IF Statment Using ISNULL Function

Aug 27, 2007

What is wrong with this code. I can not get ISNULL function to work

IF ISNULL([JRL_Req].[MDN])


UPDATE JRL_Req


SET [JRL_Req].[Product Code] = [OrderItem].[ProductCode]


FROM JRL_Req


INNER JOIN [order]


ON [JRL_Req].[Order ID]= [order].[OrderId]


INNER JOIN [OrderItem]


ON [order].[OrderId] = [OrderItem].[OrderId]




ELSE


UPDATE JRL_Req


SET [JRL_Req].[Product Code] = [OrderItem].[ProductCode]


FROM JRL_Req


INNER JOIN [order]


ON [JRL_Req].[Order ID]= [order].[OrderId]


INNER JOIN [OrderItem]


ON [order].[OrderId] = [OrderItem].[OrderId] AND [OrderItem].[MDN] = [JRL_Req].[MDN]


END IF

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Help Using ISNULL Function

Apr 18, 2008

Hey, I'm taking an intro SQL Server class, and I have a pretty simple homework assignment. We were provided with a DB and asked to write several SELECT statements. However, I'm stuck up one of the questions. Here is the question: 12.Create a SELECT statement that displays all employees and their Qualifications. Display that individuals with no Qualifications as having ‘NoQual’. Hint: Use a function to determine this ‘empty’ field using ISNULL.

Here is what I have:

SELECT
FNAME + ' ' + LNAME AS 'Employee Name', ISNULL(QUALID, 'NoQual') AS 'Qualifications'
FROM
EMPLOYEE, QUALIFICATION
WHERE
EMPLOYEE.QUALID = QUALIFICATION.QUALID;

However, I do not get any results that have a NULL value in the QUALID column. Here is the code for the DB:

CREATE TABLE emplevel
(LevelNoint,
LowSalaryint,
HighSalaryint,
CONSTRAINT emplevel_levelno_pk PRIMARY KEY (LevelNo));
GO

CREATE TABLE position
(PositionIdint,
PosDescVARCHAR (10),
CONSTRAINT position_positionid_pk PRIMARY KEY (PositionId));
GO

CREATE TABLE qualification
(QualIdint,
QualDescVARCHAR (11),
CONSTRAINT qualification_qualid_pk PRIMARY KEY (QualId)
);
GO

CREATE TABLE dept
(DeptIdint,
DeptNameVARCHAR (12) ,
LocationVARCHAR (15),
EmployeeIdint,
CONSTRAINT dept_deptid_pk PRIMARY KEY (DeptId)
);
GO

CREATE TABLE employee
(EmployeeId int,
LnameVARCHAR (15) CONSTRAINT employee_lname_nn NOT NULL,
Fname VARCHAR (15) CONSTRAINT employee_fname_nn NOT NULL,
PositionId int,
Supervisorint,
HireDate DATETIME,
Salaryint,
Commissionint,
DeptIdint,
QualIdint,
CONSTRAINT employee_employeeid_pk
PRIMARY KEY (EmployeeId)
);
GO

CREATE TABLE dependent
(EmployeeId int,
DependentIdint,
DepDOBDATETIME,
RelationVARCHAR (8),
CONSTRAINT dependent_empiddepid_pk PRIMARY KEY (EmployeeId, DependentId)
);
GO

INSERT INTO position VALUES (1, 'President');
INSERT INTO position VALUES (2, 'Manager');
INSERT INTO position VALUES (3, 'Programmer');
INSERT INTO position VALUES (4, 'Accountant');
INSERT INTO position VALUES (5, 'Salesman');

INSERT INTO emplevel VALUES (1, 1, 25000);
INSERT INTO emplevel VALUES (2, 25001, 50000);
INSERT INTO emplevel VALUES (3, 50001, 100000);
INSERT INTO emplevel VALUES (4, 100001, 500000);

INSERT INTO qualification VALUES (1, 'Doctorate');
INSERT INTO qualification VALUES (2, 'Masters');
INSERT INTO qualification VALUES (3, 'Bachelors');
INSERT INTO qualification VALUES (4, 'Associates');
INSERT INTO qualification VALUES (5, 'High School');

INSERT INTO dept VALUES (10, 'Finance', 'Charlotte', 123);
INSERT INTO dept VALUES (20, 'InfoSys', 'New York', 543);
INSERT INTO dept VALUES (30, 'Sales', 'Woodbridge', 135);
INSERT INTO dept VALUES (40, 'Marketing', 'Los Angeles', 246);

