there. This issue came up because of the script I created to replace and earlier one that queried on empty strings instead of datalength and the earlier script always reported that it had updated x number of rows regardless of how many times it was run on the same database.

QA query based on the earlier script:
Select * from StringTable
WHERE (LongString = '' OR LongString IS NULL)

My script:
The fields are nvarchars in the newer database but older version of the database had varchars. I had created a script to replace empty strings as follows:

-- if LongString column is varchar - run varchar update else nvarchar update
If exists (Select * from sysobjects o
inner join syscolumns c on =
where = 'LongString' and = 'StringTable' and c.xtype = 167) begin

-- update varchar LongString
UPDATE StringTable
SET LongString = char(32)
-- Select * from StringTable
WHERE ((DATALENGTH(LongString ) < 1) OR LongString IS NULL)

Else Begin

-- update nvarchar LongString
UPDATE StringTable
SET LongString = char(32)
-- Select * from StringTable
WHERE ((DATALENGTH(LongString ) < 2) OR LongString IS NULL)


If exists (Select * from sysobjects o
inner join syscolumns c on =
where = 'ShortString' and = 'StringTable' and c.xtype = 167) begin

UPDATE StringTable
SET ShortString= char(32)
-- Select * from StringTable
WHERE ((DATALENGTH(ShortString) < 1) OR ShortString IS NULL)

Else Begin

-- update nvarchar ShortString
UPDATE StringTable
SET ShortString= char(32)
-- Select * from StringTable
WHERE ((DATALENGTH(ShortString) < 2) OR ShortString IS NULL)


My method for checking for datalength appears to work correctly why doesn't the QA script? I thought it might have to do with the nvarchar used in the table but I changed the column to a varchar and still has the same issue.


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Transact SQL :: Results From Secondary Server Inside Primary Server

Jul 14, 2015

Inside my sp on the Primary server are 3 commands:

exec msdb..sp_start_job @job_name = N'JobA'                                     --
Running on Primary ServerEXEC Server2.msdb.dbo.sp_start_job @job_name = N'JobB';Running on Secondary ServerSelect * from Server2.Table                                 --
Running on Secondary Server

So far the commands are working just fine when I kick them off one at a time.  But when I kick off the sp as a whole I notice that the timing just isn't keeping up.  For instance, Step 3 is running before Step 2 is finished.  It appears that as the Primary Server kicks off Step 2, it doesn't seem to care about the outcome and moves right to Step 3 which in turn provides me erroneous data.How can I get Step 3 to wait until Step 2 is actually finished keeping in mind the Secondary server is part of this equation?

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NULL Values Vs Empty String Vs Space

Oct 25, 2006

How do I define a field to have the default value = ''. Not NULL but not a space either in SQL Server 2005?

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Within A SELECT, How Do I Replace An Empty Or Null Value With A Value From Another Table?

Apr 20, 2008

Hello,I'm a beginner in SQL and I have been searching through the SQL Cookbook and Google but I can't seem to find an example of what I want to do. I want to create a report that will return names and emails using two of my tables. I want to use the email in my primary table in the select but if it is null or empty I want to replace it with an email from my secondary table. Below is what I would like to do but I got a syntax error with it in SQL Server 2000. SELECT MemberID As ID, MemberFirstName As FirstName, MemberLastName As LastName, (IF MemberEmail = '' THEN SELECT TOP 1 OtherEmail FROM OtherTable WHERE OtherID = MemberID) As EmailFROM PrimaryTableThanks for your time.Jason  

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T-SQL (SS2K8) :: Check If Variable Is Empty Or Null?

Sep 9, 2014

declare @user varchar(30) = ''
if(@user is not null or @user <> '')
print 'I am not empty'
print 'I am empty'

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.

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Check For Null Or Empty Values And Return 0

Mar 13, 2014

I 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),
[New Value] = SUM([Previous_Year]+[Current_Year])
from Finance
GROUP BY [Original], [FinanceYear]

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Parameter Value From Empty Text Box - Null Or 0 Length?

Jul 20, 2005

Hi,I run a stored procedure with a parameter given from a text box in an accessadp. If the text box is empty then what is passed to the parameter? I can'tseem to get it to flag up as either null, or 0 length.Any tips?Cheers,Chris

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How To Pull Null (empty) Records From SQL Database

Dec 5, 2007

How to pull null (empty) records from SQL database,

what query am I suppose to use to get result

help me

thank you

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Web Service Dataset With Null Or Empty Spaces.

Sep 6, 2007

I am using XmlDataDocuments returned by webservices and query in the reports to populate the reports.

The issue I have is if the dataset used to populate the XML document has any nulls or empty spaces in any field the whole column or row is missing in the data generated by my query in the Reports. Sometimes the whole data is not being returned to the reports.

Sample query I use

<Method Namespace="" Name="SelectReportRegisters">
<Parameter Name="p_registerType">
<Parameter Name="p_registerName">
<Parameter Name="p_asOfDate">

I have tested the webservice with sample data and it works well, returns data.

