Intel P4 3.0Ghz dual core, 512MB DDR memory, and EIDE HDD
15.4GB mdf file with 19 million rows.
How will lessen the time to get a result from a query for this database without upgrading hardware components?
Index, tuning, multiple filegroups, etc.? Btw, this will no longer get additional rows.
THanks.
Aside from indexes, will it help if I use multiple filegroups to improve the time needed to query millions of records?
View 2 Replies View RelatedI am using SQL Server 2012 to improve the running time on a user defined function named "udf_GetPackagesHirearchyofNetwork_NEW". This function takes a little bit long time to run. It is called in .NET application using Microsoft Entity Framework version 5.
CREATE Function [dbo].[udf_GetPackagesHirearchyofNetwork_NEW]
(
@networkItemid int
)
RETURNS @PackageTable TABLE
(
Id int identity (1,1),
ContentItemTargetMapID int,
ContentItemMapID int,
[code]....
I have a pretty good db server with four CPUs, it has not any other loads on it, but the following query takes 4ms to return. I use the syscolumns this way quite often, I am not sure why it takes it that long to return, any idea?
select 'master',id,colid,name,xtype,length,xprec,xscale,status from [ablestatic].[dbo].syscolumns where id=(select id from [ablestatic].[dbo].sysobjects where name='link_data_ezregs')
Hi,
I have this SQL query that can take too long time, up to 1 minute if table contains over 1 million rows. And if the system is very active while executing this query it can cause more delays I guess.
select
distinct 'CONV 1' as Conveyour,
info as Error,
(select top 1 substring(timecreated, 0, 7) from log b where a.info = b.info order by timecreated asc) as Date,
(select count(*) from log b where b.info = a.info) as 'Times occured'
from log a where loggroup = 'CSCNV' and logtype = 4
The table name is LOG, and I retrieve 4 columns: Conveyour, Error, Date and Times occured. The point of the subqueries is to count all distinct post and to retrieve the date of the first time the pst was logged. Also, a first and last date could be specified but is left out here.
Does anyone knows how I can improve this SQL query?
Best /M
I have a table called work_order which has over 1 million records and acontractor table which has over 3000 records.When i run this query ,it takes long time since its grouping bycontractor and doing multiple sub SELECTs.is there any way to improve performance of this query ??-------------------------------------------------SELECT ckey,cnam,t1.contractor_id,count(*) as tcnt,(SELECT count(*) FROM work_order t2 WHEREt1.contractor_id=t2.contractor_id and rrstm=1 and rcdt is NULL) as r1,(SELECT count(*) FROM work_order t3 WHEREt1.contractor_id=t3.contractor_id and rrstm=2 and rcdt is NULL) as r2,(SELECT count(*) FROM work_order t4 WHEREt1.contractor_id=t4.contractor_id and rrstm=3 and rcdt is NULL) as r3,SELECT count(*) FROM work_order t5 WHEREt1.contractor_id=t5.contractor_id and rrstm=4 and rcdt is NULL) as r4,(SELECT count(*) FROM work_order t6 WHEREt1.contractor_id=t6.contractor_id and rrstm=5 and rcdt is NULL) as r5,(SELECT count(*) FROM work_order t7 WHEREt1.contractor_id=t7.contractor_id and rrstm=6 and rcdt is NULL) as r6,SELECT count(*) FROM work_order t8 WHEREt1.contractor_id=t8.contractor_id and rcdt is NULL) as open_count,(SELECT count(*) FROM work_order t9 WHEREt1.contractor_id=t9.contractor_id and vendor_rec is not NULL) asAck_count,(SELECT count(*) FROM work_order t10 WHEREt1.contractor_id=t10.contractor_id and (rtyp is NULL or rtyp<>'R') andrcdt is NULL) as open_norwoFROM work_order t1,contractor WHEREt1.contractor_id=contractor.contractor_id andcontractor.tms_user_id is not NULL GROUP BYckey,cnam,t1.contractor_id ORDER BY cnam*** Sent via Developersdex http://www.developersdex.com ***Don't just participate in USENET...get rewarded for it!
