TOP N Value Per Category

Oct 26, 2006

Hello

I am using sql server 2005.

I have two tables as described below.

Table1

UserID UserSales
---------------------
1 10
2 13
3 17
4 19
5 21
6 10
7 12
8 11
9 31
10 23
11 24
12 10
13 16

Table2

UserID Country
----------------------
1 Canada
2 Canada
3 Canada
4 Canada
5 Canada
6 USA
7 USA
8 USA
9 USA
10 USA
11 UK
12 UK
13 UK


I want to get top 2 UserSales for each country and remaining should be
displayed as Total as Others for that country.

Can someone please help me with this query?

Regards

Amit

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Category/Parent Category Design And Querying

Jun 29, 2005

Hi,

I have a simple table:

Categories
----------
CategoryID
ParentID
Name

I want to associate my Products to a category so that I can search by category....ok.  If I just have a simlpe table:

CategoryProducts
-------------------
CategoryId
ProductId

I can link a product to a category.  Now, if I just link a product to a single category, such as the bottom leaf category:

Self Help / Personal Development / Spiritual / Meditation

I would link a product to the Meditation category.  However if I
click on Self Help while browsing, I want to see all items underneath
Personal Development, Spiritual and Meditiation.  So my question
is is this a good way to store the product-category relationships, or
should I put many entries into CategoryProducts to keep the queries
simlpe and faster? Are they faster doing it this way? In this way there
would be 4 entries for a product in meditation.  My personal idea
is that adding all entries up a tree arm of a category path will be
cumbersome to manage, but it does solve the problem of clicking on Self
Help and seeing all products that exist within sub-categories.  I
am sure an SQL query would be able to work this out, but I dont know if
performance would be something to consider on an ecommerce site? Are
there any patterns fo rthis stuff - seems a reasonably repeatable
pattern for business sites?

Thanks,

jr.

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Sep 21, 2006

I used to do this with classic asp but I'm not sure how to do it with .net.Basically I would take a table of Categories, Then I would loop through those.  Within each loop I would call another stored procedure to get each item in that Category. I'll try to explain, Lets say category 2 has a player Reggie Bush and a player Drew Brees, and category 5 has Michael Vick, but the other categories have no items.Just for an example.. Category Table: ID   Category1      Saints2      Falcons3      Bucaneers4      Chargers5      FalconsPlayer Table:ID    CategoryID   Player                 News                                Player Last Updated1            1           Reggie Bush       Poetry in motion                                9/21/20062            1           Drew Brees         What shoulder injury?                        9/18/20063            5           Michael Vick       Break a leg, seriously.                       9/20/2006 Basically I would need to display on a page:SaintsReggie BushPoetry in MotionFalconsMichael VickBreak a leg, seriously.So that the Drew Brees update doesnt display, only the Reggie Bush one, which is the latest.I have my stored procedures put together to do this.  I just don't know how to loop through and display it on a page.  Right now I have two datareaders in the code behind but ideally something like this, I would think the code  would go on the page itself, around the html.

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Dec 22, 2005

Let's say you a 1000 records in the Employees table, who are spread over 40 different cities.
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Do I have to loop with  a  Count(*)   for each CityID, or something ?

There must be a more straightforward method.

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Mar 6, 2006

hi.

I have a table to store salesman's performance..

as you can see at structure.jpg, Tom sold total 18 Processors (5 different modals) and sold 11 mainboards (4 different modals)

I want to report that
what are the TOP 3 Processor and Mainboard modals that Tom sold with the same query

I tried different group by methods. also subqueries.
I could't do

you see the results I need at result.jpg

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Sep 25, 2006

i am using this code :

SELECT MAX(user) AS lastuser, category
FROM journal
GROUP BY category
HAVING (COUNT(category) > 1)

it works but returns 1 line by category >1

i need all the user (all the rows) HAVING (COUNT(category) > 1) , not only 1

if 1 category has only 1 user i must not keep it


i am not shure to be clear :-)

thank you for helping

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Feb 25, 2004

What are the thoughts on using a categoy table? What I mean by this is to have a table used to hold simply a category identifier for other table(s).

Eg:

Hardware Table
Hadware (PK) | Category (FK) | Description | Finish | etc....
------------------------------------------------------------------------------
P1 | Plate | 4"x4"x1/4 plate | Painted |

HardwareCategories
Category (PK)
-----------------
Plate
Channel
Angle


Should this be done or simply provide a category field in the hardware table? I like the extra table because it kind of ensures that a user doens't add a plate with a category value "Plate", another user adds "plate", and another user adds "Plates", etc....

What are your thoughts if any?

Mike B

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Jan 27, 2008

I'm trying to remove a read only/stand by database that I believe was a messed-up attempt at log shipping. When I go through the interface it says 'cannot remove database because it is set up for replication'. If I try and 'directly update' the sys tables (yea I know you can't do that anymore) I get the error:


Msg 259, Level 16, State 1, Line 1

Ad hoc updates to system catalogs are not allowed.



