Select Latest Records From GROUP BY Query
Feb 26, 2014
I have a table T (a1, ..., an, time, id). I need to select those rows that have different id (GROUP BY id), and from each "id group" the row that has the latest field 'time'. Something like SELECT a1, ..., an, time, id ORDER BY time DESC GROUP BY id. This is the wrong syntax and I don't know how to handle this.
View 3 Replies
ADVERTISEMENT
Aug 21, 2014
select
DayRank = ROW_NUMBER() OVER(ORDER BY a.datedel DESC),
a.order,a.line,a.datedel,a.recpt,b.status,
b.item,b.t_sup
from historytbl a
inner join order b
on a.order = b.order
and a.line = b.line
and a.status =4
group by a.order,line,a.datedel,a.recpt,b.status,b.item,b.sup
The query is returned the results below.
Rank OrderLineDateDelrecptitemsup
----- -------------------------------
1aaa102014-18-08rc1zzz1231122
2bbb202014-08-08rc2zzz1231122
3ccc302014-04-08rc3zzz1231122
4ddd902014-08-11rc6yyy123333
5eee102014-05-11rc7yyy123333
5fff90 2014-02-11rc8yyy123333
6ggg102014-05-10rc9qqq123444
7hhh502014-04-10rc0qqq123444
8iii102014-04-10rc5rrr123555
However, I want to have the query only show most recent two records for each group of item and sup, please see the results I want below.
Rank OrderLineDateDelrecptitemsup
----- -------------------------------
1aaa102014-18-08rc1zzz1231122
2bbb202014-08-08rc2zzz1231122
4ddd902014-08-11rc6yyy123333
5eee102014-05-11rc7yyy123333
6ggg102014-05-10rc9qqq123444
7hhh502014-04-10rc0qqq123444
View 4 Replies
View Related
Sep 21, 2007
Hello!
I have a table, where one of the columns is the date/timestamp of when each row was inserted. I want to be able to extract the most recently inserted rows.
With Sybase (a not so distant cousin of MS SQL) the following works:
select * from TABLE having date = max(date)
With MS SQL, however, the same query does not work:
Column 'TABLE.date' is invalid in the select list because it is not contained in an aggregate function and there is no GROUP BY clause.
What's the solution? Thanks!
View 14 Replies
View Related
Mar 21, 2007
Hi all,
hopefully someone can suggest the best way of implementing the problem i am trying to resolve. We have a table which contains rows relating to tests run on our product. This table is populated from an SSIS job which parses CSV files.
There are multiple rows per serial number relating to multiple tests. The only tests i am interested in are the ones with an ID of T120. Here is the query i have so far which should make it a little easier to explain:
SELECT [SerialNumber]
,Param1
,[TimeStamp]
FROM [Build Efficiency System].[dbo].[SSIS_SCANNERDATA_TBL]
WHERE Test = 'T120'
GROUP BY SerialNumber, Param1, [TimeStamp]
ORDER BY SerialNumber
What i have above is fine to a point. The problem i am encountering is that in test T120 it specifies a part which can be be one of about 6 in field Param1. If during testing there is a problem with the part then it is replaced and the test run a second time up until the whole product passes the test. The query above returns all instances of replacements so i may have the out put as follows:
SerialNumber Param1 TimeStamp
0 Part1 15/03/07
0 Part2 15/03/07
0 Part2 16/03/07
0 Part3 15/03/03
What i really need is to only list the last part that is installed, hence the one with the latest timestamp:
SerialNumber Param1 TimeStamp
0 Part1 15/03/07
0 Part2 16/03/07
0 Part3 15/03/03
Can someone please help me to alter the above query so that it will show only those Param1 fields that have the latest date for each part.