View 2 Replies View RelatedHey guys,Here's my situation:I have a table called lets say 'Tree', as illustred bellow:Tree====TreeId (integer)(identity) not nullL1(integer)L2(integer)L3(integer)....L10(integer)The combination of the values of L1 thru L10 is called a "Path" , andL1 thru L10 values are stored in a second table lets say called'Leaf':Leaf====LeafId (integer)(identity) not nullLeatText varchar(2000)Here's my problem:I need to lookup for a given keyword in each path of the tree table,and return each individual column for the paths that match thecriteria. Here's the main idea of how I have this now.SELECT TreeId,L1,L2,...,L10, GetText(L1) + GetText(L2) as L2text + ...+ GetText(L10) AS PathTextINTO #tmp FROM Tree //GetText is a lookup function for the Leaf tableSELECT L1,GetText(L1),L2,GetText(L2),...,L10,GetText(L10) FROM #tmpWHERECharIndex(@keyword,a.pathtext) > 0Does anyone would know a better,smart, more efficient way toaccomplish this task? :)Thks,
View 1 Replies View RelatedSQL Experts,
I'm facing a performance issue with the following query...
The Output of the following Query is 184 Records and it takes 2 to 3 secs to execute the query.
SELECT DISTINCT Column1 FROM Table1 (NOLOCK) WHERE Column1 NOT IN
(SELECT T1.Column1 FROM Table1 T1(NOLOCK) JOIN Table2 T2 (NOLOCK)
ON T2.Column2 = T1.Column2 WHERE T2.Column3= <Value>)
Data Info.
No of records in Table1 --> 1377366
No. of distinct records of Column1 in Table1 --> 33240
Is there any way the above query can be rewritten to improve the performance, which should take less than 1 sec...
(I'm using DISTINCT because there are Duplicate records of Column1 inTable1 )
Any of your help in this regard will be greately appreciated.
--
ash
now i want to get results from server tables, but i found it is very slow, for example :
select Coalesce(T1.Name, T2.Name, T3.Name), T1.M1, T2.M2, T3.M3
from T1
full outer join T2
on Coalesce(T1.Name, NULL) = T2.Name
full outer join T3
on Coalesce(T1.Name, T2.Name) = T3.Name
in Tables i have builded index for name, but when every table have 20000 records, the sql above is very slow, is there other method to improve the query speed ?
Thks
Hi,
I have database D1 which contains 5 million users and one more database D2 having 95k Users.
i wanted to insert common users into new database D3 based on filter which is Phone number and is unique value. Below is the structure of my tables in D1 and D2:
D1(database)
UserProfiles(Table)
UserId (Column Name)
UserProfiledata (Column Name)
D2 (database)
Alerts (Table)
PhoneNumbers (ColumnName - Unique)
Now userProfiles table contains data in string format as below:
User.state AA User.City CC User.Pin 1234 User.phonenumber 987654
so iam parsing for each user using cursor and writing phone numbers into some temp table and wanted to query D2 database to verify whether this phone number exists in Alerts Table of D2 database.
can anyone please suggest on how i can go ahead with this and also help me on how to improve perfomance.
Thanks,
-Veera
Hi ,
I have
SQL Server with 2 processors , 2 GB memory and RAID 5
40 GB db (Pricing ) working with 3rd party application.
in db Pricing
table A = 180000 rows (20 column and 5 indexes incling clustered primary)
table B = 1789000 rows (25 coumns and 6 indexes incling clustered primary )
table C = 10005 rows (15 columns and 4 indexes incling clustered primary)
Users start complaining about poor performance when selecting data from tables A,B and C
I used profier to capture all queries running with A,B and C tables
where duration more then 1 second.
Profiler shows 0 cpu and very high read for all capured queries
I run INDEXDEFRAG on tables A,B and C
then rerun Profiler
No changes at all in profiler reading
same low CPU and high read
If the is no changes in performance after INDEXDEFRAG can I conclude following
everything has been done to optimize tables A,B and C , query code or table structure should be modified?
or
any other improvment could be done without modifing code?
Thank you
Alex
I have a view which uses UNION of two tables. First table has a 1.5 Million records and the second one has 40,000 records. When I query the view with a column (that is indexed in both tables) in the where clause, it's taking taking 3 Minutes to give the result. The column is of DateTime data Type. Any ideas as to how to improve the query performance ???
