I am trying to retrieve the maximum build number value for these products and display on the gridview as per some other conditions like user selected OS etc
Now clicking on All, I want to display the maximum build number values for productA,ProductB ,ProductC
and I am trying to use coalesce but unable to get my result.
I end up seeing only one value which is the maximum of everything.Instead I want the maximums of A B and C and display them concatenated with commas.
If I do the following with no max funciton, i see all the values but i just want max from each branch.
I have a stored procedure which receives a dynamically built WHERE clause. This is then appended to the sql query within like....'select * from table' +@where_clause. I know that I am possibly leaving myself open to sql injection so I wanted to find an alternate way of handling this. I stumbled across an article which speaks of using COALESCE as a way to sidestep using dynamic WHERE clauses....http://www.sqlteam.com/article/implementing-a-dynamic-where-clause In my application the user can enter 1-to-many textboxes as search criteria. What I have been doing is a series of IF statements to determine if each textbox is populated or not and build the WHERE clause accordingly.If tx_lastname.Text <> "" Then If (InStr(sqlwhere, "where")) Then sqlwhere = sqlwhere & " AND lname like '" & tx_lastname.Text & "'" Else sqlwhere = " where lname like '" & tx_lastname.Text & "'" End If End If If tx_firstname.Text <> "" Then If (InStr(sqlwhere, "where")) Then sqlwhere = sqlwhere & " AND fname like '" & tx_firstname.Text & "'" Else sqlwhere = " where fname like '" & tx_firstname.Text & "'" End If End IfAnd so forth. But the above article seems to insinuate that I provide a static WHERE clause like this...'select * from table WHERE LNAME = COALESCE(@lname, lname) and COALESCE(@fname, fname). And this would handle it.Have any of you ever used this before? This is my first question. My other question is could this particular method be made compatible to fit with the LIKE operator?My user needs to be able to search based on close matches. For instance, if they enter 'JOHN' in the last name field, the results should contain 'JOHN', 'JOHNSON', 'JOHNS', etc.Any help would be appreciated.
A few people have mentioned that i should use coalesce in the following statement. the problem is i don't know where i should be using itCan someone show me where i should place it? 1 SELECT (SELECT Location 2 FROM Location_Table 3 WHERE (Property_Table.LocationID = LocationID)) AS Location, 4 (SELECT TypeOfProperty 5 FROM Type_Table 6 WHERE (Property_Table.LocationID = TypeID)) AS TypeOfProperty, PropertyID, LocationID, TypeID, Title, Description, Price, Bedrooms 7 FROM Property_Table 8 WHERE (NULLIF (@MinPrice, 0) IS NULL) AND (NULLIF (@MaxPrice, 0) IS NULL) AND (NULLIF (@TypeID, 0) IS NULL) AND (NULLIF (@LocationID, 0) IS NULL) OR 9 (NULLIF (@MinPrice, 0) IS NULL) AND (NULLIF (@MaxPrice, 0) IS NULL) AND (NULLIF (@LocationID, 0) IS NULL) AND (TypeID = @TypeID) OR 10 (NULLIF (@MinPrice, 0) IS NULL) AND (NULLIF (@MaxPrice, 0) IS NULL) AND (NULLIF (@TypeID, 0) IS NULL) AND (LocationID = @LocationID) OR 11 (NULLIF (@MinPrice, 0) IS NULL) AND (NULLIF (@MaxPrice, 0) IS NULL) AND (TypeID = @TypeID) AND (LocationID = @LocationID) OR 12 (NULLIF (@MinPrice, 0) IS NULL) AND (NULLIF (@TypeID, 0) IS NULL) AND (NULLIF (@LocationID, 0) IS NULL) AND (Price <= @MaxPrice) OR 13 (NULLIF (@MinPrice, 0) IS NULL) AND (NULLIF (@TypeID, 0) IS NULL) AND (LocationID = @LocationID) AND (Price <= @MaxPrice) OR 14 (NULLIF (@MinPrice, 0) IS NULL) AND (NULLIF (@LocationID, 0) IS NULL) AND (TypeID = @TypeID) AND (Price <= @MaxPrice) OR 15 (NULLIF (@MinPrice, 0) IS NULL) AND (TypeID = @TypeID) AND (LocationID = @LocationID) AND (Price <= @MaxPrice) OR 16 (NULLIF (@TypeID, 0) IS NULL) AND (NULLIF (@LocationID, 0) IS NULL) AND (Price >= @MinPrice) AND (Price <= @MaxPrice) OR 17 (NULLIF (@TypeID, 0) IS NULL) AND (LocationID = @LocationID) AND (Price >= @MinPrice) AND (Price <= @MaxPrice) OR 18 (NULLIF (@LocationID, 0) IS NULL) AND (TypeID = @TypeID) AND (Price >= @MinPrice) AND (Price <= @MaxPrice) OR 19 (TypeID = @TypeID) AND (LocationID = @LocationID) AND (Price >= @MinPrice) AND (Price <= @MaxPrice)
I have inherited a db with slowness claims. Last week at a MS seminar where independent SQL Consultant gave presentation on performance gotchas. One of his top 5, do not use coalesce on joins and where clause. Of course it is all over this db. Looking at below was this a bad approach?
WHEREcoalesce(PM.ALTKEYDOC,'x') = coalesce(@AK,PM.ALTKEYDOC,'x') AND coalesce(PM.FIRSTNAME,'x') LIKE coalesce('%' + @FN + '%',PM.FIRSTNAME,'x') AND coalesce(PM.LASTNAME,'x') LIKE coalesce('%' + @LN + '%',PM.LASTNAME,'x') AND coalesce(PM.SEX,'x') = coalesce(@SX,PM.SEX,'x') AND coalesce(PM.BIRTHDATE,'1/1/1900') = coalesce(@BD,PM.BIRTHDATE,'1/1/1900') AND coalesce(PM.DIVISION,'x') = coalesce(@DI,PM.DIVISION,'x') AND PM.STATE = @STATE ORDER BY LASTNAME
I have a piece of a store procedure I don't quite understand, as follows:
SELECT d.DealReference, d.DealId, d.IllustrationId, ci.ContactId FROM utDeal d WITH (NOLOCK) INNER JOIN utContactIllustration ci WITH (NOLOCK) ON ci.IllustrationId = d.IllustrationId WHERE d.DealReference LIKE (COALESCE(@DealReference,'%'))
What exactly is the COALESCE function doing here with the parameter?
How would i use a coalesece on this function to get null. if i use coalesce(xxxxx,0). If there is nothing in there it returns a blank space but i need to put null in there
cast([DPVisionPlan] as nvarchar(255)) [DPVisionPlan],
I'm new to sql server. I googled the use of coalesce and find out it is another words a replace of ISNULL.I came across a piece of code posted in the forum about the different uses of coalesce.
use adventureworks DECLARE @DepartmentName VARCHAR(1000) SELECT @DepartmentName = COALESCE(@DepartmentName,'') + Name + ';' FROM HumanResources.Department WHERE (GroupName = 'Executive General and Administration')
I am having a problem with syntax. I am trying to sum a column where some of the values will be null and because I want to include the rows where the column may be null I am attempting to coalesce to zero.
Below is my sample:
SELECT *
FROM dbo.Student w
LEFT JOIN dbo.StudentDailyAbsence q ON q.StudentID = w.StudentID
Group BY q.StudentID
Having
(SUM(Coalesce(q.AbsenceValue),0) = 0.00)
COALESCE(SUM(q.AbsenceValue) = 0.00,0)
I have tried using the coalesce statement a couple of ways with no resolution, pls help!!