So my dilema is I just want to delete a database that was attempting to do log shippinig and is now stuck in read only/standby. How can this be done in SQL 2005?

Thanks,
Phil

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Feb 6, 2004

Hi everyone -

I am building from the Time Tracker Start Kit, trying to get a better feel for how MS thinks we should do things.

In my editing, I have built a new Stored Procedure, trying to pull the newest entries for a specified person.

I have the following that will return all entries for a specific person, sorted by date, newest first:


SELECT
EntryLogID, TT_EntryLog.Description, Duration, EntryDate, TT_EntryLog.ProjectID AS ProjectID,
TT_EntryLog.CategoryID AS CategoryID, TT_Categories.Abbreviation AS CategoryName, TT_Projects.Name AS ProjectName,
ManagerUserID, TT_Categories.Abbreviation AS CatShortName
FROM
TT_EntryLog
INNER JOIN
TT_Categories
ON
TT_EntryLog.CategoryID = TT_Categories.CategoryID
INNER JOIN
TT_Projects
ON
TT_EntryLog.ProjectID = TT_Projects.ProjectID
WHERE
UserID = @UserID
ORDER BY
EntryDate Desc


This will return something like:


EntryLogId Description Duration EntryDate ProjectID CategoryID CategoryName ProjectName ManagerUserID CatShortName
14Can type date in date... .00 2004-02-04 10:28:00116Pros ITS Project Management App 3 Pros
12Changed "Entry Date"... .00 2004-02-03 13:28:00116Pros ITS Project Management App 3 Pros
13Added default button ... .00 2004-02-03 00:00:00116Pros ITS Project Management App 3 Pros
11Removed hours per p... .00 2004-02-03 00:00:00116Pros ITS Project Management App 3 Pros
6Isn't this cool .00 2004-02-02 00:00:00229Pros Knowledge Base 3 Pros
9Added week-by-week... .00 2004-02-02 00:00:00116Pros ITS Project Management App 3 Pros
10Fixed Update comma... .00 2004-02-02 00:00:00116Pros ITS Project Management App 3 Pros
1Built initial framewor... 6.00 2004-01-30 00:00:00116Pros ITS Project Management App 3 Pros
5Adding up to 8 hours... 2.00 2004-01-30 00:00:00229Pros Knowledge Base 3 Pros
3Debugged - fixed a f... 1.00 2004-01-23 00:00:00229Pros Knowledge Base 3 Pros



What I would like to accomplish is to return only the newest entry for each ProjectID (so in the above example, there would only be 2 entries, EntryID 14 and 6)

Any ideas?

Thanks in advance-

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Nov 8, 2005

Hello,

I am trying to select the last entry (by date) for each category in a table.

For example, if my table had the following fields;

id, category, product, datePosted,....

...how would I select the last product for each category posted by date?

Any guidance is appreciated.

Thanks,
AC

Probably a simple solution, but can't find it my brain right now!

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Jun 6, 2012

I was able to get a running some to work, but i cant seem to get it to restart for each category... for example this is what I have...

ID Name Return Run. Sum
1 aaa 0.1 0.1
2 aaa 0.2 0.3
3 aaa 0.3 0.6
4 aaa 0.1 0.7
5 bbb 0.5 1.2
6 bbb 0.4 1.6
7 bbb 0.1 1.7
8 bbb 0.3 2
9 bbb 0.2 2.2

How do i get it to start over at bbb??? Here is the code in access 2010:

Format(1000+(DSum("Return","Monthly Performance Dates","[ID]<=" & [ID] & "")*1000),"00.00")

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Sep 17, 2013

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----Age Group---------
Category: Age <25 age 25-35 age 45-50 Total
Exec 2 1 3
Non Exec 10 5 5 20

Grand total: 23

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Dec 1, 2006

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Aug 30, 2007

I got 3 table below

Region
---------------
RegionID
ParentID
RegionName

Cuisine
--------
CuisineID
CuisineName

Restaurant
-----------
RetaurantID
CuisineID
RegionID

Data

RegionID RegionName ParentID
1 RN_1 Null
2 RN_2 Null
3 RN_1_1 1
4 RN_1_2 1
5 RN_2_1 2

CuisineID CuisineName
1 CU1
2 CU2

RestaurantID CuisineID RegionID
1 1 4
2 1 2
3 2 5
4 1 3


What I would like is to write a stored procedure to browse the restaurant by either regionname or cuisinename.
I tried to create the view from those three table and create the stored procedure to search from the view based on criterias
I tried to search for regionName = RN_1 & CuisineName = 2 the result is empty. It is true because there is no restaurant under that region however what I want to have is list all restaurants under that RegionName children e.g
RN_1 has RN_1_1 & RN_1_2 & RN_1_3 so the result should be displayed as

RestaurantID CuisineID RegionName ParentID
1 1 RN_1_2 1
4 2 RN_1_1 1

Could anyone help me to do so. Thank you

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Jul 25, 2007

Everyone,



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Thanks

Tim

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Apr 20, 2008

Hi

I new to sql procedures and I need your advice on below subject. Thanks in advance.