I use the ISNULL() in my stored procedures to avoid nulls but with empty strings, replacing them with a default value in the managed code is expensive and slows down the reports.
Is there some feature I am missing because of which nulls and empty strings are causing this problem.

I am using Reporting services 2005.

Any pointers will be truly appreciated.

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May 22, 2001

Hi, I wanted to create an exact database in another server, so I generated script of all tables,views, store procedures and ran the script on the new server. I was able to have all objects in the new server.
but when I run the following sql from sql query analyser, I get nothing in return. What do I need in order to get a valid response.


/*Truncate from all tables*/
select 'Truncate table ' + name from sysobjects where type ='u'
order by name

/*Count all table rows from all tables*/
select 'select count(*) as ' +''+ name + ' from ' + name from sysobjects where type ='u'
order by name

/*View all sp*/

select * from sysobjects where type ='p' and name
not like 'dt%'
order by name

/*View all triggers*/

select * from sysobjects where type ='tr'
order by name

/*View all Views*/
use master
select * from sysobjects where type ='v'
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Jun 9, 2007

 Hi all,I have this code that I use for my Search function:SELECT DISTINCT [MUSIC_TITLE], [MUSIC_ORIGINAL_SINGER], [MUSIC_PERFORMER]FROM t_musicWHERE (@MUSIC_TITLE IS NULL OR [MUSIC_TITLE] LIKE '%' + @MUSIC_TITLE + '%') AND (@MUSIC_ARTIST IS NULL OR ([MUSIC_ORIGINAL_SINGER] LIKE '%' + @MUSIC_ARTIST + '%' OR [MUSIC_PERFORMER] LIKE '%' + @MUSIC_ARTIST + '%')) But right now if I don't enter anything in one of the textbox (2 have two, either of them can be left empty), the above Sql statement doesn't return anything since ADO.NET can't tell an empty textbox and treat it at null... So anyone please help me how to detect an empty textbox and set that to null for the above SQL statement to work. (It work in SQL Manager Studio, when I set one of the parameter = null.) I'm very new to ASP.NET stuffs, so if someone can help me to convert that function to code-behind and help me to call it from the .aspx, that would be even better as I don't want to put the code in my .aspx page... But I'm not quite there yet. Thank you all,Kenny.  

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How To Pass Null Value To The Database If A Form Field Is Empty?

May 31, 2004

How can I pass into the database (@User_fax = null) if the fax form field is empty, from a command type Stored Procedure? For example:

Dim CmdUpdate As New SqlCommand("Form2_NewUser", strConnection)
CmdUpdate.CommandType = CommandType.StoredProcedure

CmdUpdate.Parameters.Add("@User_fax", SqlDbType.char, 9)
CmdUpdate.Parameters("@User_fax").Value = fax.Text()


And, the stored procedure inside Sql server:

USE market1
ALTER PROC Form2_NewUser
@User_id bigint, @User_fax char(9),...


SET User_fax = @User_fax, ...

WHERE User_id = @User_id

Thank you,

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Converting Empty String To Null When Inserting/updating

Mar 10, 2006

    I am using the following query to calculate date differences:select ..........DATEDIFF(d,  recruitment_advertising.advertising_date, career_details.RTS_Email AS Datetime) AS Ad_to_RTS_days FROM .....I have stored all my dates as NVARCHAR because of the issues with localization.If the value is an empty String my output is eg: -38700. which is way off and incorrect. Some of the values in my table are NULL and they produce the correct result.Is there a T-SQL statement to replace empy Strings with the NULL value in my tables.I'd like to use it as a trigger when inserting or updating to convert empty strings to NULLbefore the values are inserted.Thanks guys.

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Feb 15, 2007

I'd like to have Oracle's empty string behavior in SQLServer 2k5. Oracle treats an empty string as NULL's.

In PL/SQL can do:
... and it'd return rows containing NULL's as well as empty strings.

Can this be done? I couldn't find a setting for it.



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Inserting Empty Values Into NOT NULL Columns Via ODBC

Jul 20, 2005

We are writing a C application that is using ODBC to insert recordsinto a database. We have a NOT NULL column that can legitimately havean empty value, i.e. we know the value and it is empty (i.e. a zerolength string).We are using SQLBindParameter() to bind a variable to theparameterized insert statement <<in the form: INSERT INTO table VALUES(?, ?, ?)>>. We are using SQLExecDirect() to process the SQL.We are running into the problem where ODBC is converts the empty (zerolength) string into a NULL value and this errors due to the fact thatthe column is defined as NOT NULL.We do not want to redefine the column as NULL, becasue myunderstanding of the correct usage of a NULL column is to indicatethat a value is unknown or meaningless... in our case we know thevalue (it is empty) and an empty value has meaning within ourapplication.I'm sure that this issue has been seen and address thousands(millions?) of times... any guidance would be appreciated.

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