TIA
-XLDB
Hello,
I have the following setup and I would appreciate any help in improving
the performance of the query.
BigTable:
Column1 (indexed)
Column2 (indexed)
Column3 (no index)
Column4 (no index)
select
[time] =
CASE
when BT.Column3 = 'value1' then DateAdd(...)
when BT.Column3 in ('value2', 'value3') then DateAdd(...)
END,
Duration =
CASE
when BT.Column3 = 'value1' then DateDiff(...)
when BT.Column3 in ('value2', 'value3') then DateDiff(ss,
BT.OrigTime, (select TOP 1 X.OrigTime from BigTable X where X.Column1 >
BT.Column1 and X.Column3 <> 'value4' order by X.Column1 ))
END,
FROM
BigTable BT where BT.Column3 = 'value1' OR (BT.Column3 in ('value2',
'value3') and BT.Column4 <> (select X.Column4 from BigTable X where
X.Column1 = BT.Column1 and X.Column3 = 'Value1'))
Apart from the above mentioned, there are a few more columns which are
just a part of select statement and are not in any condition statments.
The BigTable has around 1 Mil records and the response time is very
poor, it takes around 3 mins to retrieve the records (which would be
around 500K)
With the Statistics ON,
I get the following:
Table 'BigTable'. Scan count 2, logical reads 44184, physical reads 0,
read-ahead reads 0.
Table 'WorkTable'. Scan count 541221, logical reads 4873218, physical
reads 0, read-ahead reads 0.
Is there any way to increase the performance, so that I can get the
result under 1 minute?
Any help would be appreciated.
P.S: I tried indexing the Column3, but no improvement.
-SR
Hello,I have the following setup and I would appreciate any help in improvingthe performance of the query.BigTable:Column1 (indexed)Column2 (indexed)Column3 (no index)Column4 (no index)select[time] =CASEwhen BT.Column3 = 'value1' then DateAdd(...)when BT.Column3 in ('value2', 'value3') then DateAdd(...)END,Duration =CASEwhen BT.Column3 = 'value1' then DateDiff(...)when BT.Column3 in ('value2', 'value3') then DateDiff(ss,BT.OrigTime, (select TOP 1 X.OrigTime from BigTable X where X.Column1 >BT.Column1 and X.Column3 <> 'value4' order by X.Column1 ))END,FROMBigTable BT where BT.Column3 = 'value1' OR (BT.Column3 in ('value2','value3') and BT.Column4 <> (select X.Column4 from BigTable X whereX.Column1 = BT.Column1 and X.Column3 = 'Value1'))Apart from the above mentioned, there are a few more columns which arejust a part of select statement and are not in any condition statments.The BigTable has around 1 Mil records and the response time is verypoor, it takes around 3 mins to retrieve the records (which would bearound 500K)With the Statistics ON,I get the following:Table 'BigTable'. Scan count 2, logical reads 44184, physical reads 0,read-ahead reads 0.Table 'WorkTable'. Scan count 541221, logical reads 4873218, physicalreads 0, read-ahead reads 0.Is there any way to increase the performance, so that I can get theresult under 1 minute?Any help would be appreciated.P.S: I tried indexing the Column3, but no improvement.
View 1 Replies View RelatedHI,
I ran a select * from customers where state ='va', this is the result...
(29 row(s) affected)
The following file has been saved successfully:
C:outputcustomers.rpt 10826 bytes
I choose Query select to a file
then when I tried to open the customer.rpt from the c drive I got this error message. I am not sure why this happend
invalid TLV record
Thanks for your help
Ali
As the topic suggests I need the end results to show a list of shows and their dates ordered by date DESC.
Tables I have are structured as follows:
SHOWS
showID
showTitle
SHOWACCESS
showID
remoteID
VIDEOS
videoDate
showID
SQL is as follows:
SELECT shows.showID AS showID, shows.showTitle AS showTitle,
(SELECT MAX(videos.videoFilmDate) AS vidDate FROM videos WHERE videos.showID = shows.showID)
FROM shows, showAccess
WHERE shows.showID = showAccess.showID
AND showAccess.remoteID=21
ORDER BY vidDate DESC;
I had it ordering by showTitle and it worked fine, but I need it to order by vidDate.
