Avoiding Subselect Query
Mar 2, 2007
Hi,
Hope someone could help me in revising a long running query. Here is the query
select *
from table1
where classid is null
and productid not in (
select productid
from table1
where classid = 67)
In here table1 could have several occurance of productid in which productid could have different classid. The possible values of classid are: NULL,1,2,3,67. Basically I am looking for all records whose classid is null but should never had an instance in table1 where its classid is 67.
Do you have something like a "join" statment that will only include all records in the left table that is not in the right table?
Hope someone could help me with this. Thanks in advance.
-Ruel
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Sep 26, 2013
Is possible to use like hint with subselect? , i mean i want to find all rows in table A that contains a word in a field(CALLED CONTENT) in table B, concretely in a field called content too, i show you the idea although the syntax is incorrect.
select
' + char (39) + @country + char (39) + ' as PAIS,
A.ID,
A.IDUSUARIO MSISDN,
NULL AS MSISDN_COD,
convert(char(19),A.FECHA_ALVENTO, 121) AS FECHA_MO_LOCAL,
NULL AS FECHA_MO_LOCAL_D,
[code]...
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Mar 2, 2007
Hi,
Hope someone could help me in revising a long running query. Here is the query
select *
from table1
where classid is null
and productid not in (
select productid
from table1
where classid = 67)
In here table1 could have several occurance of productid in which productid could have different classid. The possible values of classid are: NULL,1,2,3,67. Basically I am looking for all records whose classid is null but should never had an instance in table1 where its classid is 67.
Do you have something like a "join" statment that will only include all records in the left table that is not in the right table?
Hope someone could help me with this. Thanks in advance.
-Ruel
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Jun 9, 2008
Hello all,
I currently have an asp script that is generating a 12 month rolling report. From asp I'm running a for loop with 12 iterations, each one sending the following query:
select count(a.aReportDate) as ttl from findings f left outer join audits a on a.aID = f.auditID
where f.findingInvalid <> 1 and month(aReportDate) = " & Mo & " and year(aReportDate) = " & Yr
where the Mo and Yr variables are incremented accordingly.
I actually have 4 sets of data being pulled back to populate a graph, so this results in 48 queries with each page load! Obviously not ideal. So I'm hoping to reduce this to 4 queries. I was playing with the following in enterprise manager:
DECLARE @DT DATETIME
DECLARE @CNT INT
SET @DT = '10/31/07'
SET @CNT = 1
WHILE(@CNT < 12)
BEGIN
select count(a.aReportDate) as ttl from findings f left outer join audits a on a.aID = f.auditID
where f.findingInvalid <> 1 and month(aReportDate) = month(@DT) and year(aReportDate) = year(@DT)
SET @CNT = @CNT + 1
END
I haven't yet added any logic to increment the date, but my concern is that it looks like it is returning 12 separate results. Is there any way to combine this all into one resultset that will be passed back to my asp script? Hopefully this makes sense?
Suggestions on a completely different approach would also be welcome.
Thanks!
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Mar 16, 2006
Is this syntax not supported by SQL Server 2000...?
select count(*) from (select useridentifier from registered_users
where useridentifier < -120)
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Jan 24, 2007
I have two tables with the following relevant fields:
Apps
appID appName
PBC
pbcID appID appCT
These are joined on appID. appCT can be 1 of 2 values, either "PC" or "LA". So an example of a few records in PBC would be:
1 1 PC
2 1 LA
3 2 PC
4 2 LA
5 3 PC
6 4 LA
...
...
You can see that for each App, in PBC there can be two related records - PC and LA. But for example, record number 5 is App 3 PC, but there is no App 3 LA. I am trying to build a select to tell me which Apps are not in PBC at all, AND which Apps only have either LA or PC, not both.
Help?
Thanks!
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Nov 16, 2006
I'm working on a purchasing website for a store. A request has many line items, and a line item can have many products. One of the characteristics of the line item data table is a total price, calculated from multiplying lineitems.quantity and product.price.