Many thanks in advance,
Grant
View 8 Replies
View Related
Aug 25, 2015
I have a scenario as below for one ID -
+------+--------+----------------------------+-------+
| id | amount | date | descr|
+------+--------+-----------------------------+------+
| 5689 | 10.00 | 2015-08-25 12:10:57.107 | 4 |
| 5689 | 10.00 | 2015-08-24 12:07:57.107 | 3 |
| 5689 | 10.00 | 2015-08-25 12:05:57.107 | 3 |
| 5689 | 130.00 | 2015-08-24 12:07:57.107 | 4 |
| 5689 | 130.00 | 2015-08-25 12:07:57.107 | 3 |
+------+--------+-----------------------------+-----+
I want to fetch below 3 records from the above scenario i.e. latest record of each amount (Latest is determined using "descr" column i.e. 4 is greater then 3 -
+------+--------+----------------------------+-------+
| id | amount | date | descr|
+------+--------+-----------------------------+------+
| 5689 | 10.00 | 2015-08-25 12:10:57.107 | 4 |
| 5689 | 10.00 | 2015-08-24 12:07:57.107 | 3 |
| 5689 | 130.00 | 2015-08-24 12:07:57.107 | 4 |
+------+--------+-----------------------------+-----+
But in case of same amounts I am unable to fetch the latest status as even using partitioning will treat them as one.
CREATE TABLE #TMP
(
ID INT,
AMOUNT DECIMAL,
[DATE] DATETIME,
DESCR VARCHAR(10)
)
INSERT INTO #TMP VALUES
(5689,10.00,'2015-08-25 12:10:57.107','4')
,(5689,10.00,'2015-08-24 12:07:57.107','3')
,(5689,10.00,'2015-08-25 12:05:57.107','3')
,(5689,130.00,'2015-08-24 12:07:57.107','4')
,(5689,130.00,'2015-08-25 12:07:57.107','3')
View 8 Replies
View Related
Mar 17, 2006
I have a SQL query I need to design to select name and email addressesfor policies that are due and not renewed in a given time period. Theproblem is, the database keeps the information for every renewal inthe history of the policyholder.The information is in 2 tables, policy and customer, which share thecustid data. The polno changes with every renewal Renewals in 2004would be D, 2005 S, and 2006 L. polexpdates for a given customer couldbe 2007-03-21, 2006-03-21, 2005-03-21, and 2004-09-21, with polno of1234 (original policy), 1234D (renewal in 2004), 1234S (renewal in2005), and 1235L (renewed in 2006).The policy is identified in trantype as either 'rwl' for renewal, or'nbs' for new business.The policies would have poleffdates of 2004-03-21 (original 6 monthpolicy) 2004-09-21 (first 6 month renewal) , 2005-03-21 (2nd renewal,1 year), 2006-03-21(3rd renewal, 1 yr).I want ONLY THE LATEST information, and keep getting earlyinformation.My current query structure is:select c.lastname, c.email, p.polno, p.polexpdatefrom policy p, customer cwhere p.polid = c.polidand p.polexpdate between '2006-03-01 and 2006-03-31and p.polno like '1234%s'and p.trantype like 'rwl'and c.email is not nullunionselect c.lastname, c.email, p.polno, p.polexpdatefrom policy p, customer cwhere p.polid = c.polidand p.polexpdate between '2006-03-01 and 2006-03-31and p.polno like '1234%'and p.trantype like 'nbs'and c.email is not nullHow do I make this query give me ONLY the polno 123%, or 123%Sinformation, and not give me the information on policies that ALSOhave 123%L policies, and/ or renewal dates after 2006-03-31?Adding a 'and not polexpdate > 2006-03-31' does not work.I am working with SQL SERVER 2003. Was using SQL Server 7, but foundit was too restrictive, and I had a valid 2003 licence, so I upgraded,and still could not do it (after updating the syntax - things likeusing single quotes instead of double, etc)I keep getting those policies that were due in the stated range andHAVE been renewed as well as those which have not. I need to get onlythose which have NOT been renewed, and I cannot modify the database inany way.*** Free account sponsored by SecureIX.com ****** Encrypt your Internet usage with a free VPN account from http://www.SecureIX.com ***
View 24 Replies
View Related
Oct 30, 2007
I have the following table called BADSANTA:
varchar(30) datetime
NAME WHENBAD
OJ Simpson 2007-1-12 xx:xx:xx:xxx
OJ Simpson 2007-4-2 xx:xx:xx:xxx
Monica Lewinsky 2006-7-4 xx:xx:xx:xxx
Monica Lewinsky 2006-10-31 xx:xx:xx:xxx
Bill Clinton 2006-7-4 xx:xx:xx:xxx
Bill Clinton 2006-10-31 xx:xx:xx:xxx
Bart Simpson 2006-11-2 xx:xx:xx:xxx
Bart Simpson 2006-2-25 xx:xx:xx:xxx
Bart Simpson 2005-07-27 xx:xx:xx:xxx
I want the records of the persons latest WHENBAD date. It should return one recordset for each person.
