Getting Query Is Accept Null Values

Mar 18, 2008

 I am trying to have a query with the option for items to be null. (So users don't need to fill in the other fields if they choose not too)
 SELECT     Tickets.TicketID, Tickets.UserID, Tickets.SystemID, Tickets.Title, Tickets.Description, Tickets.Software, Tickets.Date, Systems.OS,
                      OS.OS AS Ostitle
FROM         Tickets INNER JOIN
                      Systems ON Tickets.SystemID = Systems.SystemID INNER JOIN
                      OS ON Systems.OS = OS.osID
WHERE     (Tickets.Title LIKE '%' + @title + '%') AND (Tickets.Software LIKE '%' + @software + '%') AND (Tickets.Description LIKE '%' + @descrip + '%') AND  (Systems.OS = @osid) OR
                      (@osid IS NULL)
This works when i give the LIKE values % as a parameter. So they can choose to search by title + software but not description or description and nothing else etc etc etc. The problem is, the osid. If I give it a value it works but if i try to do null, *. or % it always displays every item in the databse ignoring any of the previous like statements. Anyone have an idea?
 

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Primary Key Means It Should Not Accept Null Values Is It?

Sep 15, 2004

Friends,

I am inserting a value from vb.net to sql server 7.
i created a table in the sqlserver with primary key.
In VB.net form i didnt check the values of the check box.
when i try to save the empty or null the sql server should throw the error. but its accepting the null value.
how is it possible?
can anyone help me?
FYI:
table name: JobMast
Fields:
jobcode int primary key
jobtitle varchar(10)

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Mar 1, 2007

I have straight forward Insert Query, which takes values mainly from text boxes, however I am having trouble when the value is null.

eg
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When I run the Query I get...
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I also get this when the parameter can be a string.
I have set the parameter properties so that SourceColumnNullMaping to true (it was set as false - so hoped this might fix it!)

No luck.

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Apr 7, 2008

Hi

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Hello.

I have (2) related questions.

#1: I am using a paramterized query, but am unable to make it work if one of the values happens to be null.

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SqlDbType.VarChar));
           
    mySqlCmd.Parameters["@link1"].Value =
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            else
            {
           
    mySqlCmd.Parameters.Add(new SqlParameter("@link1",
SqlDbType.VarChar));
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If txtLink1 happens to be empty, I want @link1 to enter null. The
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#2: For debugging purposes, how can I view what my SQL string looks
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Nov 18, 2013

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UPDATE QUERY:
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Now here is the challenge, but even when I enter null values in the footer template textbox it has to save with the old values of the rows and not null values. I tried it and couldn't make it happen. So anything like putting the case for each column and mentioning like if null accept the old value and not null accept new value.

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Jul 23, 2007

Hello,

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Jul 28, 2006

I am hoping someone could help me understand why this is happening and perhaps a solution.
I am using ASP.NET 2.0 with a SQL 2005 database.
In code behind, I am performing a query using a parameter as below:
sql = "SELECT field_name FROM myTable WHERE (field_name = @P1)"
objCommand.Parameters.Add(New SqlParameter("@P1", TextBox1.Text))
The parameter is obtained from TextBox1 which has valid input. However, the value is not in the table. The query should not return ANY results. However, I am getting one single row back with null values for each field requested in the query.
The SQL user account for this query has select, insert, and update permissions on the table. The query is simple, no joins, and the table has no null values in any fields. If I perform the exact same query using an account with select only permission on the table, I get what I was expecting, no records. Then if I go back to the previous user account with more permissioins, and I change the query to pass the paramter this way:
sql = String.Format("SELECT field_name FROM myTable WHERE (field_name = {0})", TextBox1.Text)
I also get NO records retuned using the same criteria.
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Aug 2, 2006

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Table2: [PK][FK]areaID(int), areaDescription(nvarchar)

My cerrent query is:
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Jul 18, 2006