INSERT INTO lineitems (request_id, quantity, product_id, total_price)VALUES (@rid,@quant,@pid,@totalprice)WHERE @totalprice = (SELECT products.price * @quant FROM lineitems, products WHERE lineitems.product_id = products.id)
Visual Studio isnt accepting this. Is there a way to do this better?
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Aug 1, 2004
How do you combine the following 2 updates into one Update statement (1 SUBSELECT statement)
Update SPLL_Policy
SET SPLL_Policy.Prog_Year =
(Select TOP 1 Prog_Year From SPLL_WinsPolicy_Input
Where SPLL_WinsPolicy_Input.Policy_Number = SPLL_Policy.Policy_Number
ORDER BY SPLL_WinsPolicy_Input.DATE_TIME_RECEIVED DESC)
Update SPLL_Policy
SET SPLL_Policy.Prog_NAME =
(Select TOP 1 Prog_Name From SPLL_WinsPolicy_Input
Where SPLL_WinsPolicy_Input.Policy_Number = SPLL_Policy.Policy_Number
ORDER BY SPLL_WinsPolicy_Input.DATE_TIME_RECEIVED DESC)
Thanks
Harold Hoffman
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Feb 18, 2002
I have the following table:
CREATE TABLE ITEMS ([ITEMID] int, [itRULE] varchar(1))
INSERT INTO ITEMS (ITEMID, itRULE) VALUES (11, 3)
INSERT INTO ITEMS (ITEMID, itRULE) VALUES (12, 3)
INSERT INTO ITEMS (ITEMID, itRULE) VALUES (21, 2)
INSERT INTO ITEMS (ITEMID, itRULE) VALUES (22, 2)
INSERT INTO ITEMS (ITEMID, itRULE) VALUES (31, 1)
INSERT INTO ITEMS (ITEMID, itRULE) VALUES (32, 1)
INSERT INTO ITEMS (ITEMID, itRULE) VALUES (41, 0)
INSERT INTO ITEMS (ITEMID, itRULE) VALUES (42, 0)
-- Those works and gives me 11,12,21,22
SELECT ITEMID FROM ITEMS WHERE itRULE IN (2,3)
SELECT ITEMID FROM ITEMS WHERE itRULE IN ('2','3')
-- This doesn't works
declare @Rule varchar(10)
set @Rule='2,3'
SELECT ITEMID FROM ITEMS WHERE itRULE IN (@Rule)
Any idea?
I don't mind to change the data type if it works.
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Aug 28, 2007
I have two tables in which I need to select data from and I don't know what construct to use. The two tables are SY and MV. SY contains stocks and MV contains a log of all price changes of these stocks. I need to produce a report of price changes between the latest price and the previous price and take the difference between the two. I'm using MSSQL. Here are the important fields in my tables:
SY - SY.SYID
MV - MV.SYID
MV - MV.PRICE
MV - MV.DATE
Here is what I have so far:
Code:
SELECT
sy.syid,
sy.sycode,
mv.price,
(SELECT TOP 1(mv.price) FROM MV, SY WHERE mv.syid = sy.syid AND mv.date < '8/27/2007' AND sy.ACTIVE = '1' ORDER BY mv.date DESC) AS lastprice,
(mv.price - (SELECT TOP 1(mv.price) FROM MV, SY WHERE mv.syid = sy.syid AND mv.date < '8/27/2007' AND sy.ACTIVE = '1' ORDER BY mv.date DESC)) AS diff,
(mv.price - (SELECT TOP 1(mv.price) FROM MV, SY WHERE mv.syid = sy.syid AND mv.date < '8/27/2007' AND sy.ACTIVE = '1' ORDER BY mv.date DESC)) /
(SELECT TOP 1(mv.price) FROM MV, SY WHERE mv.syid = sy.syid AND mv.date < '8/27/2007' AND sy.ACTIVE = '1' ORDER BY mv.date DESC) * 100 AS percentdiff,
mv.date
FROM
mv,
sy
WHERE
mv.syid = sy.syid
AND mv.date = '8/27/2007'
AND sy.ACTIVE = '1'
ORDER BY
sy.syid,
mv.date
DESC
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May 20, 2008
Hi,
I have a query which contains 2 subselects joined with a union all. The select for each is just a count, so I'm only returning 2 rows. I then want to be able to perform a calculation between these 2 results... ie divide one by the other to get the percentage.