Can anyone shed some light on where I am going wrong?
thanks
I have a pretty large DB and a fairly complex query. If I drop buffers and clear cache the query runs in 20 seconds returning 25K rows. Subsequent runs are 2 seconds. Is this the result of the results being cached, execution being cached, other? Are there good ways to close the gap between the initial and later runs? Does the cache stay present until the service restarts or does SQL recycle the memory and if so, based on what criteria?
View 5 Replies View RelatedI am querying a table with multiple rows
SELECT caseId, Name ,CompletedDate
FROM TableZ
the number of results per CaseID are varable some have 1 record others up to 36 records..I need to pivot the results based off of the competed date
Name has 20 distinct values but we can have diplicates...so something like
Case Name Date
1 This 2015-01-01
1 That 2015-01-03
2 That 2013-01-01
2 Then 2014-12-03
2 This 2015-01-01
2 There 2015-04-03
3 This 1999-01-01
3 That 2001-01-02
3 This 2006-01-01
looks like this
1 This That
2 That Then This There
3 This That This
hi to every one
and again i say my question
for the first time i thought if i ask my question from this forum i can give my answer exactly
but with these answers i see it was just a dream .
one person said you can see your answer in book with this title "the datamining with sql 2005 "but i cant find my request and then said you can find in datamning sql2005.com and in this site i cant find a sample about a form that i can show my result of prediftion with time series
i dont know how can i earn this code .and a sample about that .please please if every one can answer me ,answer with descripstion about code .i just want codes for connecting between c# and analysis serveice and a description about quality of this code,that means this code, how do it work?
I have a query to check the records of job has received after 4pm Monday to Friday and it has completed before 9am next day and also weekend it should be Friday after 4pm and before Monday 10am for particular financial year period. I have my job table which has full date but it doesn't show the date exactly Monday to Friday it shows only as 12-12-2014 like that.
View 2 Replies View Related hi
i have aques tion about mining model and time series after predicting
how can i show the result of the prediction in the c# form
and why i cant use the all of the prediction function in the mining
model prediction for time series and how i can see the script of the
building mining model in the model because i can see just the wizard
of the model and how can i undrestand othe about time series formula
in the chart
thanks alot if answer me
SELECT
CONVERT(VARCHAR(10),attnc_chkin_dt,101) as INDATE,
CONVERT(VARCHAR(10),attnc_chkin_dt,108) as TimePart
FROM pmt_attendance
o/p
indate 04/18/2015
time part :17:45:00
I need to convert this 17:45:00 to 12 hours date format...
Hi,
I have a table which has a few fields, one being "datetime_traded". I need to write a query which returns the row which has the closest time (down to second) given a date/time. I'm using MS SQL.
Here's what I have so far:
Code:
select * from TICK_D
where datetime_traded = (select min( abs(datediff(second,datetime_traded , Convert(datetime,'2005-05-30:09:31:09')) ) ) from TICK_D)
But I get an error - "The conversion of a char data type to a datetime data type resulted in an out-of-range datetime value.".
Does anyone know how i could do this? Thanks a lot for any help!
I have two tables .. in one (containing user data, lets call it u).The important fields are:u.userName, u.userID (uniqueidentifier) and u.workgroupID (uniqueidentifier)The second table (w) has fieldsw.delegateID (uniqueidentifier), w.workgroupID (uniqueidentifier) The SP takes the delegateID and I want to gather all the people from table u where any of the workgroupID's for that delegate match in w. one delegateID may be tied to multiple workgroupID's. I know I can create a temporary table (@wgs) and do a: INSERT INTO @wgs SELECT workgroupID from w WHERE delegateID = @delegateIDthat creates a result set with all the workgroupID's .. this may be one, none or multipleI then want to get all u.userName, u.userID FROM u WHERE u.workgroupIDThis query works on an individual workgroupID (using another temp table, @users to aggregate the results was my thought, so that's included) INSERT INTO @users SELECT u.userName,u.userID FROM tableU u LEFT JOIN tableW w ON w.workgroupID = u.workgroupID WHERE u.workgroupID = @workGroupIDI'm trying to avoid looping or using a CURSOR for the performance hit (had to kick the development server after one of the cursor attempts yesterday)Essentially what I'm after is: SELECT u.userName,u.userID
FROM tableU u
LEFT JOIN tableW w ON w.workgroupID = u.workgroupID
WHERE u.workgroupID = (SELECT workgroupID from w WHERE delegateID = @delegateID) ... but that syntax does not work and I haven't found another work around yet.TIA!
