Lowest Cost
Nov 30, 2004
OK, this should be an easy one but my brain isn't quite working right now.
I have a table, we'll call Table1 like so:
ProductID Supplier Cost
12345 A 14.50
12345 B 13.49
12345 C 12.00
43222 A 15.00
43222 B 15.21
43222 C 13.99
12312 B 14.00
15421 A 21.99
15421 C 20.00
And I want to Get the name of the Supplier with the Lowest cost,
I know I can go like:
SELECT ProductID, MIN(Cost) FROM Table1 GROUP BY ProductID
and get the lowest cost, but what would be the most effiecent way to get all three fields returned by the query? I need the ProductID, Supplier and Cost.
Thanks,
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May 28, 2015
I need to build TSQL query to return the Last unit Cost from my table of movement of goods SL (on CTE) but the MAX(Datalc) must be Less or Equal to my HeaderInvoice.
This is my script:
With MaxDates as (
SELECT ref,
MAX(epcpond)[Unitcostprice],
MAX(datalc) MaxDate
FROM sl
[code]....
the problem I have right now is that the Unitcostprice of my table of goods movements has a top date greather than the date of my bill.
Example:
invoice date : 29.01.2015 unitcost on invoice line = 13,599722
Maxdate (CTE) : 19.03.2015 unitCost from my table of movement of goods = 14,075
That ´s not correct because the MAxdates > invoice date and the unitCost of 14,075 is the cost on 19.03.2015 and not just before my invoice date.
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Jul 3, 2014
I right in thinking that if the estimated subtree cost is higher than the cost threshold for parallelism then it will use a parallel plan? If so, I've read the cost threshold is measured in minutes but is the subtree cost measured in something else, the mysterious cost number? And if so, how are the two compared?
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Sep 14, 2012
SELECT
@AppId AS Application_Id
, MB.POLICY_ID AS Policy_Id
, MH.BFN_CHG_DATEAS Date_Of_Disinvestment
, AD.X_INVEST_AMT AS Original_Investment_Value
, MB.TOTAL_AMOUNT AS Encashment_Value
, WH.TOT_COMMISSION AS Top-Up_Commission
FROM: I select from lot of table, as specified from my select statement
My output:
AppId PolicyId Date_Of_DisIn Original_Inv Encashment_Value Top-Up_Commision ???
1-1-1; 1000000; Jan-01-12; 2882.07; 3312.00; 2306; ??
My Aliases returns just one values, of which that's what I am expecting, so I need to make a comparison between Original_Investment_Value and (Encashment_Value + Top-Up_Commision), and return the lowest value
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Jul 23, 2005
Is there a more elegant way to do the following?...declare @d1 datetime, @d2 datetimeset @d1 = '2005-01-01'set @d2 = '2005-02-01'selectcasewhen datediff(dd,@d2,@d1)is nullthen coalesce(@d1, @d2)when (datediff(dd,@d2,@d1)> 0)then @d2else @d1endCheers,..N
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Aug 29, 2007
Hi, this seems to be an easy question but I can't find a quick answer to it.
I have an asp page that communicates with a database and I want the following example to work...
Insert 5 records into the DB with primary keys 1-5.
Remove record with key number 2.
Now, if I insert a new record I want it to take the smallest available key number (in this case number 2). This will save space in the database and keep the key numbers from increasing forever.
Does auto increment work like this?
If not, how do I do it?
Thanks for any replies!
Niklas
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May 25, 2004
bp server with the lowest price
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Jun 2, 2008
Im having trouble finding a solution to comparing columns to find the lowest value.
Example
Row 1
COL 1 = 10
COL 2 = 20
COL 3 = 60
COL 4 = 5
COL 5 = 35
I would want to return 5.
I tried to write a case statement such as below but am unable to use Logical Operators.
WHEN C1 <= C2 and C1<= C3 THEN C1
WHEN C2 <= C3 THEN C2
ELSE C3
any help would be great.