The only way I could think of doing that was make the whole query a subselect of another query where I could then perform the calculation in the new select statement, however it doesn't like this. I just get incorrect syntax near the closing bracket of the from section.
Any ideas? Thanks!
SELECT *
FROM
(SELECT count(t0.product)
FROM
(SELECT t0.packslip ,
t1.date_upld ,
t0.product AS product ,
t0.qty_topick as topick ,
t0.qty_picked as picked ,
t0.qty_topick - t0.qty_picked as shorted,
(t0.qty_picked / t0.qty_topick) * 100 as linefill
FROM rbeacon.dbo.shipline2 t0
INNER JOIN rbeacon.dbo.shiphist t1
ON t0.packslip = t1.packslip
WHERE t1.date_upld = CONVERT(VARCHAR(10), GETDATE()-3, 101)) t0
UNION ALL
SELECT count(t1.product)
FROM
(SELECT t0.packslip ,
t1.date_upld ,
t0.product AS product ,
t0.qty_topick as topick ,
t0.qty_picked as picked ,
t0.qty_topick - t0.qty_picked as shorted,
(t0.qty_picked / t0.qty_topick) * 100 as linefill
FROM rbeacon.dbo.shipline2 t0
INNER JOIN rbeacon.dbo.shiphist t1
ON t0.packslip = t1.packslip
WHERE t1.date_upld = CONVERT(VARCHAR(10), GETDATE()-3, 101)
AND t0.qty_picked <> t0.qty_topick) t1) t2
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Aug 31, 2007
Hello,I have a problem with a subselect I use in a stored procedure:UPDATE #TEMP_TABLESET P_ID_1=(SELECT top 1 b.P_ID_1 from #TEMP_TABLE b whereb.ID=PARENT_ID),P_ID_2=PARENT_ID,P_ID_3=IDWHERE PARENT_ID IN (SELECT P_ID_2FROM #TEMP_TABLE b)So the subselect is (SELECT top 1 b.P_ID_1 from #TEMP_TABLE b whereb.ID=PARENT_ID), and it returns NULL. The cause of that is mostprobably the fact that I try to link ID from inner table b withPARENT_ID from the outer table. I thought it had to be done this way,but obviously not. Can somebody help me with this syntax problem?Thx,Bart
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Jul 20, 2005
Not sure if this is the right group to post this to but.This is the current query that I have.select tableA.id,tableB.artist,tableB.image,from tableA,tableB wheretableA.image = tableB.image AND tableB.price >0 AND tableB.price < 20order by tableB.price DESC'What I need is, for each row returned I need information from a thirdand fourth table. tableC, and tableD.tableC has information ( the tableA.id = tableC.eventId) that I need toobtain tableC.accountId = tableD.accountId in order do select thethe binding information in tableD between a Vendor(name,address..etc..)and tableB.imageAny help would be greatly appreciated.
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Jul 20, 2005
I have a stored procedure what produces N number of rows.The rows are ordered by a cataegoryType as followscatAcatBcatCWhat is needed to do on the C++ code side is break these out intotheir respective categories by iterating through the rows and checkingthe category type. Is there a way to let the DB do this via some sort ofsubselect on the rows returned via the stored procedure.Thanks in advance.
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May 31, 2007
I have a sqldatasource, and on the selectcommand I'm trying to use a case statement with a subselect. The case statement works fine without the subselect, but I'm trouble getting it to work with the case statement. Could you help me with the syntax? ThanksSelectCommand="
SELECT DISTINCT RecipeID, Title
FROM [Recipes]
WHERE
(CASE WHEN @Type='Appetizer' THEN Appetizer
WHEN @Type='Pies' THEN
(Select Distinct RecipeID, Title From Recipes
WHERE Title like '%Pie%')
WHEN @Type='Beverages' THEN Beverage
WHEN @Type='Dessert' THEN Dessert
WHEN @Type='Kids' THEN Kids
WHEN @Type='Side' THEN Side
WHEN @Type='Soup' THEN Salad
WHEN @Type='Main' THEN Main
WHEN @Type='Breakfast' THEN Breakfast
END) = 1"
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Feb 27, 2006
Im not sure the best way to go about doing this
i want to pass 2 values to the procedure
one passed value will be a direct insert value
the other passed value will be used within a subselect
and the result from the subselct will be the second inserted value.