When I run query in excel it gives result with different column sequence. The same query gives result with different column sequence when used in query analyzer or VBA Macro. E.g., Select * from ABC.
result in Excel 2003 SQL OLE DB query
col-A col-B col-C
values...
Result with Query Analyzer and VBA Macro
col-c col-B col-A
values...
I hope I am not asking about something that has been done before, but Ihave searched and cannot find an answer. What I am trying to do is torun a query, and then perform some logic on the rowcount and thenpossibly display the result of the query. I know it can be done withADO, but I need to do it in Query Analyzer. The query looks like this:select Varfrom DBwhere SomeCriteriaif @@Rowcount = 0select 'n/a'else if @@Rowcount = 1select -- this is the part where I need to redisplay the resultfrom the above queryelse if @@Rowcount > 1-- do something elseThe reason that I want to do it without re-running the query is that Iwant to minimize impact on the DB, and the reason that I can't useanother program is that I do not have a develpment environment where Ineed to run the queries. I would select the data into a temp table, butagain, I am concerned about impacting the DB. Any suggestions would begreatly appreciated. I am really hoping there is something as simple as@@resultset, or something to that effect.
View 6 Replies View RelatedI have a column colC in a table myTable that has a value (e.g. '0X'). The position of a non-zero character in column colC refers to the ordinal position of another column in the table myTable (in the aforementioned example, colB).
To get a column name (i.e., colA or colB) from table myTable, I can join ("ON cte.pos = cn.ORDINAL_POSITION") to INFORMATION_SCHEMA.COLUMNS for that table catalog, schema and name. But I want to show the value of what is in that column (e.g., 'ABC'), not just the name. Hoping for:
COLUMN_NAME Value
----------- -----
colB 123
colA XYZ
I've tried dynamic SQL to no success, probably not executing the concept correctly...
Below is what I have:
CREATE TABLE myTable (colA VARCHAR(3), colB VARCHAR(3), colC VARCHAR(3))
INSERT INTO myTable (colA, colB, colC) VALUES ('ABC', '123', '0X')
INSERT INTO myTable (colA, colB, colC) VALUES ('XYZ', '789', 'X0')
;WITH cte AS
(
SELECT CAST(PATINDEX('%[^0]%', colC) AS SMALLINT) pos, STUFF(colC, 1, PATINDEX('%[^0]%', colC), '') colC
[Code] ....
Hello All,
Below carry takes too much time while execution
Select
'PIT_ID' = CASE WHEN Best_BID_DATA.PIT_ID IS NOT NULL THEN Best_BID_DATA.PIT_ID ELSE Best_OFFER_DATA.PIT_ID END,
Best_Bid_Data.Bid_Customer,
Best_Bid_Data.Bid_Size,
Best_Bid_Data.Bid_Price,
Best_Bid_Data.Bid_Order_Id,
Best_Bid_Data.Bid_Order_Version,
Best_Bid_Data.Bid_ProductId,
Best_Bid_Data.Bid_TraderId,
Best_Bid_Data.Bid_BrokerId,
Best_Bid_Data.Bid_Reference,
Best_Bid_Data.Bid_Indicative,
Best_Bid_Data.Bid_Park,
Best_Offer_Data.Offer_Customer,
Best_Offer_Data.Offer_Size,
Best_Offer_Data.Offer_Price,
Best_Offer_Data.Offer_Order_Id,
Best_Offer_Data.Offer_Order_Version,
Best_Offer_Data.Offer_ProductId,
Best_Offer_Data.Offer_TraderId,
Best_Offer_Data.Offer_BrokerId,
Best_Offer_Data.Offer_Reference,
Best_Offer_Data.Offer_Indicative,
Best_Offer_Data.Offer_Park
from
(
Select PITID PIT_ID, CustomerId Bid_Customer, Size Bid_Size, Price Bid_Price, orderid Bid_Order_Id, Version Bid_Order_Version,
ProductId Bid_ProductId, TraderId Bid_TraderId, BrokerId Bid_BrokerId,
Reference Bid_Reference, Indicative Bid_Indicative, Park Bid_Park
From OrderTable C
Where
version = (select max(version) from OrderTable where orderid = c.orderid)