Thanks,
Nick
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Feb 11, 2007
(Spam Removed)
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Dec 20, 2007
I'm using sql express 2005. I need help with buliding a view.
I'm trying to join two tables and then, if duplicate ID's exist, retrieve the row with the lowest value in a specific column.
For instance:
TableHousehold:
ID Name Status
001 The Smith€™s A
002 The Jone€™s A
003 The Adam€™s A
004 The Grant€™s A
TableResidents
Pk HouseholdID ResidentID Name Gender
1 001 1 Mary Smith F
2 001 2 Jason Smith M
3 001 3 Rachel Smith F
4 002 1 Mike Jones M
5 002 2 Sara Jones F
6 003 2 Erik Adams M
The resident ID is auto increment and assigned by the server. It is possible for resident 1 for each household to have been deleted. It is also possible that a household does not contain any residents. Therefore, I wish to join these tables and return this:
ID HouseHoldName Status ResidentName Gender
001 The Smith€™s A Mary Smith F
002 The Jone€™s A Mike Jones M
003 The Adam€™s A Erik Adams M
004 The Grant€™s A null null
There are other columns in both tables that I will want to join, but for simplicity, the above example illustrates my need.
I was able to accomplish this by creating two views. But I€™d like to try and do this in one.
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Jul 13, 2006
Hello,
I have a long stored procedure that performs some inserts and updates on the table that users are accessing through a user interface. We this stored procedure runs users experience slowness, is there any way I can get the stored procedure runs with a lowest priority so that user will be able to perform their tasks first.
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Mar 13, 2006
I have a little problem that I just haven't been able to solve. I don't think it is very difficult but I can't seem to make it work. Here's the scenario:
I have a database with the following values:
Model Make Price
DA1100 GTN$88.00
DA1100 GTN $100.00
DA1000 GBN$110.00
DA668 GTN$100.00
DA880 GTN$200.00
In this case DA1100 is listed twice with 2 different prices. I only want to display the one with the lowest price. So the result I want is:
Model Make Price
DA1100 GTN$88.00
DA1000 GBN$110.00
DA668 GTN$100.00
DA880 GTN$200.00
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Dec 19, 2013
finding the first value to cross a specific threshold in SQL Server
LoadTemp1 LoadTemp2 LoadTemp3 TimeStamp
300 350 200 12-10-2013 13:30
177 238 333 12-10-2013 13:05
240 190 170 12-10-2013 12:45
How do I design query to find the first LoadTemp* that cross a threshold of 340 degrees per TimeStamp.
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May 8, 2007
I need to display the difference between the highest and lowest salaries. Label the column DIFFERENCE. like below:
From what I came up with is should look something like so:
<b>SQL> select * from 'salary' order by salary desc limit
select * from 'salary' order by salary desc limit 1,1 </b>
DIFFERENCE
------------------
4200
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Oct 4, 2007
Let's say I have a result set (records) containing numbers such as:01239162145100101102103104105106How might someone write a procedure to get the next lowest number inthis sequence? In this case it would be: 4. Some combination ofSelect, Min & When, I am sure, but it escapes me at the moment.Thoughts? Thanks...
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Jul 13, 2006
Hello,
I have a long stored procedure that performs some inserts and updates on the table that users are accessing through a user interface. We this stored procedure runs users experience slowness, is there any way I can get the stored procedure runs with a lowest priority so that user will be able to perform their tasks first.
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Apr 4, 2012
I am attempting to only query the lowest year, and month from my entire production database. I am using the following query and when I do it individually it will bring back the lowest year but also with additional years. How can I remove those other years so I can only query the lowest year and month from the entire database?
Code:
select distinct RRCID, MIN(YEAR)as YEAR, MONTH
from Gas_Prodv1
where RRCID = 1221376
group by RRCID, MONTH
order by YEAR, MONTH
Results:
122137620071 <----- Only want this record
122137620072
122137620073
122137620075
122137620076
122137620077
122137620078
122137620079
1221376200710
1221376200711
1221376200712
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Dec 6, 2012
ID (PK), userID (FK), from [Datetime], to[datetime], type [int] , value [nvarchar]
Conditions
I want to select the column "to" which is a datetime-column for all users within the table.