Code:
Create procedure InsertSubSelect
(
@Value1 nvarchar(50),
@Value2 nvarchar(50)
)
AS
INSERT INTO Mytable (field1, field2)
VALUES (@Value1,
(select Value2
from Mytable2
where Value2 = @Value2 ) )
Go
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Jul 20, 2005
Help!I'm trying to understand the new ANSI join syntax (after many years ofcoding using the old style). I am now working with an application that onlyunderstands ANSI syntax so I am struggling.My first (old style syntax) SQL statement below produces 60 rows:SELECT A1.CONTACTID, A1.LASTNAME, A1.FIRSTNAME, A1.ACCOUNT,A6.CITY, A6.STATE, A1.WORKPHONE, A1.FAX, A1.EMAILFROM CONTACT A1,ADDRESS A6WHERE A1.ADDRESSID=A6.ADDRESSIDAND A1.CONTACTID IN(SELECT A4.CONTACTIDFROM CONTACT_LEADSOURCE A4,LEADSOURCE A5WHERE A4.LEADSOURCEID = A5.LEADSOURCEIDAND A5.DESCRIPTION = 'some_description' )AND A1.CONTACTID IN(SELECT A2.CONTACTIDFROM TICKET A2,ENROLLHX A3,EVENT A7WHERE A3.STATUS IN ('R', 'Confirmed')AND A2.TICKETID = A3.EVXEVTICKETIDAND A3.EVENTID = A7.EVENTIDAND A7.CODE IN('AHS00','AHS01','AHS02','AHS03','AHS04','AHS98',' AHS99'))ORDER BY A1.LASTNAME ASCI am trying to convert this to the newer ANSI sytax. My second SQL statementbelow produces 67 rows (duplicates):SELECT A1.CONTACTID, A1.LASTNAME, A1.FIRSTNAME, A1.ACCOUNT,A6.CITY, A6.STATE, A1.WORKPHONE, A1.FAX, A1.EMAILFROM CONTACT A1JOIN ADDRESS A6 ON (A1.ADDRESSID=A6.ADDRESSID)JOIN( SELECT C.CONTACTIDFROM CONTACT CJOIN CONTACT_LEADSOURCE A4 ON (C.CONTACTID= A4.CONTACTID)JOIN LEADSOURCE A5 ON (A4.LEADSOURCEID =A5.LEADSOURCEIDAND A5.DESCRIPTION ='some_description' )) AS C1 ON C1.CONTACTID = A1.CONTACTIDJOIN(SELECT C2.CONTACTIDFROM CONTACT C2JOIN TICKET A2 ON (C2.CONTACTID =A2.CONTACTID)JOIN ENROLLHX A3 ON (A2.TICKETID =A3.TICKETID AND A3.STATUS in ('R', 'Confirmed'))JOIN EVENT A7 ON (A3.EVENTID = A7.EVENTIDAND A7.CODE IN ('AHS00','AHS01','AHS02','AHS03','AHS04','AHS98',' AHS99')))AS C3 ON C3.CONTACTID = A1.CONTACTIDCan anyone shed some light on what I am missing?cheers,Norm
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Apr 17, 2007
Hello
I am running an script and the following sentence throws and error because the DTC service is not running in the Remote Server:
insert into MyLocalTable
execute synonym_MyRemoteProcedure @SomeParameter
Since a transaction is not declared within the script, why is the DTC required?
How can I avoid the usage of the DTC? Is there a way to say "this code is not within a distributed transaction"?
Thanks a lot.
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Apr 8, 2008
Here is a simplified example of a problem I am facing.
I have 2 tables: Tasks and Employees.