Hi,I have the following table with some sample values, I want to return the first non null value in that order. COALESCE does not seem to work for me, it does not return the 3rd record. I need to include this in my select statement. Any urgent help please.Mobile Business PrivateNULL 345 NULL4646 65464 65765NULL 564654654 564 6546I want the following as my results:Number3454646564654654Select COALESCE(Mobile,Business,Private) as Number from Table returns:3454646654654 (this is a test to see if private returns & it did with is not null but then how do i include in my select statement to show any one of the 3 fields)select mobile,business,private where private is not null returns:657655646546thanks
Hi everybody, I have a stored procedure that creates some temporary tables and in the end selects various values from those tables and returns them as a datatable. when returning the values, some fields are derived from other fields like percentage sold. I have it inside a Coalesce function like Coalesce((ItemsSold/TotalItems)*100, 0) this function returns 0 for every row, except for one row for which it returns 100. Does that mean for every other row, the value of (ItemSold/TotalItems)*100 is NULL ? if so, how can I fix it ? any help is greatly appriciated. devmetz
Hi All I have a problem in making out why Coalese is considered to be better than ISNULL .According to my investigation Coalesce Returns the data type of expression with the highest data type precedence.If for eg I have declared that I want to return the value only upto 3 char then why will I use Coalesce and override my requirement.Anyone with clear concept about this plz explain. DECLARE @v1 VARCHAR(3)DECLARE @i1 INT SELECT ISNULL(@i1, 15.00) /2, COALESCE(@i1 , 15.00) /2, ISNULL(@v1, 'Teaser #2'), COALESCE(@v1, 'Teaser #2') The result will be 7 7.500000 Tea Teaser #2
my question is about using coalesce function in SQLServer. This function brings up the first not null value. my problem is i cannot get the corresponding field name. this is what i use
SELECT COALESCE(Stop1, Stop2, Stop3, ...., Stop10) FROM ... WHERE ProjectID = #URL.ProID#
it returns,
(no column name) ---------------- 1 somebody@somthing.com
the fields in the DB goes like stop1, stop2, stop3,... so, i need to get which stop i am .thanks in advance.
from one of my solution, i havent had time untill now to ask detail what is this coalesce and nullif? Is nullif just like the isnull function? while coalesce is to replace null? can someone explain base on this eg??
d.LocID>= coalesce(nullif(@LocFrom, ''), d.LocID) and d.LocID<= coalesce(nullif(@LocTo, ''), d.LocID) and
Hi guys, can you please help me to solve this problem. I have to get distinct row from offering column of xyz table. I have to get offering1, offering2 from xyz table. But I am getting only offering1. I should not get duplicate rows from XYZ table. SELECT DISTINCT @Staging_Off= COALESCE(@Staging_Off + ',', '')+ Offering FROM xyz WHERE xyz.Offering NOT IN( SELECT DISTINCT Offering.Offering FROM Offering Join xyzON Offering.Offering= xyz.Offering AND Offering.SourceSystem= @SourceSystem )
I have three fields in a table say [F1, F2 & F3]. I need to fetch anyone of these three fields which has the maximum value between them.
In Simple words i'm looking for some function which is similar to COALESCE function which returns the first NOT NULL value of the fields that were passed as arguments.
FYI I'm using SQL Server 7.0 which does not supports UDF's
I'm preparing a report that will display provider number, provider name, and a single field that will show all the counties that specific provider serves. I realize from researching the coalesce posts that this can be done. However, when I try to retrieve data in the same select statement as my coalesce, I get the error: "A SELECT statement that assigns a value to a variable must not be combined with data-retrieval operations."The listing of the counties must be specific to the provider, so my original code was:
DECLARE @Counties varchar(1000) SET @Counties = '' SELECT a.PROV_ID, a.PROV_NAME, @Counties=coalesce(@Counties,'') + b.COUNTY + ',' from ECBH.dbo.tbl_PROVIDERS a inner join ECBH.dbo.tbl_Provider_Serv_Regions c on a.PROV_ID = c.PROV_ID inner join ECBH.dbo.tbl_Regions b on b.REGION_ID = c.REGION_ID where c.PROV_ID = a.PROV_ID and a.MASTER = 1
I thought about creating a table to hold the coalesced values (need to coalesce two other fields as well), but wouldn't an insert to a table fail for the same reason?The counties table does not relate to the provider table, but does relate to a provider_county table (which in turn relates to the provider table).