Using c# in the compact framework, is there a way to do a parameterized query for counting the number of records where a specified column is null. I tried all of these, but none of them work:

cmd.Add(new SqlCeParameter("@IntColumn", SqlInt32.Null));
cmd.CommandText = "select count(*) from TableName where IntColumn is not @IntColumn";

cmd.Add(new SqlCeParameter("@IntColumn", DBNull.Value));

cmd.CommandText = "select count(*) from TableName where IntColumn is not @IntColumn";

cmd.Add(new SqlCeParameter("@IntColumn", SqlInt32.Null));

cmd.CommandText = "select count(*) from TableName where not IntColumn = @IntColumn";

cmd.Add(new SqlCeParameter("@IntColumn", DBNull.Value));


cmd.CommandText = "select count(*) from TableName where not IntColumn = @IntColumn";

cmd.Parameters.Add(new SqlCeParameter("@IntColumn", SqlDbType.Int32));
cmd.Parameters["@IntColumn"].Value = SqlInt32.Null;
cmdGetNumRead.CommandText = "select count(*) from TableName where IntColumn is not @IntColumn";

cmd.Parameters.Add(new SqlCeParameter("@IntColumn", SqlDbType.Int32));

cmd.Parameters["@IntColumn"].Value = SqlInt32.Null;

cmdGetNumRead.CommandText = "select count(*) from TableName where not IntColumn = @IntColumn";

cmd.Parameters.Add(new SqlCeParameter("@IntColumn", SqlDbType.Int32));

cmd.Parameters["@IntColumn"].Value = DBNull.Value;

cmdGetNumRead.CommandText = "select count(*) from TableName where IntColumn is not @IntColumn";



cmd.Parameters.Add(new SqlCeParameter("@IntColumn", SqlDbType.Int32));


cmd.Parameters["@IntColumn"].Value = DBNull.Value;


cmdGetNumRead.CommandText = "select count(*) from TableName where not IntColumn = @IntColumn";

cmd.Parameters.Add(new SqlCeParameter("@IntColumn", SqlDbType.Variant));


cmd.Parameters["@IntColumn"].Value = SqlInt32.Null;
cmd.CommandText = "select count(*) from Meter where IntColumn is not @IntColumn";

cmd.Parameters.Add(new SqlCeParameter("@IntColumn", SqlDbType.Variant));



cmd.Parameters["@IntColumn"].Value = SqlInt32.Null;

cmd.CommandText = "select count(*) from Meter where not IntColumn = @IntColumn";

md.Parameters.Add(new SqlCeParameter("@IntColumn", SqlDbType.Variant));



cmd.Parameters["@IntColumn"].Value = DBNull.Value;

cmd.CommandText = "select count(*) from Meter where IntColumn is not @IntColumn";



cmd.Parameters.Add(new SqlCeParameter("@IntColumn", SqlDbType.Variant));




cmd.Parameters["@IntColumn"].Value = DBNull.Value;


cmd.CommandText = "select count(*) from Meter where not IntColumn = @IntColumn";

Whenever I use a "is not" in the query I get an exception, otherwise it returns a count of 0 which is not accurate. Any help will be appreciated.

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The error message I get is:

quote:Msg 512, Level 16, State 1, Line 4

Subquery returned more than 1 value. This is not permitted when the subquery follows =, !=, <, <= , >, >= or when the subquery is used as an expression.

So my question is; can this code be modified to pass it multiple SKUS and run a report on every item currently in stock?

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FROM
(SELECT pir.id AS id,aggregateQty AS aggregateQty,-qtyreceived as qtyreceived, (aggregateQty - qtyreceived) AS Diff, ReceivedOn AS ReceivedOn
,(
SELECT SUM (PurchaseItemReceive.qtyreceived)
FROM bvc_product pp

[code].....

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Row.OutputDatum1 = Row.Datum1

Else

Row.OutputDatum1 = CDate(System.Convert.DBNull)

End If



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e.g.

Rank Blah Blah
1 - -
2 - -
3 - -
NULL - -
NULL - -

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Thanks
Dan

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Apr 10, 2006

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Jan 16, 2006

Hi,

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Or


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What a normally use is just a simple "(DT_DBTIMESTAMP)[Column 34]"
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Apr 20, 2007

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Jul 31, 2006

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Thanks
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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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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
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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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How To Deal With Null Values

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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