Thanks in advanced.
View 4 Replies
View Related
Feb 11, 2015
Here is my table data:
CREATE TABLE
#TestTable (
Pk INT,
GroupID INT,
Enabled BIT
[code]..
I need to write a select query that will retrieve any GroupID in which every record has an Enabled value of 1.In the example I've provided, only GroupID 1 and 3 will be returned since GroupID 2 has a record with an Enabled value of 0.What would be the most efficient way to write such a query?
View 2 Replies
View Related
Mar 18, 2014
I have a situation where deleting old records is blocking updating latest records on highly transactional table and getting timeout errors from application.
In details, I have one table called Tran_table1 in OLTP database. This Tran_table1 is highly transactional table, it will receive data for insert/update continuously
While archiving 2 years old records from Tran_table1 into Tran_table1_archive in batches(using DELETE OUTPUT INTO clause), if there is any UPDATEs on Tran_table1,these updates are getting blocked and result is timeout errors in application.
Is there any SQL Server hints to avoid blocking ..
View 3 Replies
View Related
Aug 8, 2013
Here's what I'm trying to do
TransIDMemberIDFundIDBuyPriceDate
1501101$1042013-01-24
2501102$1012013-04-23
3501102$1182013-02-04
4501102$982013-05-19
5501103$532013-05-21
6501103$392013-07-09
I'm trying to get the latest buy price for each fund a member bought.
So in the above example, I'm trying to formulate a query to retrieve all the latest bought price for memberid 105:
Desire Query Result
TransIDMemberIDFundIDBuyPriceDate
1501101$1042013-01-24
4501102$982013-05-19
6501103$392013-07-09
So far, I've tried using Group By clause on FundID and BuyPrice and MAX() function for the date, but I can' get the TransID.
View 3 Replies
View Related
Jun 28, 2012
I need to write a query to group records based on speed (specific value of zero). Consider the following scenario:
Table - Vehicle_Event
Vehicle_Id____Date_Time______________Speed
C1____________2012-06-28_10:10:00____5
C1____________2012-06-28_10:11:00____0
C1____________2012-06-28_10:12:00____0
C1____________2012-06-28_10:13:00____4
C1____________2012-06-28_10:14:00____3
[code].....
OUTPUT_Required:
Vehicle_Id____Date_Time___________________________ __________Speed
C1____________2012-06-28_10:10:00___________________________5
C1____________2012-06-28_10:11:00_to_2012-06-28_10:12:00____0
C1____________2012-06-28_10:13:00___________________________4
C1____________2012-06-28_10:14:00___________________________3
C1____________2012-06-28_10:15:00_to_2012-06-28_10:18:00____0
[Code] .....
I need the start and end time of consecutive records of the same vehicle with 0 speed ordered by date_time. If there is more than one consecutive record with zero speed it needs to be grouped together.
View 6 Replies
View Related
Jun 20, 2008
Hello All
I have table with 3 columns and Datas like this
LRNo LRAmount LRType
L001 100 TP
L002 250 PA
L003 150 AC
L004 275 TP
L005 400 PA
L006 125 TP
I need a query to get output like this
LRtype Count TotalAmount
TP 3 500
PA 2 650
AC 1 150
Where count is total no of records grouped for LR Type and totalAmount is Sum of TotalAmount grouped by LRType
please help me
Thanks in Advance
View 4 Replies
View Related
Nov 14, 2005
Hi All,
I am trying to return a result set that gives me the top 20 results for EACH group (PERILNAME in this case), not the top 20 results of the whole result set.
I have been able to create the resluts I want using UNION, but this is not practical when there is more than a few groups. Below is the code the returns the results I am after, any ideas how to achieve this another way?