and BuySell = 'B'
and Status <> 'D'
and Park <> 1
and PitId in (select distinct pitid from MarketViewDef Where MktViewId = 4)
and Price =
( Select max(Price) From OrderTable cc
where version = (select max(version) from OrderTable where orderid = cc.orderid)
and PitId = c.PitId
and BuySell = 'B'
and Status <> 'D'
and Park <> 1
)
and Orderdate =
( Select min(Orderdate) From OrderTable dd
where version = (select max(version) from OrderTable where orderid = dd.orderid)
and PitId = c.PitId
and BuySell = 'B'
and Status <> 'D'
and Price = c.Price
and Park <> 1
)
and OrderId = (select top 1 OrderId from OrderTable ff
Where version = (select max(version) from OrderTable where orderid = ff.orderid)
and orderid = ff.orderid
and PitId = c.PitId
and BuySell = 'B'
and Status <> 'D'
and Price = c.Price
and Orderdate = c.Orderdate
and Park <> 1
)
) Best_Bid_Data
full outer join
(
Select PITID PIT_ID, CustomerId Offer_Customer, Size Offer_Size, Price Offer_Price, orderid Offer_Order_Id, Version Offer_Order_Version,
ProductId Offer_ProductId, TraderId Offer_TraderId, BrokerId Offer_BrokerId,
Reference Offer_Reference, Indicative Offer_Indicative, Park Offer_Park
From OrderTable C
Where
version = (select max(version) from OrderTable where orderid = c.orderid)
and BuySell = 'S'
and Status <> 'D'
and Park <> 1
and PitId in (select distinct pitid from MarketViewDef Where MktViewId = 4)
and Price =
( Select min(Price) From OrderTable cc
where version = (select max(version) from OrderTable where orderid = cc.orderid)
and PitId = c.PitId
and BuySell = 'S'
and Status <> 'D'
and Park <> 1
)
and Orderdate =
( Select min(Orderdate) From OrderTable dd
where version = (select max(version) from OrderTable where orderid = dd.orderid)
and PitId = c.PitId
and BuySell = 'S'
and Status <> 'D'
and Price = c.Price
and Park <> 1
)
and OrderId = (select top 1 OrderId from OrderTable ff
Where version = (select max(version) from OrderTable where orderid = ff.orderid)
and orderid = ff.orderid
and PitId = c.PitId
and BuySell = 'S'
and Status <> 'D'
and Price = c.Price
and Orderdate = c.Orderdate
and Park <> 1
)
) Best_Offer_Data
ON Best_Bid_Data.Pit_Id = Best_Offer_Data.Pit_Id
Can any one please help me?
Thanks
Prashant
I'm having a bit of a trouble explaining what I'm trying to do here.
I have 3 "source" tables and a "connecting" table that I'm going to use
tblContacts - with contactID, ContactName etc
tblGroups - with GroupID, GroupName
tblSubGroups - with SubGroupID, GroupID and SubGroupName (groupID is the ID for the parent Group from tblGroups)
They are related in a table called
tblContactsGroupConnection - with ContactID, GroupID and SubGroupID
One contact can be related to many subgroups.
What I want is a list of all contacts, with their IDs, names and what groups they are related to:
ContactID, ContactName, [SubGroupName1, SubGroupName2, SubGroupName3]
ContactID, ContactName, [SubGroupName1, SubGroupName3]
ContactID, ContactName, [SubGroupName3]
I'm sure there's a simple solution to this, but I can't find it. Any help appreciated. :)
Kirikiri
We can save query output save as CSV file directly from the Query Analyzer window. I have done it at last few year before. Now I need it.Can anyone please give the one example for the same.
Thanks
Amit K Patel
Hi,
Please help me with an SQL Query that fetches all the records from the three tables but a unique record for each forum and topicid with the maximum lastpostdate. I have to bind the result to a GridView.Please provide separate solutions for SqlServer2000/2005.
