I remember in the past using IsNull in a where filter of a stored proc that was used for a search form. I typically go about this in the following way. Is threre a better way to handle this?
I need to query to return a result for each unique machine with the latest date. The example result below would be returned because they have the latest date.
MachineA 5/7/2011 MachineB 5/5/2010
Select Distinct would almost do it, but I need each unique machine that has the latest date.
I need to add a filter clause like WHERE username = '%%%'
I know you will say 'why add a filter if you're not going to use it?' but I need to for a certain application which will use the parent query for child queries in which I select the specificity required for the child query's data set.I've tried '%*%' and '%_%' but always it returns nothing. I need the filter to exist yet not really filter.
I am putting a SELECT statement together where I need to evaluate a results field, to determine how the color indicator will show on a SSRS report. I am running into a problem when I try to filter out any non-numeric values from a varchar field, using a nested CASE statement.
For example, this results field may contain values of '<1', '>=1', '1', '100', '500', '5000', etc. For one type of test, I need a value of 500 or less to be shown as a green indicator in a report, and any value over that would be flagged as a red. Another test might only allow a value of 10 or less before being flagged with a red.
This is why I setup a CASE statement for an IndicatorValue that will pass over to the report to determine the indicator color. Using CASE statements for this is easier to work with, and less taxing on the report server, if done in SQL Server instead of nested SSRS expressions, especially since a variety of tests have different result values that would be flagged as green or red.
I have a separate nested CASE statement that will handle any of the values that contain ">" or "<", so I am using the following to filter those out, and then convert it to an int value, to determine what the indicator value should be. Here is the line of the script that is erring out"
case when (RESULT not like '%<%') or (RESULT not like '%>%') then CASE WHEN (CONVERT(int, RESULT) between 0 and 500) THEN '2' ELSE '0'
The message I am getting is: Conversion failed when converting the varchar value '<1' to data type int.
I thought a "not like" statement would not include those values for converting to an int, but that does not seem to be working correctly. I did also try moving the not to show as "not RESULT like", and that did not change the message.
How I can filter out non-numeric values before converting the rest of the varchar field (RESULT) to int, so that it is only converting actual numbers?
I use SQL Server 2005. I have approx. 50 tables in my database and 30 of them have a filed named "CompanyID". Example: create table A (ID int identity, NAME varchar(100), COMPANYID int)create table A (ID int identity, REF_ID int, FIELD1 varchar(100), FIELD2 varchar(100), COMPANYID int)
Also there are nearly 200 stored procedures that read data from these tables. Example: create procedure ABCasbegin /* some checks and expressions here ... */ select ... from A inner join B on (A.ID = B.REF_ID) where ... /* ... */end;
All my queries in the Stored procedure does not filter the tables by CompanyID, so they process the entire data.
However, now we have a requirement to separate the data for each company. That means that we have to put a filter by CompanyID to each of those 20 tables in each query where the tables appear.
Firstly, I put the CompanyID in the context so now its value is accessible through the context_info() function. Thus I do not need now to pass it as a parameter to the stored procedures.
However, I don't know what is the easiest and fastest way to filter the tables. Example:
I modified the above mentioned procedure in the following way: create procedure ABCasbegin /* some checks and expressions here ... */ -- gets the CompanyID from the context: DECLARE @CompanyID int; SELECT @CompanyID = CONVERT(float, CONVERT(varchar(128), context_info())) select ... from A inner join B on (A.ID = B.REF_ID) where ... and A.COMPANYID = @CompanyID and B.COMPANYID = @CompanyID /* ... */end;
Now I have the desired filter by CompanyID. However, modifying over 200 stored procedures is rather tedious work and I don't think that this is the best approach. Is there any functionality in SQL Server that can provide the possibility to put an automatic filter to the tables. For example: when I wrote "SELECT * FROM A", the actual statements to be executed would be "SELECT * FROM A WHERE CompanyID = CONVERT(float, CONVERT(varchar(128), context_info()))".
I was looking for something like "INSTEAD OF SELECT" triggers but I didn't manage to find any answer.
I would very grateful is someone suggests a solution for something like "global table filter" (that will help me make an easy refactoring)?
I have a table that has a group. In this group, I want to filter by 2 different expressions, concatenated with an OR. BUT I can't change the "And/Or" column value for the first entry because it is grayed out. The column will automatically change to an OR value if both my expression column fields are the same (which I don€™t want) but if I put any other value in to the expression field of the second row, the "And/Or" field of the first row automatically changes to an AND.
PLEASE! How do I get the And/Or field "ungrayed" so I can change it to what I want?
The 2 filters I and using check the UserID = to the user, and the other is checking a count to get the Top N 1. (So just showing the current user and the top producer)
for the query i created i need zeros where ever the filed is blank. i have used count(acc) for selecting the count . can any one help me out with sample query. Thanks in advance
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;
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.
