Problem Accepting Null Values
Nov 16, 2006
I have created a stored procedure and when i execute it in sql server
2005 it runs fine...the user can put in a parameter or none at all and
the corresponding results are returned.
@name varchar(20) = NULL
select person.address
from person
where person.name = @name
My problem comes when i try using the stored procedure in my report in
ms reporting services. When i run the report and try not entering a
value for the parameter i get an error saying that it is required that
i enter the parameter. Any ideas?
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Jan 19, 2007
I've got a function which inserts into a database, and has arguments for each item being inserted
A couple of the items are integer datatypes (in SQL), but they will accept nulls
When I add my parameters, it asks to explicitly use the SQL datatype (which is integer):.Add("@myParam", SqlDbType.Int).Value = myParam
In the header of the function, I assumed I could make the argument optional - Optional ByVal myParam as Integer=System.DBNull.Value
However, when the function runs, I always get an error:System.InvalidCastException was unhandled by user code Message="Conversion from type 'DBNull' to type 'Integer' is not valid."
I make them all Optional (which won't happen, but various arguments may be, at different timesand I get this error, with the last item (which is on a separate line), in red:Constant expression is required.
How can I get around this?
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Jan 25, 2008
I 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
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Feb 23, 2007
I 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?
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Dec 9, 2013
I 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]
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Mar 29, 2006
Hi
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.
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Nov 9, 2000
Hi,
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
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Sep 3, 2015
I 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.Â
I have searched around online and tried a few things using the Replace funtion in Derived columns but no dice so far.Â
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Jul 17, 2007
I have a unbound text box that gets its date from the system (date.now).
The problem is that when I write it to SQL (via a SQL Insert Command) It throws an error.
It transpires that the format is wrong. It accepts the date such as 07/17/2007 just fine but not 17/07/2007 which is automatically generated.
My IIS has a locale setting with is correct for the UK.
How can I change SQL 2005 so that it accepts DMY for a date/time field
Thanks.
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Dec 6, 2001
Hi,
I am working on a DTS package in which one part is executing a SQL Task that's output is being stored in a global variable..or better yet, it WAS storing it. In the beginning it was working and I had an Active X task that would loop through the record set and write the contents in HTML to a flat file.
NOW, out of nowhere, when I press on the parameters button, I recieve the following error:
"The SQL Statement does not contain any parameters"
I made no changes and the funny thing about it is that I can still run the package and it still writes the output to the file, with different data if it applies ( it is calling a stored procedure ), I just cannot change it!
Has anybody ran into this? I have searched other discussion boards and there have been people with the same issue but I have not gotten a clear answer.
Any help would be very appreciative.
Jason...
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May 19, 2008
Hi, I ve a table, I want to fetch certain rows based on the value of a Column. That column is nullable, and contains NULL values.I used the following query,SELECT Col_A FROM TABLE1 WHERE SOME_ID = 1317 AND Col_B NOT IN (8,9) Here, Col_B contains NULL values too. I need to fetch all rows where Col_B is not 8 or 9.Now, if I use "NOT IN", it does not work. I tried reading on it and got to know why it does not work. Even "NOT EXISTS" does not help. But still I've to fetch my values. How do I do that?Thanks & Regards,Jahanzeb
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Apr 10, 2006
I have tried doing a search, as I figured this would be a common problem, but I wasn't able to find anything. I know that my SP is functional because when I use VWD execute the query outside of the webpage, I get the correct results -however I have to ensure that a field is either entered, or set to <NULL>. In my SET's I want it to use the wildcards.