Tasks:
(Task_ID, Task_Name, Task_Type, Task_Requirement, Employee_ID)
Employees:
Emp_ID, Emp_Name, Emp_Specialty, Emp_Task_Cnt, Max_Task_Cnt
Requirements: Write a MS SQLServer 2000 Storeed Procedure to:
1. Update the Tasks table by assigning the task to an Employee.
2. Incrememnt the employee's Emp_Task_Cnt for each Task assigned.
3. Match the Employee to the Task by matching the Task_Requirement to the Emp_Specialty.
4. Do not exceed the employee's Max_Task_Cnt.
I have a working solution to the requirements, but it involves using cursor logic. For all the obvious reasons, I wanted to avoid using a cursor (or cursor-like looping structure) but could not figure out any other way to avoid processing the Task table one record at a time because of the: "4. Do not allow an Employee's Task_Cnt to exeed the Max_Task_Cnt."
Q: Is there a way to do this without using a cursor and still meet all of the requirements?
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May 9, 2007
I'm trying to performance tune a procedure and am sort of being thwarted by caching.
When I first run the procedure, it takes a few seconds which is too long in this case. Subsequent executions in Management Studio are nearly instantaneous, though, which I imagine is due to caching and does not reflect the behavior of the procedure in production.
Is there a way to disable caching so that each execution of the procedure in Management Studio will be consistent and reflect the "first run" performance?
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Sep 7, 2007
This query uses a cursor to fetch a parameter and pass it to another Stored proc. Is there a straightforward way to do this without using a cursor?
declare @deleteunassigned int
declare cur_unassigned cursor for select distinct a.cust_cont_pk
from cust_cont a, cont_fold_ass b (NOLOCK)
where a.cust_cont_pk != b.CUST_CONT_PK
open cur_unassigned
fetch next from cur_unassigned into @deleteunassigned
while @@fetch_status = 0
begin
exec spDeleteCustContbypk @deleteunassigned
fetch next from cur_unassigned into @deleteunassigned
end
close cur_unassigned
deallocate cur_unassigned
GO
declare @deleteunassigned int
declare cur_unassigned
cursor for
SELECT DISTINCT a.cust_cont_pk
FROM cust_cont a,
cont_fold_ass b (NOLOCK)
WHERE a.cust_cont_pk != b.CUST_CONT_PK
open cur_unassigned
FETCH NEXT FROM cur_unassigned INTO @deleteunassigned
while @@fetch_status = 0
begin
exec spDeleteCustContbypk @deleteunassigned
FETCH NEXT FROM cur_unassigned INTO @deleteunassigned
end
close cur_unassigned
deallocate cur_unassigned
GO
Future guru in the making.
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Jul 20, 2005
Using small stored procs or sp_executesql dramatically reduces the number ofrecompiles and increases the reuse of execution plans. This is evident fromboth the usecount in syscacheobjects, perfmon, and profiler. However I'm ata loss to determine what causes a compilation. Under rare circumstances theusecount for Compiled Plan does not increase as statements are run. Seemsto correspond to when there is no execution plan. It would seem to me thatcompilation is a resource intensive task that if possible (data and schemaare not changing) should be held to a minimum.How does one encourage the reuse of compile plans?Is this the same as minimizing compilation?Looks like some of this behavior is changing in SQL 2005....Thanks,Danny
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May 4, 2006
I have a stored procedure spUpdateClient, which takes as params a number of properties of a client application that wants to register its existence with the database. The sp just needs to add a new row or update an existing row with this data.
I tried to accomplish this with code somethign like this. (The table I'm updating is called Client, and its primary key is ClientId, which is a value passed into the sp from the client.)
IF (SELECT COUNT(ClientId) FROM Clients WHERE ClientId=@ClientId) = 0
BEGIN
-- client not found, create it
INSERT INTO Clients (ClientId, Hostname, Etc)
VALUES (@ClientId, @Hostname, @Etc)
END
ELSE
BEGIN
-- client was found, update it
UPDATE Clients
SET Hostname=@Hostname, Etc=@Etc
WHERE ClientId=@ClientId
END
But the client apps call this every second or so, so soon enough I started getting primary key violations. It looks like one client would make two calls nearly at the same time, both would get a 0 value on the SELECT line, so both would try to insert a new row with the same ClientId. No good.