SELECT TOP 20 LookupPeril.PERILNAME, accgrp.ACCGRPNUM, accgrp.ACCGRPNAME, SUM(loccvg.VALUEAMT) AS [Total Value],
COUNT(loc.LOCID) AS [Num Locs],loccvg.VALUECUR
FROM loc
INNER JOIN loccvg ON loc.LOCID = loccvg.LOCID
INNER JOIN accgrp ON loc.ACCGRPID = accgrp.ACCGRPID
INNER JOIN RMS_Reports.dbo.LookupPeril LookupPeril ON loccvg.PERIL = LookupPeril.PERILCODE
WHERE LookupPeril.PERILNAME = 'Earthquake'
GROUP BY accgrp.ACCGRPNUM, accgrp.ACCGRPNAME, LookupPeril.PERILNAME, loccvg.VALUECUR
UNION
SELECT TOP 20 LookupPeril.PERILNAME, accgrp.ACCGRPNUM, accgrp.ACCGRPNAME, SUM(loccvg.VALUEAMT),
COUNT(loc.LOCID) ,loccvg.VALUECUR
FROM loc
INNER JOIN loccvg ON loc.LOCID = loccvg.LOCID
INNER JOIN accgrp ON loc.ACCGRPID = accgrp.ACCGRPID
INNER JOIN RMS_Reports.dbo.LookupPeril LookupPeril ON loccvg.PERIL = LookupPeril.PERILCODE
WHERE LookupPeril.PERILNAME = 'Windstorm'
GROUP BY accgrp.ACCGRPNUM, accgrp.ACCGRPNAME, LookupPeril.PERILNAME, loccvg.VALUECUR
UNION
SELECT TOP 20 LookupPeril.PERILNAME, accgrp.ACCGRPNUM, accgrp.ACCGRPNAME, SUM(loccvg.VALUEAMT),
COUNT(loc.LOCID) ,loccvg.VALUECUR
FROM loc
INNER JOIN loccvg ON loc.LOCID = loccvg.LOCID
INNER JOIN accgrp ON loc.ACCGRPID = accgrp.ACCGRPID
INNER JOIN RMS_Reports.dbo.LookupPeril LookupPeril ON loccvg.PERIL = LookupPeril.PERILCODE
WHERE LookupPeril.PERILNAME = 'Tornado/Hail'
GROUP BY accgrp.ACCGRPNUM, accgrp.ACCGRPNAME, LookupPeril.PERILNAME, loccvg.VALUECUR
UNION
SELECT TOP 20 LookupPeril.PERILNAME, accgrp.ACCGRPNUM, accgrp.ACCGRPNAME, SUM(loccvg.VALUEAMT),
COUNT(loc.LOCID) ,loccvg.VALUECUR
FROM loc
INNER JOIN loccvg ON loc.LOCID = loccvg.LOCID
INNER JOIN accgrp ON loc.ACCGRPID = accgrp.ACCGRPID
INNER JOIN RMS_Reports.dbo.LookupPeril LookupPeril ON loccvg.PERIL = LookupPeril.PERILCODE
WHERE LookupPeril.PERILNAME = 'Flood'
GROUP BY accgrp.ACCGRPNUM, accgrp.ACCGRPNAME, LookupPeril.PERILNAME, loccvg.VALUECUR
ORDER BY LookupPeril.PERILNAME, [Total Value]
TIA.
View 4 Replies
View Related
Nov 16, 2005
Hi All,
I am trying to return a result set that gives me the top 20 results for EACH group (PERILNAME in this case), not the top 20 results of the whole result set.
I have been able to create the results I want using UNION, but this is not practical when there is more than a few groups. I think it should be possible using a derived table, but I am not sure how to do it! Below is the code the returns the results I am after, any ideas how to achieve this another way?