INSERT INTO employee VALUES (111, 'Smith', 'John', 1, NULL,'04/15/1960', 265000, 35000, 10, 1);
INSERT INTO employee VALUES (246, 'Houston', 'Larry', 2, 111,'05/19/1967', 150000, 10000, 40, 2);
INSERT INTO employee VALUES (123, 'Roberts', 'Sandi', 2, 111,'12/02/1991',75000, NULL, 10, 2);
INSERT INTO employee VALUES (433, 'McCall', 'Alex', 3, 543,'05/10/1997',66500, NULL, 20, 4);
INSERT INTO employee VALUES (543, 'Dev', 'Derek', 2, 111,'03/15/1995',80000, 20000, 20, 1);
INSERT INTO employee VALUES (200, 'Shaw', 'Jinku', 5, 135,'01/03/00',24500, 3000, 30, NULL);
INSERT INTO employee VALUES (135, 'Garner', 'Stanley', 2, 111,'02/29/1996',45000, 5000, 30, 5);
INSERT INTO employee VALUES (222, 'Chen', 'Sunny', 4, 123,'08/15/1999',35000, NULL, 10, 3);

INSERT INTO dependent VALUES (543, 1,'09/28/1958','Spouse');
INSERT INTO dependent VALUES (543, 2,'10/14/1988','Son');
INSERT INTO dependent VALUES (200, 1,'06/10/1976','Spouse');
INSERT INTO dependent VALUES (222, 1,'02/04/1975','Spouse');
INSERT INTO dependent VALUES (222, 2,'08/23/1997','Son');
INSERT INTO dependent VALUES (222, 3,'07/10/1999','Daughter');
INSERT INTO dependent VALUES (111, 1,'12/12/1945','Spouse');

ALTER TABLE dept
ADD CONSTRAINT dept_employeeid_fk FOREIGN KEY(EmployeeId)
REFERENCES employee(EmployeeId);
GO
--ALTER TABLE employee
--ADD CONSTRAINT employee_supervisor_fk FOREIGN KEY(Supervisor)
--REFERENCES employee(EmployeeId);

ALTER TABLE employee ADD CONSTRAINT employee_positionid_fk FOREIGN KEY (PositionId)
REFERENCES position (PositionId);
GO

ALTER TABLE employee ADD CONSTRAINT employee_deptid_fk FOREIGN KEY (DeptId)
REFERENCES dept (DeptId);
GO

ALTER TABLE employee ADD CONSTRAINT employee_qualid_fk FOREIGN KEY (QualId)
REFERENCES qualification (QualId);
GO

ALTER TABLE dependent ADD CONSTRAINT dependent_employeeid_fk FOREIGN KEY (EmployeeId)
REFERENCES employee (EmployeeId);
GO

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Dec 29, 2006

okay, using isnull function we could replace null value..
but i want to do opposite, i want to replace if it's NOT null..
i tried notisnull also cannot..

Note : this is for select statement
SELECT isnull(d.ClientID,'-') FROM blabla

How to replace something if it's not null
SELECT isNOTnull(d.ClientID, '-')

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SELECT JS_ID = ISNULL(ID.JS_ID,'-')
FROM
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dbo.FM_INVOICE_DETAILS ID
WHERE
I.INVOICE_ID = ID.INVOICE_ID
AND WO_ID = '-'--ISNULL(@GetLatest, '-')

is there any mistake i made? because it still return NULL when no data is found. how do i make it return '-' if a null is found

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Mar 20, 2008

Hi,
I created a new column in Derived column editor wich depends on two columns that I'm evaluation.

This is my function for the new column:

(COLUMN1 == "Hello") || ISNULL(COLUMN1) ? COLUMN2 : COLUMN3

The problem is that when a NULL data comes for COLUMN1, it doesn't insert the value of COLUMN2 as the formula estipulates. It looks like is not understanding de ISNULL function.
Any suggestion?
Thanks in advance.