What I want is to do a search (plenty of existing topics on that, however none were of help to me). If a field is entered, then it is included in the search. Otherwise it should be ignored. In my VB I have the standard stored procedure call, passing in values to all of the parameters in the stored proc below:
CREATE PROCEDURE dbo.SearchDog@tagnum int,@ownername varchar(50), @mailaddress varchar(50),@address2 varchar(50),@city varchar(50),@telephone varchar(50),@doggender varchar(50),@dogbreed varchar(50),@dogage varchar(50),@dogcolour varchar(50),@dogname varchar(50),@applicationdate varchar(50)AS IF @tagnum=-1 SET @tagnum=NULL SET @ownername = '%'+@ownername+'%' SET @mailaddress = '%'+@mailaddress+'%' SET @address2='%'+@address2+'%' SET @city = '%'+@city+'%' SET @telephone='%'+@telephone+'%' SET @dogcolour='%'+@dogcolour+'%' SET @dogbreed='%'+@dogbreed+'%' SET @dogage='%'+@dogage+'%' SET @doggender='%'+@doggender+'%' SET @dogname='%'+@dogname+'%' SET @applicationdate='%'+@applicationdate+'%'
SELECT DISTINCT * FROM DogRegistry WHERE ( TagNum = @tagnum OR OwnerName LIKE @ownername OR MailAddress LIKE @mailaddress OR Address2 LIKE @address2 OR City LIKE @city OR Telephone LIKE @telephone OR DogGender LIKE @doggender OR DogBreed LIKE @dogbreed OR DogAge LIKE @dogage OR DogColour LIKE @dogcolour OR DogName LIKE @dogname OR ApplicationDate LIKE @applicationdate ) AND TagNum > 0GO
I don't know why it is creating links inside my SP -ignore them. TagNum is the primary key, if that makes a difference.
On the webpage, it ONLY works when every field has been filled (and then it will only return 1 row, as it should, given the data entered). Debugging has shown that when nothing is entered it passes "".
Any ideas?
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Jun 29, 2000
I am trying to retrieve data from two different tables. One of the tables has more than 20 columns some of which are null. I would like to retrieve data from both tables excluding the columns which have null values. How do I do this?
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Nov 2, 2007
Would this take care of null values in either a.asset or b.asset?
SELECT convert(decimal(15,1),(sum(isnull(a.asset,0))/1000.0)+(sum(isnull(b.asset,0))/1000.0)) as total_assets
What's throwing me off is that there are multiple a.asset or b.asset for each unique ID. It seems to work, but I'm not following the logic too well. If I were doing this in another language, I would loop through, summing a.asset and b.asset wherever it's not null for each unique ID.
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Jan 16, 2006
Hi,
How can I use "Derived Column" to check if a Datetime value is null or not and if null to insert 00/00/00 instead. ?
The background being that while using a "Derived Column" to change a Column from a (DT_DATE) to a (DT_DBTIMESTAMP) everytime I get a null value it see's it as a error.
And the column in particular has ~ 37 K blank / null fields so Im getting a lot of errors
So far I have tried to use something like
ISNULL([Column 34])
Or
SELECT ISNULL(ID, '00/00/0000') FROM [Column 34]
Or
SELECT ISNULL(au_id, '00/00/0000 00:00') AS ssn
FROM [Column 34
but none seems to work [Column 34] being the offending column.
What a normally use is just a simple "(DT_DBTIMESTAMP)[Column 34]"
in the expression column, which seems to work well, but here I get alot of errors
Any ideas?
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Apr 20, 2007
I set up a new SQL database file, in that file I allowed nulls, When I went through code to save the record, the exception is saying it doesnt allow nulls.
Before I get to involved with SQL, is it a bad practice to use nulls?
If it is what do you enter in place of the null value,
which will lead to more code, right?
Davids Learning SQL
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Jul 9, 2004
Hi DBAs,
I am very new in SQL server. I created a table where one column is varchar(8000). But when I am trying to insert value from enterprise manager this column cann't accept a long text value. I counted that its' capacity is 1012 charecters. I have tried a lot but don't know how to solve this. I really need help from you. Pls help.