SELECT TOP 20 LookupPeril.PERILNAME, accgrp.ACCGRPNUM, accgrp.ACCGRPNAME, SUM(loccvg.VALUEAMT) AS [Total Value],
COUNT(loc.LOCID) AS [Num Locs],loccvg.VALUECUR
FROM loc
INNER JOIN loccvg ON loc.LOCID = loccvg.LOCID
INNER JOIN accgrp ON loc.ACCGRPID = accgrp.ACCGRPID
INNER JOIN RMS_Reports.dbo.LookupPeril LookupPeril ON loccvg.PERIL = LookupPeril.PERILCODE
WHERE LookupPeril.PERILNAME = 'Earthquake'
GROUP BY accgrp.ACCGRPNUM, accgrp.ACCGRPNAME, LookupPeril.PERILNAME, loccvg.VALUECUR
UNION
SELECT TOP 20 LookupPeril.PERILNAME, accgrp.ACCGRPNUM, accgrp.ACCGRPNAME, SUM(loccvg.VALUEAMT),
COUNT(loc.LOCID) ,loccvg.VALUECUR
FROM loc
INNER JOIN loccvg ON loc.LOCID = loccvg.LOCID
INNER JOIN accgrp ON loc.ACCGRPID = accgrp.ACCGRPID
INNER JOIN RMS_Reports.dbo.LookupPeril LookupPeril ON loccvg.PERIL = LookupPeril.PERILCODE
WHERE LookupPeril.PERILNAME = 'Windstorm'
GROUP BY accgrp.ACCGRPNUM, accgrp.ACCGRPNAME, LookupPeril.PERILNAME, loccvg.VALUECUR
UNION
SELECT TOP 20 LookupPeril.PERILNAME, accgrp.ACCGRPNUM, accgrp.ACCGRPNAME, SUM(loccvg.VALUEAMT),
COUNT(loc.LOCID) ,loccvg.VALUECUR
FROM loc
INNER JOIN loccvg ON loc.LOCID = loccvg.LOCID
INNER JOIN accgrp ON loc.ACCGRPID = accgrp.ACCGRPID
INNER JOIN RMS_Reports.dbo.LookupPeril LookupPeril ON loccvg.PERIL = LookupPeril.PERILCODE
WHERE LookupPeril.PERILNAME = 'Tornado/Hail'
GROUP BY accgrp.ACCGRPNUM, accgrp.ACCGRPNAME, LookupPeril.PERILNAME, loccvg.VALUECUR
UNION
SELECT TOP 20 LookupPeril.PERILNAME, accgrp.ACCGRPNUM, accgrp.ACCGRPNAME, SUM(loccvg.VALUEAMT),
COUNT(loc.LOCID) ,loccvg.VALUECUR
FROM loc
INNER JOIN loccvg ON loc.LOCID = loccvg.LOCID
INNER JOIN accgrp ON loc.ACCGRPID = accgrp.ACCGRPID
INNER JOIN RMS_Reports.dbo.LookupPeril LookupPeril ON loccvg.PERIL = LookupPeril.PERILCODE
WHERE LookupPeril.PERILNAME = 'Flood'
GROUP BY accgrp.ACCGRPNUM, accgrp.ACCGRPNAME, LookupPeril.PERILNAME, loccvg.VALUECUR
ORDER BY LookupPeril.PERILNAME, [Total Value]
TIA.
View 3 Replies
View Related
Jun 20, 2006
Hi
I need some help in returning the top 3 records in each group ie I have a table containing a list of stores with the address details and I need to return the top 3 records in each postcode area. The Postcode field contains the postcode area ie BN1, BN2 etc. Many thanks.
View 3 Replies
View Related
Aug 28, 2015
I have a a Group By query which is working fine aggregating records by city. Now I have a requirement to focus on one city and then group the other cities to 'Other'. Here is the query which works:
Select [City]= CASE WHEN [City] = 'St. Louis' THEN 'St. Louis' ELSE 'Other Missouri City' END, SUM([Cars]) AS 'Total Cars'
From [Output-MarketAnalysis]
Where [City] IN ('St. Louis','Kansas City','Columbia', 'Jefferson City','Joplin') AND [Status] = 'Active'
Group by [City]
Here is the result:
St. Louis 1000
Kansas City 800
Columbia 700
Jefferson City 650
Joplin 300
When I add this Case When statement to roll up the city information it changes the name of the city to 'Other Missouri City' however it does not aggregate all Cities with the value 'Other Missouri City':
Select [City]= CASE WHEN [City] = 'St. Louis' THEN 'St. Louis' ELSE 'Other Missouri City' END, SUM([Cars]) AS 'Total Cars'
From [Output-MarketAnalysis]
Where [City] IN ('St. Louis','Kansas City','Columbia', 'Jefferson City','Joplin') AND [Status] = 'Active'
Group by [City]
Here is the result:
St. Louis 1000
Other Missouri City 800
Other Missouri City 700
Other Missouri City 650
Other Missouri City 300
What I would like to see is a result like:
St. Louis 1000
Other Missouri City 2450
View 5 Replies
View Related
Dec 3, 2007
Let's say I have a data entry from a pool of employees:
table is as follow:
EmpNo Branch Date Amount
1 A101 11/30/2007 $0.90
1 A101 11/30/2007 $1.20
2 A101 11/30/2007 $0.90
3 A101 11/30/2007 $0.80
How can I select the whole table and only take in 1 unique latest entry if there are multiple entries for the same day, same branch under same employee number?