If you use Coalesce with Count will it return all values even when null? Reason I pose this question to you is that I am running the below query and am getting escalated results than what should be returned. 1st stop on the debug train is how does Coalesce handle it....for example Boston should return only 143 but the query retunrs 194 for Boston?
Code: Select Count(NumOnsite), originatingCity, Coalesce(Convert(varchar(4000),NewspaperNames), Convert(varchar(4000),MagazineNames)) As PaperNames From readytoshipOffsite Group By originatingCity, Coalesce(Convert(varchar(4000),NewspaperNames), Convert(varchar(4000),MagazineNames))
one is alway empty and the other always has a value -- i just need which ever one has a value -- i keep getting Error converting data type varchar to numeric
(COALESCE(TicketLoadQty, '') + ' ' + COALESCE(TicketTimeQty, '')) as theQuantity
If you look at BOL for [COALESCE] function we have:
Syntax COALESCE ( expression [ ,...n ] )
Arguments expression..is an expression of any type.
Return Types Returns the same value as expression.
------------------------------------------- Ok as it claimes , arguments can be of any type also the Return value, BUT when i execute the following command:
Print COALESCE('An String',12) -- just for example
and in generel when you have an string argument in this function you will receive the following error:
Syntax error converting the varchar value 'An String' to a column of data type int.
Could anyonel help me? Thanks in advance. Regards.
I've inherited a terribly designed database. When cells in the tables have nothing in them, rather than being NULL, they're just empty. So now I can't use COALESCE...
Is there a way for COALESCE to check if a cell is empty instead of NULL? And if not, is there a way to get around this?
Hi everybody,VARCHAR has a higher precedence than CHAR. If you have a querySELECT COALESCE(c1,c2) FROM T1where c1 is CHAR(5) and c2 is VARCHAR(10), I would expect the returntype to be varchar(10) similiar to UNION. However it turns out tobe CHAR(10). Does anyone know why that is so?Thanks,Steffen
If I have an SQL query which returns an aggregate of several decimal fieldslike so:(sum(COALESCE(myDecimal1, 0)+sum(COALESCE(myDecimal2, 0)+sum(COALESCE(myDecimal3, 0)) as MyTotalI get an rounded integer in MyTotal.However, if I do the following:sum(COALESCE(myDecimal1, 0)+COALESCE(myDecimal1, 0)+COALESCE(myDecimal1, 0)) as MyTotalI get a (proper) decimal value.Does anyone know why the first case returns an Integer?- Don