Thanks in advance
Rajat Raychaudhuri
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Jul 31, 2006
hi ive got a inert sub where i grab values from text boxes etxthe values are passed to a stored procedure however , one of these fields is a date field , but the field is not required ...so on this line if the date text box is left blank i get an error , not a valid date .Parameters.Add("@actiondate", SqlDbType.DateTime).Value = txtActionDate.Texti have tried ( the actiondate field can take nulls ..)if txtActionDate="" then .Parameters.Add("@actiondate", SqlDbType.DateTime).Value = nothing else.Parameters.Add("@actiondate", SqlDbType.DateTime).Value = txtActionDate.Textend if but this doesnt workwhat is the best way of allowing blank values to be passed to the stored procedure( it doesnt fall over with normal text / varchar fields ) thanks
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Dec 20, 2006
I have a sproce that accepts null for one of its parameters I can execute the sproce and enter null and it works fine, it returns all rows. When I try doing this with my GridView and the SQLDataSource it does not work. I need some help in understanding how the SQLDatasource wants a null. Here is what the parameter row of the SQLDataSource looks like.
<asp:ControlParameter ControlID="EnteredByText" DefaultValue="Null" Name="EnteredBy" PropertyName="Text"
Type="String" ConvertEmptyStringToNull="true" />
In my sproce I have setup the parameter as follows;
@EnteredBy Nvarchar(50)=Null
In my WHERE Clause I have:
WHERE (tblClient.EnteredBy = @EnteredBy OR @EnteredBy IS NULL)
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Jan 19, 2007
How can I check on NULL values in a Select statement?
SELECT ID FROM TabelWHERE somecolumn <> NULL??
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Mar 5, 2007
I wonder if someone out there can help me. I am writing an ASP application to query a MSSQL database. The users will be able to use one or all of 4 columns. There may be time when the columns are empty (null). How can I write a select query to ignore null values? A rough example of what I am talking about it below.
select * from table where value1='something' value2=<null> value3='something' value4=<null>
I would like to ignore the null values so that in effect the statement would just do the following.
select * from table where value1='something' and value3='something'
I realize my syntax is wrong but I think you get the idea. Any thoughts?
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Mar 12, 2007
I have a stored procedure that allows users to select addresses based on partially supplied information from the user. My procedure seems to work fine in all but a few cases. If a user decides to select all the rows for a particular country the procedure below does not return any rows even if the rows exist. I tracked this down to the fact that for Non US countries I set both the StateCode and Country Code to nulls. .
Below is a partial version of my code. Can anyone show me how I can do a "Like" Search even if some of the fields in the row contain null values?
Thanks
1 CREATE PROCEDURE dbo.Addresses_Like( @SendTo VarChar(50) = Null
2 , @AddressLine1 VarChar(50) = Null
3 , @AddressLine2 VarChar(50) = Null
4 , @City VarChar(50) = Null
5 , @StateCode VarChar(2) = Null
6 , @ZipCode VarChar(10) = Null
7 , @CountryCode VarChar(2) = Null)
8
9
10 Declare @SearchSendTo VarChar(50)
11 Declare @SearchAddressLine1 VarChar(50)
12 Declare @SearchAddressLine2 VarChar(50)
13 Declare @SearchCity VarChar(50)
14 Declare @SearchStateCode VarChar(2)
15 Declare @SearchZipCode VarChar(10)
16 Declare @SearchCountryCode VarChar(2)
17
18 If (@SendTo Is Null)
19 Set @SearchSendTo = ""
20 Else
21 Set @SearchSendTo = @SendTo
22
23 If (@AddressLine1 Is Null)
24 Set @SearchAddressLine1 = ""
25 Else
26 Set @SearchAddressLine1 = @AddressLine1
27
28 If (@AddressLine2 Is Null)
29 Set @SearchAddressLine2 = ""
30 Else
31 Set @SearchAddressLine2 = @AddressLine2
32
33 If (@City Is Null)
34 Set @SearchCity = ""
35 Else
36 Set @SearchCity = @City
37
38 If (@StateCode Is Null)
39 Set @SearchStateCode = ""
40 Else