Thanks! :D
View 7 Replies
View Related
Feb 13, 2008
Hi,
I hava a table with the following information
CREATE TABLE TEMP1 (REFID INT, REVISION INT, FIELDNAM VARCHAR(10), VALUE VARCHAR(10));
INSERT INTO TEMP1 VALUES(1001, 0, 'A', 'A2');
INSERT INTO TEMP1 VALUES(1001, 0, 'C', 'C2');
INSERT INTO TEMP1 VALUES(1001, 0, 'E', 'E2');
INSERT INTO TEMP1 VALUES(1002, 0, 'A', 'A3');
INSERT INTO TEMP1 VALUES(1002, 0, 'B', 'B2');
INSERT INTO TEMP1 VALUES(1002, 0, 'E', 'E3');
INSERT INTO TEMP1 VALUES(1001, 1, 'A', 'A4');
INSERT INTO TEMP1 VALUES(1001, 1, 'E', 'E4');
Here based on latest revision and refid I should get the fieldnam and value.
Expected output:
REFID FIELDNAM VALUE REVISION
1001 A A4 1
1001 E E4 1
1002 B B2 0
1001 C C2 0
View 7 Replies
View Related
Dec 16, 2007
Hi all,
I have a question regarding SQL Server Performance and would be grateful for a tip. Let's say I have a DB with 50.000 records. These records belong to 1.000 different datasets, so there is 1 actual and 49 historical data records. For example a company with 1000 employees has a database where each year a new record is created for each employee so after 50 years they have 50.000 records (50 years x 1000 employees). 1 record is actual, and 49 are historical. What is the best way to store this? Main target is performance for the enduser, so when an employee clicks "See all my records" it should be fast. But on the other hand the application mainly works only with the current year. Additionally it should also be fast for the boss of business unit who wants to see the latest records of his e.g. 100 employees. I have some ideas and would like to get your opinion:
1. Retrieve by latest date
Just store the records. To get the current year just select the record with the latest year. Disadvantage might be with larger databases: If the company switches to store the requests per month, each user would have 600 records (12 months x 50 years). Each time the latest record should be retrieved, 600 recards have to be compared regarding the latest date (or sorted by date descending using Top1, but this might be a problem for the boss then? Or could this be combined for a group if the boss wants to see all the latest records of his employees?).
2. Add a 'IsCurrent'-Flag
Each time a new record is stored it should be compared to the latest record. If it is newer, the 'IsCurrent'-Flag should be removed and then checked on the new record. This should be fast processed (because on saving a new record it only needs to be checked against the currently 'IsCurrent'-flagged record), and for retrieving the current record no further comparison is necessary. But how could I do this? I need to update the "AddRecord"-SP with this comparison, but I don't know how to do this.
Currently number 2 is my favorite, I just don't know how to do it ;-) What is your opinion about it, and could you include an example?
Thanks
View 20 Replies
View Related
Mar 17, 2015
I have a table where i am inserting into temp table, I mean selecting the records from existing table. From this how can i get latest records.
create table studentmarks
(
id int,
name varchar(20),
marks int
)
Insert into dbo.studentmarks values(1,'sha',20);
[Code] ....
How to write a sql query to get the below output
studentname totalmarks
sha 90
hu 120
View 1 Replies
View Related
Aug 10, 2007
It seems when I run the query with the set staticts IO on then statistic reports back with the 'work table', and the query takes 30+ sec. if the worktable is ommited(whatever the reason?) the query take less 1 sec.