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May 21, 2004

i'm trying to run an append query using data from 2 tables. i want to replace nulls with blanks ('') bellow is my statment. when i run this statment with out the iif(isnull)) statmentes the query works fine. is there another way of replacing my nulls with blanks.
Thank you,
Thomas

insert into tblcustomers (cusName, cusNumber, Active, cusContact, cusCrLimit,cusTerms)
SELECT dbo.tblCustomersIOA.CustomerName, dbo.tblCustomersIOA.Cust#,
dbo.tblCustomersIOA.Active,
iif(isnull(dbo.tblCustomersIOA.Contact),'',dbo.tbl CustomersIOA.Contact) ,
dbo.tblCustomersIOA.CreditLimit,
FROM dbo.tblCustomerNotesIOA RIGHT OUTER JOIN
dbo.tblCustomersIOA LEFT OUTER JOIN
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Jul 31, 2007

Hello all,

I have a problem that some of the data I reciave from the DB is null.
I would like to replace it with '0'.
I used the function IsNull on the SQL statment.
The problem is that I recaived a false/true values..
Is there an option to get the real data?

this is the SQL:

SELECT OrderDetails.itemID, OrderDetails.itemName, OrderDetails.quantityToPick, OrderDetails.quantityPicked, OrderDetails.colorDescription,
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FROM OrderDetails LEFT OUTER JOIN
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WHERE (OrderDetails.storeID = @storeIDTemp)


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I have an MDX query

WITH MEMBER [Measures].[Parm1] AS
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AS ([Month].[Calendar].[Month].&[20150531], [Measures].[Member Count])
SELECT ({[Measures].[Parm1],[Measures].[ResultValue]}) ON COLUMNS,
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FROM [TXERSDW]

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Jul 3, 2006

Hi



i m trying to call a function in insert statment

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when i test the function in querry builder all goes fine.

In my program i become a error

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I m using visual studio , tableadapter.update function to insert datarecords in db



thx for help

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Jan 18, 2008



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Thank you in advance .....

Regards,
sms

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Unfortunately, it only returns exact matches, as if it were written as "where lname = ISNULL(@lname, lname)"

However, if I query from a static table the code works correctly.Any ideas on what could be wrong?

Thank you.

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Jul 20, 2005

I have two tables, tblMTO and tblIMPORT_MTO. If I import an entire MTOinto the import table I want to create a delta from it (i.e. leave onlythe changed items). I have a view (simplified)SELECT dbo.tblIMPORT_MTO.ImportID, dbo.tblIMPORT_MTO.MTONo,dbo.tblIMPORT_MTO.Rev AS New_Rev, dbo.tblMTO.Rev AS Old_RevFROM dbo.tblIMPORT_MTO LEFT OUTER JOINdbo.tblMTO ON dbo.tblIMPORT_MTO.MTONo = dbo.tblMTO.MTONoNow to get all rows where old_rev = new_rev I also want all rows whereboth are null, is the best method to put ISNULL() in the view or toselect from the view using ISNULL in the criteria, e.g.select * from view1 where ISNULL(Old_Rev,0)=ISNULL(new_rev,0)or in the viewCREATE VIEW view1 asSELECT dbo.tblIMPORT_MTO.ImportID, dbo.tblIMPORT_MTO.MTONo,ISNULL(dbo.tblIMPORT_MTO.Rev,0) AS New_Rev, ISNULL(dbo.tblMTO.Rev ASOld_Rev,0)FROM dbo.tblIMPORT_MTO LEFT OUTER JOINdbo.tblMTO ON dbo.tblIMPORT_MTO.MTONo = dbo.tblMTO.MTONo;select * from view1 where Old_Rev=new_rev;

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Apr 24, 2006

does sql server mobile 2005 support the isnull function? I'm getting an error when I try to use it and I don't know if it is becuase of using the isnull function or not, but when I run the same query on Sql Server 2005 it works fine.

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I've seen lots of entries recommending the use of ISNULL in SQL WHERE clauses, e.g. in a search sproc where users can enter some or all parameters to search a table. Previously I would have used something like:SELECT * FROM MyTableWHERE (FName = @fname OR @fname IS NULL) AND(MName = @mname OR @mname IS NULL) AND(LName = @lname OR @lname IS NULL)So using the neat ISNULL syntax it could be updated to:SELECT * FROM MyTableWHERE (FName = ISNULL(@fname, FName)) AND(MName = ISNULL(@mname, MName)) AND(LName = ISNULL(@lname, LName))Having played around with this I stumbled upon a problem. If one of the fields, e.g. MName, is NULL then that clause will return false since MName = NULL isn't true and you have to use MName IS NULL. Did I miss all the caveats with using ISNULL in this way on fields that can contain NULL or have I missed something else? 