One user can have multiple registered rows in "mytable", so I want to select the row that contains the newest "from" date.The newest "from"-column for a specific user is where I am struggling... Because if the "to"-column of any of the registered rows by the current user is equal to the newest "from -1 day" column for the user, I want to select the second newest from-date.
Code:
//Handwritten
DECLARE @from DATETIME //Current Selected datetime [the newest of the current user doing the query]
DECLARE @id INT //userID
DECLARE @tbl TABLE (from datetime, userid int)
[code]....
But for user ID 201 [all users with Type = 1], I need to run through some more code, to figure out which date we want... Which date do I want? The "from"-date that is the newest, but if "to" is just 1 day before "from", I want to select the "from" at that row instead... Example with numbers [integers] instead of Date:
Code:
From - To
5 8
10 15
16 20
I want to select "10" in the from column as the maximum "from"-integer, and not 16. Because in the "To" column we have a match in the "from" column on the condition "To + 1" [15+ 1 == 16], so then I want the "from" value where "To" equals 15, which is 10. The top row I do not want, because the difference between From and To [10 - 8 is larger than 1]...
This means that the Image shown... I am first selecting the "1", then I do some checks, if the "to" for the user is 1 day earlier than the MAX(from) I grab a new "from" value...
Code:
SELECT MIN (t1.from) FROM table as t1
WHERE
t1.from IN
(
SELECT t2.to+ 1 FROM table as t2
WHERE t2.userID = @id
)
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Jan 21, 2004
I have a table and am usuing ASP to query the database, the connection is to a MS Access table at the moment but am working to convert to SQL Server.
Question:
I need to select the last 20 records, by a date field, then from those 20 records select the 10 lowest scores.
Example is a member logs on an that member has say 80 total records in the table. Then I need to select the last 20 records entered by the date field then select the lowest 10 scores out of those 20.
I am new to more compex SQL Statements any help would be mostly appreciated!
table = HC_ID
date field = date
member_id = member
score = ScoreHC
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Nov 19, 2007
ID
Original_Date
Date1
Date2
Lowest_Date
1
12/2/07
14/02/07
18/02/2007
14/02/2007
2
01/03/07
23/3/2007
11/3/2007
11/03/2007
3
15/4/2007
14/05/2007
16/05/2007
14/5/2007
4
6/6/07
8/6/07
9/6/06
8/6/07
I have a select query that looks like this
Select table1.id, table1.original_date,
(select €¦€¦..from €¦..) as Date1,
(select €¦€¦..from€¦..) as Date2
from table1
Date 1 and Date 2 are both complex subqueries that retrieve a date from other tables. I would like another column displaying the oldest date between date1 and date2. Can anyone help?
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Aug 28, 2007
I wrote some code to insert some data into a table, if the record already exists overwrite, etc. I've never done something like this so
I am going to bang my head against that for a while. But when I did an execution plan I got
Index Seek Cost : 105 %
How do I get more than 100% and what does that mean?
Thanks,
Jim
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Mar 21, 2014
Trying to get the lowest unused value of CrewID from the below table in a efficient manner. I cant change the table structure as its from a 3rd party and it would break our support agreement.
CREATE TABLE [dbo].[Crews](
[CrewID] [nvarchar](10) NOT NULL,
[CrewName] [nvarchar](200) NOT NULL,
[CompanyID] [nvarchar](10) NOT NULL,
[StartTime] [nvarchar](50) NULL,
[Code] .....