Here is my take, I believe work table is created in tempdb...and if not then whole query is using the cached page, am I right?
if I am right then the theory is, if I increase the (via sp_configure) server min memory setting and min query memory, the query ought use the cached page and return in less 1 sec. (specially there is absolutely no one but me on the server), so far I can't make it go faster...what setting am I missing to make it run faster?
Another question is if the query can not avoid but use the tempdb, is it going to always be 30 sec+ time? why is tempdb involvement make it go so much slower?
Thanks in for you help in advance
View 1 Replies
View Related
Aug 11, 2007
Hi,
Please have a look at the following two queries, the purpose of which is to find which ten users (represented by 'Username') have created the most records which contain the term 'foo':
SELECT TOP 10 Username, COUNT(*) AS [Count] FROM Options
WHERE FREETEXT(*, 'foo')
GROUP BY Username
ORDER BY [Count] DESC
SELECT TOP 10 Username, COUNT(*) AS [Count] FROM Options
JOIN FREETEXTTABLE (Options, *, 'foo', 500) ct
ON OptionID = ct.[KEY]
GROUP BY Username
ORDER BY [Count] DESC
They both produce the same result set. However, I am wondering which is more performant. At first glance, it would seem the first one would be. It doesn't involve a JOIN and should, therefore, be more efficient.
But this depends on how the FREETEXT expression is evaluated. My concern is that internally, SQL Server would generate an entire recordset based on 'WHERE FREETEXT(*, 'foo')', which could be thousands of records, and only then restrict this to the TOP 10 by COUNT.
If this does happen, then it would be better to join to a FREETEXTTABLE, where I can at least restrict the result set using the 'top_n_by_rank' parameter (which is set as '500' in this case, as this seems a good balance of performance against the likely number of duplicates I will get in my FREETEXTTABLE results).
So... I am worrying about this unnecessarily? Should I just use the simpler first version?
Any thoughts appreciated.
Thanks
View 3 Replies
View Related
Mar 26, 2012
I have 2 tables:
TransactionsImport (which is the destination table)
TransactionsImportDelta
I need to do the following:
Get the records with the latest date and time in the destination table TransactionsImport
Get the records with the latest date and time in the destination table TransactionsImportDelta table
Insert the records from the TransactionsImportDelta table into TransactionsImport that have a greater date & time than the current records in TransactionsImport table.
Problem is date & time are in separate columns:
Table structure:
Date Time ID
2011121305154107142201008300100
2011121305154122B1L13ZY0000A07YD
2011121304504735142201090002600
2011121304504737142201095008300
2011121304504737142201090002600
View 2 Replies
View Related
Jun 15, 2006
Itemlookup tableField names : index_id (primary key), itemno, description.It has a child table, which is ItemPriceHistory tableThe relationship to the child table is one (parent table)-to-many(child table). - It is possible to have no child record for some rowsin the parent table.ItemPriceHistory tableField names: index_id (primary key), itemlookupID (foreign key of theItemlookup table), date begin, priceIt is a child table of the itemlookup table.How can I get all records for both tables with the latest begin date ifexists?I also need to show the records in the parent table if there is norelated record in the child table.Please help
View 4 Replies
View Related
Jul 19, 2006
I have records which are like below.
create table testedit
(
editid int
,Tguid varchar(20)
,ttime numeric(4,2)
,numApp int
,numOrg int
,custid varchar(1)
)
INSERT INTO testedit values(1,'ABC',12.52,40,11,'Z')
INSERT INTO testedit values(2,'ABC',12.52,500,33,'Z')
INSERT INTO testedit values(3,'ABC',12.53,500,33,'Z')
Out of this records I would like to select only the 1st and the 3rd record. ie. My result should only have the below rows
1,'ABC',12.52,40,11,'Z'
3,'ABC',12.53,500,33,'Z'
Any help?
View 6 Replies
View Related
Oct 19, 2006
I would like to make a listbox only appear if there are results returned by the SQL select statement. I want this to be assessed on a click event of a button before the listbox is rendered.I obviously use the ".visible" property, but how do I assess the returned records is zero before it is rendered?