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?
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)) The problem comes with in the WHERE clause. What I wanted it to do is if the user did want to use a RouteID critera then the user would speified one else it wouldn't, and it was my belief that the ISNULL feature in SQL was the answer for that. same for the Month. I believe the EditUser is fine the way it is written. thanks to anyone that can help me with this. Rex
I have to display string "not assigined" when a datefield is null in a table. I am using like ISNULL(datefiled, "not assigned"), but I am getting following error Syntax error converting character string to smalldatetime data type. Is there any way, I can acheive desired result. Please help
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 as select col1, col2,...,case when comm_url is null then 'Manually filed' else 'Automatically Filed' as Filing from Communications
alternatively, this can also be achieved by the following:
create view vCommunications as select col1, col2,...,isnull(comm_url, 'Manually Filed') as Filing from Communications
Now my question is, given that there are many rows in the communications table, which of the above two expression fields will be more efficient in performance i.e. CASE versus ISNULL. I've checked a lot on google but I haven't been able to come up with a concrete answer.
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:
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);
I'm having a problem creating a isnull statement. I want to do two things I want to list all of the accounts that have a null value in a numeric field. And I want to update those accounts to 0.00. I tried: select Account_Num, isnull(TotalDDMFEE, 0) FROM Addr_20080402 But it returned all records
For the update I tried: update Addr_20080402 CASE when TotalDDMFEE = ' ' then TotalDDMFEE = 0.00 AND update Addr_20080402 CASE when TotalDDMFEE = isnull(TotalDDMFEE, 0) then TotalDDMFEE = 0.00
Any ideas how I should have written these two queries? Thanx, Trudye
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, '-')
SELECT JS_ID = ISNULL(ID.JS_ID,'-') FROM dbo.FM_INVOICE I, 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
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?
Select StoreGroupID, Sum(SnapShotQuantity * SnapShotPrice) as Inventory, Convert(DateTime, Convert(Char, RecordDate, 101)) as [Date] Into #ttIV From Delsol.dbo.ItemSnapshotStore
Where DateDiff(mm,Convert(DateTime, Convert(Char, GetDate(), 101)),Convert(DateTime, Convert(Char, RecordDate, 101))) >= -24 and Day(RecordDate) = 1 and StoreGroupID = 1
Group By Convert(DateTime, Convert(Char, RecordDate, 101)), StoreGroupID Order By Convert(DateTime, Convert(Char, RecordDate, 101)) desc
Select *, IV1.Inventory-IV2.Inventory/IV2.Inventory as Trend, Case When IV2.Inventory (isnull(0,IV1.Inventory-IV2.Inventory/IV2.Inventory)) From #ttIV IV1 Left Join #ttIV IV2 on IV1.[Date] = DateAdd(mm,1,IV2.[Date]) --Drop Table #ttIV
Hi!I'm wondering whether it's possible to set up the MS SQL functionISNULL() as a default value to avoid NULL entries when importing datainto a table?!For example, I want the column1, to have a 0 (zero) as default value,when entering/importing data: isnull("column1",0)I remember that it is possible to set up with a date function likenow(), having for each record the current time as default value. Isthat also with isnull() somehow possible?Thx a lot!Peter
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 ?
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
(ISNULL(Column1 , 0) + ISNULL(Column2 ,0)) as Column3
I have a some currency fields that are sometimes null and I want to display them as '--' or something similar when they are such. I can do this with IIF statements, but I have a lot of them and would like a more manageable solution. I thought of the IsNull SQL Command, but the problem is that it won't let me insert char values into a currency field. Any other solutions? Thanks.
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
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? declare @ThePermissionValue as intSELECT @ThePermissionValue = isnull(max(PermissionValue),0)FROM Permission,WHERE Permission.EncryptedId = @TheId
select isnull(comments,'-') as comments from drawing_version where drawing_code='ACC -Arch -IS-2008-54642' the comment value value is empty i want to display as "-"
I'm constructing a single string of several counts with concatenated labels using SQL and want to not show zeros (or their labels). Is there a function within an SQL statement that will let me do this? ISNULL() sort of does this, but I really need to test for zero instead of NULL to eliminate noise data from the string.
When I run this code on a column of the type float or real it's ok, but not if the column is decimal, why?
this produces an error:
SELECT IsNull(column1,'') as column1 FROM mytable
---
this code works:
SELECT IsNull(column1,0) as column1 FROM mytable
---
The problem is that this query is used in a C++ environment to build an insert into another table. The query is build together in a CString. C++ considers a CString to have ended if it encounters a NULL, therefore I need the check on all columns.
The error message I get is:
"Error converting data type varchar to numeric."
Why is it ok to use float or rel, but not decimal??