So then I added
SET TRANSACTION ISOLATION LEVEL SERIALIZABLE
BEGIN TRANSACTION
at the top, and a COMMIT at the bottom. I thought the first one in would get to run the whole sp, and the next one in would have to wait for the first to be done.
Instead I'm now getting deadlock errors.
If I understand the docs right, that's because the exclusive lock is not placed on the Clients table until the INSERT happens, not at the SELECT. So when two calls to the sp happen at nearly the same time (call them A and B), A does the SELECT and that locks Clients so nobody else can update it. Then B does the SELECT, locking Clients so nobody else (including A) can update it. Now A needs to exclusively lock Clients to do its INSERT, but B still has that read lock on it, and they're deadlocked.
I could catch the deadlock in my client app after SQL Server kills one of the transactions, but it seems to me there should be some way to set a lock at the top of the sp that says "nobody else can enter this sp until I exit it". Any such thing?
Thanks.
Nate Hekman
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Sep 7, 2007
Hello.
I have been developing a small site that has two backend SQL Server databases. One for my application data and one for the ASPNETDB database that is created by the ASP .NET Configuration utility.
Is it possible to configure the ASP .NET Configuration tool to use my custom database instead of creating a second database called ASPNETDB?
Thanks in advance.
Kev
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Aug 5, 2004
I am exclusively using Stored Procedures to access the database, i.e. there are no Ad-Hoc SQL statements anywhere in the C# code. However, one thing I need to be able to do is to allow filtering for data grids on my ASP.NET page. I want to do the filtering in the Stored Procedure using Dynamic SQL to set the WHERE clause. However, one fear of mine is SQL injection from the client. How can I avoid arbitrary SQL injection, yet still allow for a dynamic WHERE clause to be passed into the stored procedure?
Jason Pacheco
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Oct 8, 2007
MS SQL Server 2005
I have a table in our system that hold temporary data for doing calculations. It will process several million records in it. each time they forecast our products.....
Is there any way to have the SQL server NOT add these transactions to the transaction log, since I'm going to wipe the data anyway? I'd like to be able to pick and choose the tables that are 'backed up' into the transaction log...
Please advice. Thanks
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Mar 18, 2008
I am trying to figure out an efficient way of comparing two tables of identical structure and primary keys only I want to do a join where one of the tables reveals values for records which have been modified and/or updated.
To illustrate, I have two tables in the generic form:
id-dt-val
For which the 'val' in table 2 could be different from the 'val' in table 1 - for a given id-dt coupling that are identical in both tables.
Does anyone know of an efficient way I could return all id-dt couplings in table 2 which have values that are different from those with the same id-dt couplings in table 1?
NOTE: I am asking this because I am trying to avoid explicit comparisons between the 'val' columns. The tables I am working with in actuality have roughly 900 or so columns, so I don't want this kind of a monster query to do (otherwise, I would simply do something like where a.id = b.id and a.dt = b.dt and a.val <> b.val) - but this won't do in this case.
As a sample query, I have the following script below. When I attempt the where not exists, as you might expect, I only get the one record in which the id-dt coupling is different from those in table 1, but I'm not sure how to return the other records where the id-dt coupling is the same in table 1 but for where modified values exist:
create table #tab1
(
id varchar(3),
dt datetime,
val float
)
go
create table #tab2
(
id varchar(3),
dt datetime,
val float
)
go
insert into #tab1
values
('ABC','01/31/1990',5.436)
go
insert into #tab1
values
('DEF','01/31/1990',4.427)
go
insert into #tab1
values
('GHI','01/31/1990',7.724)
go
insert into #tab2
values
('XYZ','01/31/1990',3.333)
go
insert into #tab2
values
('DEF','01/31/1990',11.111)
go
insert into #tab2
values
('GHI','01/31/1990',12.112)
go
select a.* from #tab2 a --Trouble is, this only returns the XYZ record
where not exists
(select b.* from #tab1 b where a.id = b.id and a.dt = b.dt)
go
drop table #tab1
drop table #tab2
go
I really dont' want to have to code up a loop to do the value by value comparison for inequality, so if anyone knows of an efficient set-based way of doing this, I would really appreciate it.