I have three tables namely – Forums,Topics and Threads in SQL Server2000 (scripts for table creation and insertion of test data given at the end). Now, I have formulated a query as below :-
SELECT ALL f.forumid,t.topicid,t.name,th.author,th.lastpostdate,(select count(threadid) from threads where topicid=t.topicid) as NoOfThreads
FROM
Forums f FULL JOIN Topics t ON f.forumid=t.forumid
FULL JOIN Threads th ON t.topicid=th.topicid
GROUP BY t.topicid,f.forumid,t.name,th.author,th.lastpostdate
ORDER BY t.topicid ASC,th.lastpostdate DESC
Whose result set is as below:-
forumid
topicid
name
author
lastpostdate
NoOfThreads
1
1
Java Overall
x@y.com
2008-01-27 14:48:53.000
2
1
1
Java Overall
a@b.com
2008-01-27 14:44:29.000
2
1
2
JSP
NULL
NULL
0
1
3
EJB
NULL
NULL
0
1
4
Swings
p@q.com
2008-01-27 15:12:51.000
1
1
5
AWT
NULL
NULL
0
1
6
Web Services
NULL
NULL
0
1
7
JMS
NULL
NULL
0
1
8
XML,HTML
NULL
NULL
0
1
9
Javascript
NULL
NULL
0
2
10
Oracle
NULL
NULL
0
2
11
Sql Server
NULL
NULL
0
2
12
MySQL
NULL
NULL
0
3
13
CSS
NULL
NULL
0
3
14
FLASH/DHTLML
NULL
NULL
0
4
15
Best Practices
NULL
NULL
0
4
16
Longue
NULL
NULL
0
5
17
General
NULL
NULL
0
On modifying the query to:-
SELECT ALL f.forumid,t.topicid,t.name,th.author,th.lastpostdate,(select count(threadid) from threads where topicid=t.topicid) as NoOfThreads
FROM
Forums f FULL JOIN Topics t ON f.forumid=t.forumid
FULL JOIN Threads th ON t.topicid=th.topicid
GROUP BY t.topicid,f.forumid,t.name,th.author,th.lastpostdate
HAVING th.lastpostdate=(select max(lastpostdate)from threads where topicid=t.topicid)
ORDER BY t.topicid ASC,th.lastpostdate DESC
I get the result set as below:-
forumid
topicid
name
author
lastpostdate
NoOfThreads
1
1
Java Overall
x@y.com
2008-01-27 14:48:53.000
2
1
4
Swings
p@q.com
2008-01-27 15:12:51.000
1
I want the result set as follows:-
forumid
topicid
name
author
lastpostdate
NoOfThreads
1
1
Java Overall
x@y.com
2008-01-27 14:48:53.000
2
1
2
JSP
NULL
NULL
0
1
3
EJB
NULL
NULL
0
1
4
Swings
p@q.com
2008-01-27 15:12:51.000
1
1
5
AWT
NULL
NULL
0
1
6
Web Services
NULL
NULL
0
1
7
JMS
NULL
NULL
0
1
8
XML,HTML
NULL
NULL
0
1
9
Javascript
NULL
NULL
0
2
10
Oracle
NULL
NULL
0
2
11
Sql Server
NULL
NULL
0
2
12
MySQL
NULL
NULL
0
3
13
CSS
NULL
NULL
0
3
14
FLASH/DHTLML
NULL
NULL
0
4
15
Best Practices
NULL
NULL
0
4
16
Longue
NULL
NULL
0
5
17
General
NULL
NULL
0 I want all the rows from the Forums,Topics and Threads table and the row with the maximum date (the last post date of the thread) as shown above.