I am using a clever product called SQL Expert Pro to optimizeproblematic SQL statements. It works by generating syntacticallyidentical variations of the original SQL, finding all unique executionplans, and batch testing them.Anyway, it generally turns out that a very odd change dramaticallyimproves performance (for a PeopleSoft database on SQL Server 7). Runtime goes from 52 seconds to 8 seconds.The change is to replace a join condition in a where clause with anodd equivalent COALESCE construct, e.g. replace WHERE C.PAY_ID =D.PAY_ID with WHERE C.PAY_ID = COALESCE(D.PAY_ID, D.PAY_ID).Has anyone seen this sort of behavior before? Why would it beadvantageous to COALESCE on the same field twice?The original and COALESCE'd versions are shown below. Does the factthat this is a nine-table join over large tables have anything to dowith it?Original Query (52 sec)SELECT F.ACCT_ID,I.ENTITY_NAME,A.TNDR_SOURCE_CD,C.PAY_EVENT_ID,C.NON_CIS_NAME,C.NON_CIS_REF_NBR,C.NON_CIS_COMMENT,C.PAY_AMT,D.PAY_SEG_AMT,E.ACCOUNTING_DT,':1',':2',':3',E.FREEZE_OPRID,E.FREEZE_DTTM,E.FT_TYPE_FLGFROM PS_CI_TNDR_CTL A,PS_CI_PAY_TNDR B,PS_CI_PAY C,PS_CI_PAY_SEG D,PS_CI_SA F,PS_CI_SA_TYPE G,PS_CI_ACCT_PER H,PS_CI_PER_NAME I,PS_CW_FT EWHERE A.TNDR_CTL_ID = B.TNDR_CTL_IDAND A.TNDR_SOURCE_CD LIKE 'STK%'AND B.PAY_EVENT_ID = C.PAY_EVENT_IDAND C.PAY_ID = D.PAY_IDAND D.PAY_SEG_ID = E.SIBLING_IDAND E.ACCOUNTING_DT BETWEEN '2003-10-01' AND '2003-10-31'AND E.FT_TYPE_FLG IN ('PS', 'PX')AND NOT EXISTS (SELECT 'X'FROM PS_CW_INTERFACE_ID JWHERE J.PAYOR_ACCT_ID = F.ACCT_ID)AND E.SA_ID = F.SA_IDAND F.SA_TYPE_CD = G.SA_TYPE_CDAND G.DEBT_CL_CD = 'NCIS'AND F.ACCT_ID = H.ACCT_IDAND H.PER_ID = I.PER_IDORDER BY 2Optimized Query (8 sec)SELECT F.ACCT_ID,I.ENTITY_NAME,A.TNDR_SOURCE_CD,C.PAY_EVENT_ID,C.NON_CIS_NAME,C.NON_CIS_REF_NBR,C.NON_CIS_COMMENT,C.PAY_AMT,D.PAY_SEG_AMT,E.ACCOUNTING_DT,':1',':2',':3',E.FREEZE_OPRID,E.FREEZE_DTTM,E.FT_TYPE_FLGFROM PS_CI_TNDR_CTL A,PS_CI_PAY_TNDR B,PS_CI_PAY C,PS_CI_PAY_SEG D,PS_CI_SA F,PS_CI_SA_TYPE G,PS_CI_ACCT_PER H,PS_CI_PER_NAME I,PS_CW_FT EWHERE A.TNDR_CTL_ID = COALESCE(B.TNDR_CTL_ID,B.TNDR_CTL_ID)AND A.TNDR_SOURCE_CD LIKE 'STK%'AND B.PAY_EVENT_ID = COALESCE(C.PAY_EVENT_ID, C.PAY_EVENT_ID)AND C.PAY_ID = COALESCE(D.PAY_ID, D.PAY_ID)AND D.PAY_SEG_ID = COALESCE(E.SIBLING_ID, E.SIBLING_ID)AND COALESCE(E.ACCOUNTING_DT, E.ACCOUNTING_DT) BETWEEN '2003-10-01'AND '2003-10-31'AND COALESCE(E.FT_TYPE_FLG, E.FT_TYPE_FLG) IN ('PS', 'PX')AND NOT EXISTS (SELECT 'X'FROM PS_CW_INTERFACE_ID JWHERE COALESCE(J.PAYOR_ACCT_ID, J.PAYOR_ACCT_ID) =F.ACCT_ID)AND E.SA_ID = COALESCE(F.SA_ID,F.SA_ID)AND F.SA_TYPE_CD = COALESCE(G.SA_TYPE_CD,G.SA_TYPE_CD)AND G.DEBT_CL_CD = 'NCIS'AND F.ACCT_ID = COALESCE(H.ACCT_ID ,H.ACCT_ID)AND H.PER_ID = COALESCE(I.PER_ID ,I.PER_ID)ORDER BY 2
Hi, I downloaded "Microsoft SQL Server Compact Edition" v3.1, installed, created database in VS2005, created table TESTTABLE with one column TEST NVARCHAR 200 and run this command against it:
SELECT coalesce(test,NULL) from testtable
but it says
Error : The function is not recognized by SQL Server Compact Edition. [ Name of function = coalesce,Data type (if known) = ]
In this forums there are more usages of coalesce function, so I think it is supported and fully functional, but where is the problem, then ?
My system is Windows Vista Business (Czech version), version of sqlcese30.dll and sqlceqp30.dll is 3.0.5300.0.