Any advice appreciated!
-KS
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Jul 20, 2005
The C++ application calls the database to look up property data. Onetroublesome query is a function that returns a table, finding data whichis assembled from four or five tables through a view that has a join,and then updating the resulting @table from some other tables. Thereare several queries inside the function, which are selected accordingto which parameters are supplied (house #, street, zip, or perhaps parcelnumber, or house #, street, town, city,...etc.). If a lot of parametersare provided, and the property is not in the database, then several queriesmay be attempted -- it keeps going until it runs out of queries or findssomething. Usually it takes ~1-2 sec for a hit, but maybe a minute insome failure cases, depending on the distribution of data. (~100 milproperties in the DB) Some queires operate on the assumption the input datais slightly faulty, and take relatively a long time, e.g., if WHEREZIP=@Zip fails, we try WHERE ZIP LIKE substring(@Zip,1,3)+'%'. Whileall this is going on the application may decide the DB is never going toreturn, and time out; it also seems more likely to throw an exception thelonger it has to wait. Is there a way to cause the DB function to fail ifit takes more than a certain amount of time? I could also recast it asa procedure, and check the time consumed after every query, and abandonthe search if a certain amount of time has elapsed.Thanks in advance,Jim Geissman
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Jun 8, 2007
What is the experession to evaluate if the result of a computation would be a divide by zero error for a text box in report?
IIF(divide by zero, display nothing, else display computed result)...??
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Dec 4, 2007
I have a Master/Detail table setup - let's call the master "Account" and the detail "Amount". I also have a "black box" stored procedure (BlackBox_sp) which carries out a lot of complex processing.
What I need to do is, for each Account, I need to iterate thtough it's Amount records and call the black box each time. Once I've finished going through all the Amount records, I need to call the black box again once for the Account. This must be done with the Account & Amount rows in a specific order.
So I have something along the lines of
Code Block
DECLARE Total int
DECLARE Account_cur
OPEN Account_cur
FETCH NEXT FROM Account_cur
WHILE FETCH_STATUS = 0
BEGIN
SET Total = 0
DECLARE Amount_cur
OPEN Amount_cur
FETCH NEXT FROM Amount_cur
WHILE FETCH_STATUS = 0
BEGIN
SET Total = Total + Amount
EXEC BlackBox_sp (Amount)
END
CLOSE Amount_cur
EXEC BlackBox_sp (Total)
END
CLOSE Account_cur
Any tips on another approach would be appreciated given the contraints I have.
Greg.
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Jun 15, 2015
I'm running the following test query on a single table:
SELECT sph.datestamp, sph.stocksymbol, sph.closing, DATENAME(dw, sph.datestamp),
CASE DATENAME(dw, sph.datestamp)
WHEN 'Monday' then 'Monday'
ELSE (SELECT CAST(sph2.datestamp AS nvarchar) FROM BI_Test.dbo.StockDB AS sph2 WHERE sph2.DateStamp = DATEADD(d, -1, sph.datestamp) AND sph2.StockSymbol = 'NYA')
END AS TestCase,
[Code] ....
And here's an example of the output I'm getting:
Why the exact same subquery in the THEN of the second CASE statement is returning NULL when the first one completes as expected?
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Mar 27, 2008
I have web site when people orders through website at same time, a problem can be arrive when allocating next primary key value to new record, using maximum number of records +1
how to avoid this problem and insert to sql server
please give me your ideas
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Mar 7, 2001
Hi there,
I'm using a query to fetch data from a table where one of the criteria is IN(...) clause for the key column of the table.Now the data being retrieved is ordered by the key column of the table even though I haven't specified any order by clause.
I want to know if there a way in which the data being fetched is in the order of my IN(...) clause.
Thanx
Aby
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