The scripts for creating the tables and inserting test data is as follows in an already created database:-
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[FK__Topics__forumid__79A81403]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1)
ALTER TABLE [dbo].[Topics] DROP CONSTRAINT FK__Topics__forumid__79A81403
GO
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[FK__Threads__topicid__7C8480AE]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1)
ALTER TABLE [dbo].[Threads] DROP CONSTRAINT FK__Threads__topicid__7C8480AE
GO
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[Forums]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [dbo].[Forums]
GO
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[Threads]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [dbo].[Threads]
GO
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[Topics]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [dbo].[Topics]
GO
CREATE TABLE [dbo].[Forums] (
[forumid] [int] IDENTITY (1, 1) NOT NULL ,
[name] [varchar] (255) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL ,
[description] [varchar] (255) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL
) ON [PRIMARY]
GO
CREATE TABLE [dbo].[Threads] (
[threadid] [int] IDENTITY (1, 1) NOT NULL ,
[topicid] [int] NOT NULL ,
[subject] [varchar] (100) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL ,
[replies] [int] NOT NULL ,
[author] [varchar] (100) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL ,
[lastpostdate] [datetime] NULL
) ON [PRIMARY]
GO
CREATE TABLE [dbo].[Topics] (
[topicid] [int] IDENTITY (1, 1) NOT NULL ,
[forumid] [int] NULL ,
[name] [varchar] (255) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL ,
[description] [varchar] (255) COLLATE SQL_Latin1_General_CP1_CI_AS NULL
) ON [PRIMARY]
GO
ALTER TABLE [dbo].[Forums] ADD
PRIMARY KEY CLUSTERED
(
[forumid]
) ON [PRIMARY]
GO
ALTER TABLE [dbo].[Threads] ADD
PRIMARY KEY CLUSTERED
(
[threadid]
) ON [PRIMARY]
GO
ALTER TABLE [dbo].[Topics] ADD
PRIMARY KEY CLUSTERED
(
[topicid]
) ON [PRIMARY]
GO
ALTER TABLE [dbo].[Threads] ADD
FOREIGN KEY
(
[topicid]
) REFERENCES [dbo].[Topics] (
[topicid]
)
GO
ALTER TABLE [dbo].[Topics] ADD
FOREIGN KEY
(
[forumid]
) REFERENCES [dbo].[Forums] (
[forumid]
)
GO
------------------------------------------------------
insert into forums(name,description) values('Developers','Developers Forum');
insert into forums(name,description) values('Database','Database Forum');
insert into forums(name,description) values('Desginers','Designers Forum');
insert into forums(name,description) values('Architects','Architects Forum');
insert into forums(name,description) values('General','General Forum');
insert into topics(forumid,name,description) values(1,'Java Overall','Topic Java Overall');
insert into topics(forumid,name,description) values(1,'JSP','Topic JSP');
insert into topics(forumid,name,description) values(1,'EJB','Topic Enterprise Java Beans');
insert into topics(forumid,name,description) values(1,'Swings','Topic Swings');
insert into topics(forumid,name,description) values(1,'AWT','Topic AWT');
insert into topics(forumid,name,description) values(1,'Web Services','Topic Web Services');
insert into topics(forumid,name,description) values(1,'JMS','Topic JMS');
insert into topics(forumid,name,description) values(1,'XML,HTML','XML/HTML');
insert into topics(forumid,name,description) values(1,'Javascript','Javascript');
insert into topics(forumid,name,description) values(2,'Oracle','Topic Oracle');
insert into topics(forumid,name,description) values(2,'Sql Server','Sql Server');
insert into topics(forumid,name,description) values(2,'MySQL','Topic MySQL');
insert into topics(forumid,name,description) values(3,'CSS','Topic CSS');
insert into topics(forumid,name,description) values(3,'FLASH/DHTLML','Topic FLASH/DHTLML');
insert into topics(forumid,name,description) values(4,'Best Practices','Best Practices');
insert into topics(forumid,name,description) values(4,'Longue','Longue');
insert into topics(forumid,name,description) values(5,'General','General Discussion');
insert into threads(topicid,subject,replies,author,lastpostdate) values (1,'About Java Tutorial',2,'a@b.com','1/27/2008 02:44:29 PM');
insert into threads(topicid,subject,replies,author,lastpostdate) values (1,'Java Basics',0,'x@y.com','1/27/2008 02:48:53 PM');
insert into threads(topicid,subject,replies,author,lastpostdate) values (4,'Swings',0,'p@q.com','1/27/2008 03:12:51 PM');
Hi to all,I just need to get two fields from a table and manipulate the resultsin next query of a procedure.I planned to code like what you seebelow,create procedure marks1as@ sql1 as varchar(50)@ sql1=select registerno ,subjectcode from mark;beginselect * from marksetting where registerno='@sql1.registerno' andsubjectcode='@sql1.subjectcode';endcan it be possible to get the results as shown in the code? elsepropose an alternative for this scenario.Thanks in Advance.
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