View 3 Replies
View Related
Aug 19, 2005
Hi,I feel stupid for posting this question but I cannot find out how to create an SQL statement to return records that have been added today.My database table has a field called calldate which hold the date and time of the record added to the database i.e. "02/08/2005 16:55:41".Please can someone let me know how I can search to find all records added today. I thought it would be something like it, but I assume I need to format the calldate so it's just 02/08/2005.Select *From TableWhere CallDate = GetDate()ThanksBrett
View 9 Replies
View Related
Jun 3, 1999
dear friend,
i run a sql command like this
select * from table_name
what i want is that if no. of records found are greater then 500 than it should stop the query and only show those 500 records dont go further and stop the process
waiting for reply
ashish bhatnagar
View 1 Replies
View Related
Apr 5, 2014
I have a problem. In my database I have the following numbers available:
101
104
105
110
111
112
113
114
What I need is to get a select query with records and sequentials numbers after it like:
101 0
104 1 (the number 105)
105 0
110 4 (the numbers 111,112,113,114)
111 3 (the numbers 112,113,114)
112 2 (the numbers 113,114)
113 1 (the numbers 114)
114 0
How can I do It?
View 2 Replies
View Related
May 24, 2005
Hello,
If I have a TransactionTableT including with fields like this:
TransactionDateDT
QuantityIN
ItemID,
ItemCodeCH
ItemNameCH
PriceFL
Each time the user make an entry a new record is inserted.
How can I pull only the latest (TransactionDateDT) record for each item. I've tried MAX(TransactionDateDT), but how can I get ItemCodeCH, ItemNameCH and PriceFL.
Basically I need to create a report with the latest price for each item.
Any feedback welcome!
Edi
View 2 Replies
View Related
May 28, 2008
Hi Friends,
I have created the procedure in sql server 2005 for retriving email addresses from table based on date_expiry and concatinating all email addresses in to @tolist as shown below
Declare @tolist varchar(8000)
set @tolist = ''SELECT @tolist = @tolist + ';' + COALESCE(email, '')
FROM awc_register
WHERE DATEDIFF(day, date_expiry, GETDATE())='3'print @tolist
set @tolist = substring(@tolist, 2, len(@tolist))
and I passed this @tolist to another procedure which should send mails for email addresses present in @tolist variable.
Problem is I need to send the mail to each email address separatley.( not bulkly)
Thanks,
View 1 Replies
View Related
Oct 6, 2005
Good day!
I just can't figure out how I can display only the top record for the duplicate records in my table.
Example:
Table1
Code Date
01 10/1/05
01 10/2/05
01 10/3/05
02 9/9/05
02 9/9/05
02 9/10/05
My desired result would be:
Table1
Code Date
01 10/1/05
02 9/9/05
Thanks.
View 12 Replies
View Related
Nov 9, 2006
Hello. I'm having troubles with a query that (should) return all therecords between two dates. The date field is a datetime type. The db isSQL Server 2000. When I try thisSELECT RESERVES.RES_ID, PAYMENTS_RECEIVED.PYR_ID,PAYMENTS_RECEIVED.PYR_VALUE, PAYMENTS_RECEIVED.PYR_DATE,CUSTOMERS.CUS_NAMEFROM RESERVES LEFT OUTER JOINPAYMENTS_RECEIVED ON RESERVES.RES_ID =PAYMENTS_RECEIVED.RES_ID LEFT OUTER JOINCUSTOMERS ON RESERVES.CUS_ID = CUSTOMERS.CUS_IDWHERE (PAYMENTS_RECEIVED.PYR_DATE >= '2006-03-20 00:00:00') AND(PAYMENTS_RECEIVED.PYR_DATE < '2006-03-27 00:00:00')on a "query builder" in visual studio, I get the results that I want.But when I use exactly the same query on an asp 3 vbscript script, Iget no results (an empty selection).I've done everything imaginable. I wrote the date as iso, ansi, britishformat using convert(,103) (that's how users will enter the dates),i've used cast('20060327' as datetime), etc. But I can't still get itto work. Other querys from the asp pages work ok. Any ideas?thanks a lot in advance
View 1 Replies
View Related