41 Set @SearchStateCode = @StateCode
42
43 If (@ZipCode Is Null)
44 Set @SearchZipCode = ""
45 Else
46 Set @SearchZipCode = @ZipCode
47
48 If (@CountryCode Is Null)
49 Set @SearchCountryCode = ""
50 Else
51 Set @SearchCountryCode = @CountryCode
52
53
54 Select AddressID
55 , SendTo
56 , AddressLine1
57 , AddressLine2
58 , City
59 , StateCode
60 , ZipCode
61 , CountryCode
62 , RowVersion
63 , LastChangedDateTime
64 , OperID
65 From Addresses
66 Where SendTo Like RTrim(LTrim(@SearchSendTo)) + "%"
67 And AddressLine1 Like RTrim(LTrim(@SearchAddressLine1)) + "%"
68 And AddressLine2 Like RTrim(LTrim(@SearchAddressLine2)) + "%"
69 And City Like RTrim(LTrim(@SearchCity)) + "%"
70 And StateCode Like RTrim(LTrim(@SearchStateCode)) + "%"
71 And ZipCode Like RTrim(LTrim(@SearchZipCode)) + "%"
72 And CountryCode Like RTrim(LTrim(@SearchCountryCode)) + "%"
73 Order By CountryCode, City, AddressLine1, AddressLine2, SendTo
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Apr 10, 2007
I want to write a query to bring out any records in a table
where any of its fields contain a null value. I could do it in this way:
select *
from
customers
where name is
null
or role
is null
or email
is null
u003c/p>u003cp styleu003d"margin:0cm 0cm 0pt">u003cfont faceu003d"Times New Roman" sizeu003d"3">u003cfont coloru003d"#000000">However I want to perform a similar function for a number of tables and the method above would mean more sql and maintenance.u003cspan>Â u003c/span>I was hoping there was a simple way to do the same thingu003cspan> ie find any rows with a blank fieldu003c/span>?u003cspan>u003cfont faceu003d"Arial" sizeu003d"2">Â u003c/font>u003c/span>u003c/font>u003c/font>u003c/p>u003c/span>u003c/font>u003c/div>",0]
);
D(["ce"]);
//-->
However I want to perform a similar function for a
number of tables and the method above would mean more sql and maintenance. I was hoping there was a simple way to
do the same thing ie find any rows with a blank
field?
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Jun 4, 2007
I have a simple table on my webpage which shows data from my database.
It all worked fine apart from one part. I wanted the select statement to select only NULL values from a column, as these are classed as open queries. Once I have closed the query a 0 or 1 will automatically be posted and will no longer have a NULL value.
I have a simple select statement (which I will post on here when I log in with my work computer) and at the end I have a WHERE Column = NULL. I have also tried WHERE column <> 0.0 AND column <>1.0 and that did not work.
If I only did WHERE column <> 1.0, i only get the 0.0 results and none of the NULL results, but if I have no WHERE statement I get all the results including the NULL values.
Oliver
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Mar 1, 2008
Hi I have a table in my database and one of the columns is called 'Month'. Here only one month is inserted according to what the user selects from a dro down list.
WHat i want to be able to do is find the average of the column 'ScoreOut' on a month by month basis. My code works fine if th database contains at least one row with every month of the year represented. I run into problems when one of the months is not represented. here is my code:string month = "February";
SqlConnection myConn = new SqlConnection("Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\Database.mdf;Integrated Security=True;User Instance=True");String selectCommand = "Select AVG(CAST(ScoreOut as float)) from tblRound where Name = '" + lblName.Text + "' AND Month = '" + month + "'";
SqlCommand myCmd = new SqlCommand(selectCommand, myConn);SqlDataAdapter da = new SqlDataAdapter(myCmd);DataTable dt = new DataTable();
da.Fill(dt);
myConn.Open();
myCmd.ExecuteNonQuery();string info = String.Format("{0:0.00}", Convert.ToDecimal(myCmd.ExecuteScalar()));
myConn.Close();
lblHole2.Text = info;
Does anyone know how to get around this problem. If a month is not represented, i would like the label lblHole2.text to be equal to 0.
thanks
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Feb 24, 2004
Hi,
I am having a column subdate as smalldatetime.
