Bcp Out Empty String Into Csv Files

Jun 19, 2008

I have a SQL Server table with nvarchar type column which has not null constraint. I am inserting empty string ("") from Java to the table column. When I export this table into .csv file using bcp tool, empty string gets written as NUL character. Is there any way I can bcp out empty string as empty string itself instead of NUL to the file?

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Empty Log Files And Data Files

Sep 17, 2004

Hi!
I'm using replication with two database on SQL 2000,when begin, the log files size is 50mb and the data files size is 150mb. But now the log files size is 2Gb and the data files size is 4Gb. I would like to decrease the log files and the data files ??? How do i do this???
(I using Truncate and shrink doesn't change )
Thanks!!!

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May 4, 2015

I need to find all empty files in the database (SQL Server 2008R2 SP2) The files become empty after the archival of a partitioned tables.

I was trying this:

select f.name, *
from sysfiles f (nolock)
left join sys.filegroups fg (nolock)
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left join sys.indexes i (nolock)
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My file names are the same as the filgroup names containing the file, this is why I was joining by name.

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Empty String To Null

Jul 11, 2001

example
create view v_GuestOrder
as
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
3
4 tv

I need something similar to

Select
id_Guest,
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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Mar 22, 2006

I want to replace a column value with a null if the string is empty. I would have thought this simple expression would do it:

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Yet, I get the following error:

For operands of the conditional operator, the data type DT_STR is supported only for input columns and cast operators. The expression "...see above..." has a DT_STR operand that is not an input column or the result of a cast, and cannot be used with the conditional operation.

The expression works if I replace the NULL(DT_STR, 0, 1252) with say "A" and the expression works on other non-string columns. (As in "NULL(DT_I1) : (DT_I1)100")

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Insert Empty String Or Null To Sql Db

Jan 12, 2008

Hi:
Trying to insert null value into sql table, but not working, if I use:
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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.
Jt

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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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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.

THANKS JOHN

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Dec 6, 2007

In the Column Properties window's 'Default Value or Binding' property, how do you specify an empty string?

Thanks.

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Jul 7, 2007

Hi,
How could I define referential integrity using FK constraint which allow me to have empty string/ZERO number instead of NULL value ?

Thank you

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How To Use /Set Option To Set A Variable To Empty String

May 19, 2008



Hi,

I developed an SSIS package and I'm using the dtexec utility to run it. The package has a variable RunDate (datetime) and i want to set this value to "" (empty string) when i try to run this package using the dtexec.

Currently I'm getting an error Argument option not valid.
Thanks in advance

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Oct 1, 2015

I understand that we shouldn't shrink data files as it might cause heavy fragmentation along with log usage, high IO/CPU etc.

In a DB in which lot of DML transaction occur, there will be empty spaces whenever deletions occur.

Will SQL Server fill that part with data when new insertions occur ?.

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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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Default Empty String Value For Varchar Columns

Jun 4, 2008

Hi guys,
Is there a way to declare a default value of empty string '' for a varchar table column?
Thanks,Kevin

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Apr 29, 2014

Can we have blank value in Primary key field? Two fields are chosen as Primary Key for this table but the issue is at any given time one value will be blank when other is populated. Does sql server still order the records based on these keys? (Clustered index). Or should I just go about adding ID (identity)?

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Bcp Is Inserting Blank Space For Empty String

Jul 23, 2005

I'm doing a bcp out of a table to a file. Some of the fields in arecord may have an empty string.When I bcp out to the file and examine it, the fields that have anempty string in the database now show up in the file as having oneblank character.Why is bcp doing this? I don't want the blank character in my output.Thanks,Eric

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Jan 15, 2007

Where is SQL storing and caching the assemblies used by CLR SP?

I want to read a mapped configuration file for that assembly but it seems that assemblies are not read form their initial location.

Is there a way to use configuration files for the assemblies used by CLR SPs? (I don't want to use a static string to point to a file on the disk)

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Empty String Problem In Joined Data

Feb 13, 2008

Hello,
I have a problem where I need to include data from a table where one of the joined columns can contain empty strings. The emptry string column and its related columns need to be included in the results of the query.

The Join looks like this:


SalesData.dbo.tbl_CYProcessedSales ps
INNER JOIN SalesData.dbo.vw_Product_CYProcessedSalesXref xr
ON ps.Prod = xr.Prod
AND ps.Acct = xr.AcctCode
INNER JOIN TxnRptg.dbo.vw_NetNewRevenueUnion nn
ON xr.BillingType = nn.BillingType
AND xr.ProdGroup = nn.Product
AND xr.AcctCode = nn.AcctCode


The problem occurs on the xr.BillingType = nn.BillingType portion of the join. the nn.BillingType can contain empty strings. I've tried a LEFT join to vw_NetNewRevenueUnion, but this has not worked.


In vw_NetNewRevenueUnion, BillingType becomes an empty string within a CASE statement if BillingType is NULL. I've thought about using something like 'All' in the ELSE condition, and doing the same in the vw_Product_CYProcessedSales view just so I don't have to deal with an empty string.


If I were not to do that, is there some way I can handle the empty string issue within the join so that empty string records will be included in the query results?


Thank you for your help!


cdun2

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Select Returning Nbsp Instead Of An Empty String

May 15, 2008


I am using a SQLDataSource with the following Select query. If the "spouse" values are not in the database, I get the HTML non-breaking-space character back, rather than an empty string.