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I've got this query and it use to work or at least I thought it did. Could someone please help me with it.
Thank you
SELECT CID, CompletionDate, MarkedExport, CustomerName, EditUser, RouteID, WorkOrder FROM RouteCustomer WHERE (CompletionDate IS NOT NULL) AND (ExportDate IS NULL) AND (RouteID LIKE '%' + ISNULL(RouteID,@RouteID) + '%') AND (EditUser IS NULL OR EditUser = '' OR EditUser = @EmployeeID) AND (MONTH(CompletionDate) = ISNULL(MONTH(CompletionDate),@Month))
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thanks to anyone that can help me with this.
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Jun 7, 2005

I have to display string "not assigined" when a datefield is null in a table.
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To give you a little background, there is a CRM system with SQL server as its back-end. The CRM uses a view in SQL Server to list all the communications a user has had with his client over any given interval of time. Now there is a requirement to add a new column in the view that tells a user if the communication was filed in automatically or if it happened overnight via an automated archive manager process. I have achieved this using an expression field which is based on the comm_url field in the communications table in database.

example:

create view vCommunications
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alternatively, this can also be achieved by the following:

create view vCommunications
as
select col1, col2,...,isnull(comm_url, 'Manually Filed') as Filing
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Apr 9, 2008

Hi All,

Quick question...

why doesn't this work....
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How does it know what datatype I'm trying to get?

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Jun 17, 2008

I'm having a problem creating a isnull statement.
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I tried:
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FROM Addr_20080402
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CASE
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Any ideas how I should have written these two queries?
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I have a null in my column IV2.Inventory. So im trying the case statement at the bottom and keeping getting errors. Where am I going Wrong?

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Into #ttIV
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Group By Convert(DateTime, Convert(Char, RecordDate, 101)), StoreGroupID
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Select *, IV1.Inventory-IV2.Inventory/IV2.Inventory as Trend,
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From #ttIV IV1
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isnull(startweight) = case startWeight when NULL then 0 else startWeight end ?

I have read some where that using function on column while selecting a bunch of data makes the query slower because the function needs to work on each row of the table..


SO I was just thinking like

is the value of above 2 would be same perfrmance wise and value wise ?

Which one will execute faster?

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Hi All,

I want to accomplish something like this , I want to sum two of my columns and pass them as input into a third column, looks pretty simple but I think the way ISNULL is handled in SSIS is different from the way it is handled in TSQL.

Basically I wanna write an expression for the following TSQL


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Aug 24, 2007



hello,
I have a stored procedure that inserts or updates data depending of the value of one select that uses isnull finction. Here is the code:


Declare @id1 int
Select @id1= isnull(id,0) from tablename where name=@name

if @id=0
begin
insert.....
end
else
begin
update
end
the problem is that even i use isnull function the select statement does not return 0 in the @id when it does not find the record. ID column is of type Bigint and it is autoincremented identity

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Aug 17, 2007

Hi everyone,
I was browsing and came across this code with this result set
CREATE TABLE dbo.SalesByQuarter

(

Y INT,

Q INT,

sales INT,

PRIMARY KEY (Y,Q)

)

GO



INSERT dbo.SalesByQuarter(Y,Q,Sales)

SELECT 2003, 2, 479000

UNION SELECT 2003, 3, 321000

UNION SELECT 2003, 4, 324000

UNION SELECT 2004, 1, 612000

UNION SELECT 2004, 2, 524000

UNION SELECT 2004, 3, 342000

UNION SELECT 2004, 4, 357000

UNION SELECT 2005, 1, 734000

GO



SELECT Y,

[1] AS Q1,

[2] AS Q2,

[3] AS Q3,

[4] AS Q4

FROM

(SELECT Y, Q, Sales

FROM SalesByQuarter) s

PIVOT

(

SUM(Sales )

FOR Q IN ([1],[2],[3],[4])

) p

ORDER BY

GO



DROP TABLE dbo.SalesByQuarter

GO

Y Q1 Q2 Q3 Q4
2003 NULL 479000 321000 324000
2004 612000 524000 342000 357000
2005 734000 NULL NULL NULL

I tried to modify it to remove the nulls by changing this line of code

SUM( ISNULL(Sales,0))


I got this error


Msg 102, Level 15, State 1, Line 1

Incorrect syntax near 'ISNULL'.


so i tried it like this


and got this error

Msg 195, Level 15, State 1, Line 12

'ISNULL' is not a recognized aggregate function.


My question is why can't i use isnull to change NULL TO 0

Thanx
Slimshim

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I am trying to understand the block of sql code below. What I do not understand the second line, when they have isnull(max(PermissionValue),0)Can someone help me to understand what the purpose of this might be?
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