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Jan 13, 2015
I have following input:
CREATE TABLE #tree
(
Childid varchar(20),
Parentid varchar(20)
)
INSERT INTO #tree
(Childid,ParentId)
SELECT '123' , null UNION ALL
SELECT '456' , '123' UNION ALL
SELECT '789' , '456' UNION ALL
SELECT '870' , '456' UNION ALL
SELECT '985' , '870';
Input:
Child IDParent ID
123 NULL
456 123
789 456
870 456
985 870
I am trying to populate lowest level child with path and depth...Output should be:
Child IDParent IDLast ChildPath Depth
123 NULL 789/123 1
456 123 789/123/456 2
789 456 789/123/456/789 3
123 NULL 985 /123 1
456 123 985/123/456 2
870 456 985/123/456/870 3
985 870 985/123/456/870/9854
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Feb 16, 2015
I Have 3 Tables
How to Get This Result :
ProductId - ProductConfigId (With Min Price) -MinPrice - HasGift
1 > 3 > 70 > 1
2 > 4 > 700 > 1
3 > 7 > 820 > 0
5 > 9 > 55 > 1
------------------------------------------------------
CREATE TABLE [dbo].[TBL_Product](
[ID] [int] IDENTITY(1,1) NOT NULL,
[ProductName] [varchar](100) NULL
) ON [PRIMARY]
GO
CREATE TABLE [dbo].[TBL_ProductConfig](
[Id] [int] IDENTITY(1,1) NOT NULL,
[Code] .......
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Jul 9, 2015
I have just been running a query which I was planning on improving by removing a redundant GROUP BY (there are about 20 columns, and one of the columns returned is atomic, so will mean that the "group by" will never manage to group any of the data) but when I modified the query to remove the grouping, this actually seems to slow the query, and I can't see why this would be the case.
Both queries return the same number of rows (69000), as I expected, and looking at the query plan, then they look nearly identical, other than at the start, there is a "stream aggregate" and "sort" being performed. The estimated data size is 64MB for the non-grouped query (runs in 6 min 41 secs), vs 53MB for the aggregated query (runs in 5 min 31 secs), and the estimated row size is smaller when aggregated.
Can rationalise this? In my mind, the data that is being pulled is identical, plus there is extra computation for doing an unnecessary aggregation, so the aggregated query should be unquestionably slower, but the database engine has other ideas; it seems to be able to work more quickly when it needs to do unnecessary work :) Perhaps something to do with an inefficient query plan for the non-aggregated query? I would have thought looking at the actual execution plan might have made this apparent, but both plans look very similar.
Edit: More information, the "group by" query had two aggregations on it, a count of one of the columns, and an average of another one. I changed this so that it was just "1" instead of the count, and for the average, I changed it to be the expression within the average aggregate, since the aggregation effectively does not do anything.
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Jan 26, 2008
Hello Group,
I'm still a bit new to T-SQL and am wondering how to get various LOWEST values from a table, rather than TOP values. There does not appear to be a keyword opposite of TOP in T-SQL.
My real problem is this: I know how to get the 2nd highest value, third highest value, etc...but how does one get the 2nd lowest value, third lowest value, etc?
Would anyone be able to help?
Thanks!!
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Jun 22, 2015
I have hierarchical data such as:
Id   Level   ParentId
1Â Â Â 0Â Â Â Â Â Â 1
2Â Â Â 1Â Â Â Â Â Â 1
3Â Â Â 2Â Â Â Â Â Â 2
4Â Â Â 0Â Â Â Â Â Â 4
5Â Â Â 1Â Â Â Â Â Â 4
6Â Â Â 0Â Â Â Â Â Â 6
7Â Â Â 1Â Â Â Â Â Â 6
8Â Â Â 2Â Â Â Â Â Â 7
9Â Â Â 3Â Â Â Â Â Â 8Â Â Â Â Â Â
10Â Â 4Â Â Â Â Â Â 9
11Â Â 0Â Â Â Â Â Â Â Â 11
As you can see even the parent element has parentId(in this case id = parentid)
How can I select the lowest level data in the hierarchy and get this result:
Id   Level   ParentId
3 Â Â 2 Â Â Â Â Â 2
5Â Â Â 1Â Â Â Â Â Â 4
10Â Â 4Â Â Â Â Â Â 9
11Â Â 0Â Â Â Â Â Â Â Â 11
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Aug 7, 2004
hi there,
i have a site that has high traffic on it...and ofcourse there is search on the site...