The field can have null values. But I am not able to insert null values into the database.
i tried using subdate="". But it inserts some min value of my calendar popup.
Is there a way that i could insert null values into smalldatetime field of the SQl database.
Thanks,
-sriram
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Oct 4, 2004
I am retrieving a <NULL> value out of a SQL database, displaying it in a text box, then updating the database with the results of the text box.
I am using the following code to make the insert.
.Parameters("@BodilyInjuryPerson").Value = txtBodilyInjuryPerson.Text
When I have values for the text string, everything runs smoothly. However, when the database originally had a <NULL> or when I want to delete the currently existing value and replace it with a <NULL>, I get an error message stating... "Input string was not in a correct format".
Back in the old days, when I was using Random Access databases, you just inserted a Char(0). But that doesn't work any more.
Could somebody help me. I know there is a magic bullet, I just don't know what it is.
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Jan 28, 2005
Hi all
Iam having some problems with null values
try
{
cmd.Parameters["@fmv"].Value = Convert.ToDecimal(TextBox13.Text);
}
catch
{
cmd.Parameters["@fmv"].Value =System.Data.SqlTypes.SqlDecimal.Null;
}
for Empty Textbox values
i am getting the following error,
System.Data.SqlTypes.SqlNullValueException: Data is Null. This method or property cannot be called on Null values.
My Database is allowed to accept null values.
System.Data.SqlType.SqlDatetime.Null works but SqlDecimal.Null does not work.
Could any one help me with this?
Thanks
Raj
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Aug 3, 2005
For some reason my Stored Procs are not recognizing NULL values within my database:For example:Select *From ResultsWhere(home_Phone IS NULL)All the home_Phone vaules that are NULL are not being picked up by the query. Any ideas are appriciated. Thanks in advance everyone. RB
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Mar 8, 2000
I have a field called Trainee1 and there are about 3 in every 10 records that the value is <NULL> - I want to change that value to 0.
I have tried to use this command but it changed EVERY record to <NULL>
update Trainee1 set RegId=replace(RegId,'NULL','0')
Has anyone any suggestions on how to just change the records where the value of traineeId is <NULL>???
Thanks in advance,
Anthony
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Jun 22, 1999
Following SQL Statement is from BOL 7.0 and it doesn't return any data. But when I change the where clause to "WHERE advance IS NULL" it works. I am trying to do something like this in my own stored procedure. It works fine in 6.5 both ways. Is there any parameter to set? or any other problem. Thanks in advance.
SELECT title_id, type, advance
FROM pubs.dbo.titles
WHERE advance = NULL
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Jul 8, 2002
Hi,
I want to perform the following select statement
select (sum(ColA) + sum(ColB) + sum(ColC)) / 3
from tableA
Where ....
I want to add the sum of the columns and then divide it by a constant. The problem I am having is there are a lot of nulls in the database that I am working on (i.e. one of the values in the ColB is Null, which makes the result of the entire expession null).
How do I get around this. I need to add the values of the columns?
Any help would be appreciated.
Thanks,
Bill
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Mar 7, 2005
I have 2 separate queries, one produces a total and one doesn't at the moment as the criteria are not met.
I want to add the total field from both these queries together but becuase one is null value, the sum total is also null.
In access I would have used nz([Qry_1].[Total])+nz([Qry_2].[Total]) to get over this but SQL/adp doesnt seem to understand this.
Can you help?
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