SelectCommand="select applicant_id, (applicant_last_name + ', ' + applicant_first_name) as applicant_name, CONVERT(varchar(10), applicant_dob, 101) as applicant_dob, applicant_ssn, (spouse_last + ', ' + spouse_first) as spouse_name, CONVERT(varchar(10), spouse_dob, 101) as spouse_dob, spouse_ssn from applicant where applicant_last_name like '%'+@last_name+'%' order by applicant_last_name"



Here is the relevant code-behind:


TextBox tb = (TextBox)formView.FindControl("SpouseName");

tb.Text = e.Item.Cells[4].Text;

DatePicker dp = (DatePicker)formView.FindControl("SpouseDateOfBirth");

if (e.Item.Cells[5].Text.Length > 0)

{

try // this is a try/catch because nbsp is not parsed as a date

{

dp.DateValue = DateTime.Parse(e.Item.Cells[5].Text);

}

catch

{

dp.txtDate.Text = "";

}

}

tb = (TextBox)formView.FindControl("SpouseSocialSecurityNumber");

tb.Text = e.Item.Cells.Text;



Thoughts?

Todd

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Sep 10, 2015

What is the format for the SQL Server empty string default value?

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Detect And Convert An Empty String (from Textbox) To Null?

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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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:
SELECT * FROM TABLE WHERE TABLE.FIELD IS NULL
... 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.

Thanx

Peter

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Lookup Transform Still Cannot Find Empty String Matches

Nov 24, 2007

Has anyone find solution for this problem.
i also checked
http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=298056&SiteID=1 and
http://blogs.conchango.com/kristianwedberg/archive/2006/02/22/2955.aspx


Suppose have a Dimension table

DimColor
----------------------------
ColorKeyPK(smallint) ColorAlternateKey(nvarchar(30))
-1 UnknownMember
1
2 Blue
3 Red
4 Black

Color with the ID 1 is empty string

FactOrders
---------------------------
OrderID Date Color Quantity

OrderID = 1 Color = 'Black' Quantity = 10
OrderID = 2 Color = 'Red' Quantity = 20
OrderID = 3 Color = '' Quantity = 10
OrderID = 4 Color = 'Blue' Quantity = 5
OrderID = 5 Color = Black Quantity = 10

When i use the Lookup transform it cannot find the ColorKeyPK

The result of the Lookup transform is.
------------------------------
OrderID = 1 Color='Black' ColorKey=4
OrderID = 2 Color='Black' ColorKey=3
OrderID = 3 Color='Black' ColorKey=NULL ----> This is the problem Lookup cannot find empty string. It should be 1.
OrderID = 4 Color='Black' ColorKey=2
OrderID = 5 Color='Black' ColorKey=4

Thanks from now.

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Empty String Equals To Blank: How To Change This Behaviour?

Feb 11, 2008

This seems to be a rather old problem (http://www.themssforum.com/SQLServer/Does-empty/) but I couldn't find an answer yet.

The problem is: I have two tables t1 and t2 where t1 is a staging area of t2.
t1: (id int not null, phone varchar(30))
t2: (id int not null, phone varchar(30))

Data in t1: (1, '') <- empty string
Data in t2: (1, ' ') <- a blank

Comparing t1.phone with t2.phone results in equality which in my opinion isn't correct.

The question ist: How can I change the behaviour of SQL-Server to result in inequality so that the change in my staging table is detected correctly?

Thanks in advance
Fridtjof

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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 c.id = o.id
where c.name = 'LongString' and o.name = '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)

END
Else Begin

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

END

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

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

END
Else Begin

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

END

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.

Thanks

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Anyway To Check If A Text Field Is Blank (not Null But Just A Empty String '') ?

Oct 27, 2004

i 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

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Anyway To Check If A Text Field Is Blank (not Null But Just A Empty String '') ?

Oct 27, 2004

i 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

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I have a requirement where i have to insert empty string in column whose datatype is decimal.

I have to replace the column value if it is null then insert it as ' '.

Obviously its generate error msg for conversion, is there any workaround for this. I cannot add 0 or other value as this column is used to generate some output value.

IIF(Column1 IS NULL, ' ', Column1))

I used TRY_PARSE but it insert null value if there is conversion error.

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Nov 7, 2006

Ok.. so I have a fixed position data feed. I read the file in as just whole rows initially, process a specific position and evaluate a conditional split to determine direction of the file for proper processing (file contains multiple recors with different layouts). This all works fine. I then use the derived column feature to process all the columns.

Most of the columns are as simple as SUBSTRING(RecordData,1,10) for example to get the first column. This all works for string data. I then have a column that is a date field. The problem occurs that the code SUBSTRING(RecordData,20,10) returns either a date or empty set of data if no date was in the original file. When this gets sent to the OLEDB connection (SQL Server 2005) into the date field it fails. If the record has a date it works, but if it is empty it fails the insert.

I tried to replace empty strings with NULLs with this code. REPLACE(TRIM(SUBSTRING(RecordData,20,10)),"",NULL(DT_WSTR,10)). This does not work. So my question is how do I bring a date field from a fixed flat file into a SQL datetime field using a derived column? More specifically is how do I set it to NULL if its empty data? When I use the above code it inserts all the rows from the file, but it sets all rows to NULL not just the empty ones.

Thanks.

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