one of the search options is to search by name, so i use a stored procedure as following :
select StID,StName from StudentTable where StName like '%' + @SearchField + '%'
ofcourse it works perfectly, the problem that it has a really high cost on the sql server..
so is there any way i can search for the name and using the '%' with lower cost, noting that the name is of type varchar(100)
Thanks in advance
Mahmoud Manasrah
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Aug 8, 2003
Is there a way that we can figure out what the cost of a SQL query is via jdbc ? any command etc?
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Apr 21, 2015
I am querying a database that has hours worked listed by pay rate. I want to return sum of hours per pay rates I have been given but hours are stored in multiple columns. So If I run the below query for one worker it returns.
HoursBill_rate_1 Hours_2Bill_rate_2
34.2610.26 0.000.00
5.7410.26 5.689.67
I want to report to the business:
40hrs 10.26
5.68 9.67
The query I have written is below:
Select Sum(Hours_1) As Hours,Bill_rate_1,Sum(Hours_2) as Hours_2,Bill_rate_2--,Hours_3,Bill_rate_3
From Valid_Timesheets
Where (Department = '938' and tax_period = 3 and tax_year = 2015 AND PERSONNEL_REF = '991A001198') and
((Bill_Rate_1 = £10.26 or
Bill_Rate_1 = £9.67 or
Bill_Rate_1 = £8.27 or
[Code] ....
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Aug 13, 2007
Hi,
Does anyone know how much storage space is required in SQL Server for a char(1) compared to a varchar(1)?
If I have a table with 14 varchar(1) fields and 60652902 rows, how much is this overhead costing me in wasted space?
Answers on a postcard!
Thanks,
Richard.
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Mar 11, 2008
I have 2 different queries which produce same result. I want to know which querry is better and why?
The query is used to display the employee details who is handling the maximum number of project.
Queries are the following
Query A
Code Snippet
SELECT EmployeeDetails.FirstName+' '+EmployeeDetails.LastName AS EmpName,
COUNT(LUP_EmpProject.Empid) AS Number_Of_Projects
FROM LUP_EmpProject
INNER JOIN EmployeeDetails
ON LUP_EmpProject.Empid=EmployeeDetails.Empid
GROUP BY EmployeeDetails.FirstName+' '+EmployeeDetails.LastName,
LUP_EmpProject.Empid
HAVING COUNT(LUP_EmpProject.Empid)>0
AND COUNT(LUP_EmpProject.Empid)=(SELECT
MAX(Number_Of_Projects)
FROM (SELECT COUNT(LUP_EmpProject.Empid) Number_Of_Projects
FROM LUP_EmpProject
GROUP BY LUP_EmpProject.Empid)AS sub)
Query B
Code Snippet
SELECT LUP_EmpProject.EmpID,
EmployeeDetails.FirstName + ' ' + EmployeeDetails.LastName AS EmpName,
COUNT(*) AS NumberOfProjects
FROM LUP_EmpProject
INNER JOIN EmployeeDetails
ON LUP_EmpProject.EmpID = EmployeeDetails.EmpID
GROUP BY LUP_EmpProject.EmpID,
EmployeeDetails.FirstName + ' ' + EmployeeDetails.LastName
HAVING COUNT(*)=(SELECT
MAX(Number_Of_Projects)
FROM (SELECT COUNT(LUP_EmpProject.Empid) Number_Of_Projects
FROM LUP_EmpProject
GROUP BY LUP_EmpProject.Empid)AS sub
Please Help!!!!!!!!!!!!!!!!1
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Sep 28, 2006
I've converted most SQL Server databases to unicode since the AS 400 stores data in unicode (UTF-16). So far the only difference I see is that running queries to text in Unicode takes a lot longer, and UTF-16 files are 4x as large as Cp1252 files.
Any way to get the file sizes / query times of old with Unicode?
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