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therefore I created categories table and added 3 fields;

catid int (primary and autonumber)
catname string 50 will be equal to category name in products table
parentid int (if it is a parent category, it will be equal to 0 otherwise if it is a subcategory it will be equal to parentcatid)

so instead writing a vb program I like to ask your advice on better solutions.

please help

Also I am using sql express 2005 and I wanted to practice (learn) sql DTS. is there any way I can download this package and work it with my system?

thanks again
Cemal

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sum([Total VtM]) as 'Total Sales'
from RegData
group by [Parent Name],[ID],[Year],[Sales Name]
order by [Total Sales] desc

I need to modify this query to get the top 5 of each category based on Total Sales amount.

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Mar 16, 2007

Note:Codes
with in [] are optional u need not to read

 

I
am getting Incorrect syntax near '@Name'.

 

 

[

Dim strSQL As String

        Dim
param As New
SqlParameter

        Dim
AdaCategory As New
SqlDataAdapter

        Dim cmd as New SqlCommand()

 

]

 

 

 

strSQL = " SELECT CategoryID  FROM Category   WHERE Name
like %@Name%"

 

 

I
am getting Incorrect syntax near '@Name'.

 

I
also tried

 

strSQL = " SELECT CategoryID  FROM Category   WHERE Name
like %’@Name’%"

 

 

still Error :(

 

 

 

 

 

 

 

 

 

 

 

 

 

 [  cmd.CommandText = strSQL

param =
cmd.Parameters.Add("@Name",
SqlDbType.NVarChar)

            param.Value = catId

            cmd.CommandText = strSQL

           
AdaCategory.SelectCommand = cmd

 

AdaCategory.Fill(DTable)

 

]

 

 

 

 

Help me please……….

 

 

 

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Apr 16, 2007

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David

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Sep 11, 2007

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 For reference, all Subcategories in a Category have reference to that CategoryID, and all Items in a Subcategory have a "SubcategoryID" field.  I understand that I need to traverse the tables and remove all Subcategories with the CategoryID being deleted, but since the Items do not have a reference to the CategoryID, how would I delete those as well?
 
Thanks to whoever can help me out here!

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Dec 12, 2007

Hi, 
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second table stored item_id,item_name and proce 
3rd table stores category_id and item_id   
I need to display the values like this   
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with first parent category ans ites items should be displayed and next sub category and its item   
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i.e Category1 
       Category11 
        Category111 
any help with the query would be much appreciated, I wrote the query something like this.... 
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Jul 25, 2013

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My table which is structured like this:

CREATE TABLE Attendance (
DOP_ID int,
Category varchar(20),
Title varchar(20),
Date datetime,
Hours int,
)

[Code] ....

I need an end result which looks like this:

ID Category Week of Total Hours
4504498 GED Program 7/1/2012 26
4504498 GED Program 7/8/2012 23
4504498 High School 7/1/2012 19
4504498 High School 7/8/2012 28
9201052 Non Educational 7/15/2012 30

ID Day_120_Hours_Reached
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356485 11/15/2012
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-Scool

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Jul 20, 2005

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May 22, 2008



I have to identify missing records from the example below.








Category
BatchNo
TransactionNo

CAT1
1
1

CAT1
1
2

CAT1
2
3

CAT1
2
4

CAT1
2
5

CAT1
3
6

CAT1
3
7

CAT1
3
8

CAT1
5
12

CAT1
5
13

CAT1
5
14

CAT1
5
15

CAT1
7
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CAT2
1
1

CAT2
1
2

CAT2
3
6

CAT2
3
7

CAT2
3
8

CAT2
3
9

CAT2
4
10

CAT2
4
11

CAT2
4
12

CAT2
6
14


I need a script that will identify missing records as below







Category
BatchNo

CAT1
4

CAT1
6

CAT2
2

CAT2
5

I do not need to know that CAT1 8 and CAT2 7 are not there as they potentially have not been inserted yet.

I idealy want a nice clean SQL statement and do not particually want to insert new table's or triggers although views i Can deal with to an extent.

Considerations
up to 50,000 records added per day!!!
Only need script to run once a day and I have insert dates to help me.
Only 12 Categorys
Batch numbers always start at 1 for different categorys

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Category value Data

A 11
B 13
C NULL
D NULL
E 14

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Any ideas on how to accomplish?

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Nov 27, 2007

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Mar 30, 2008

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Categories========ID intParentID intCatName varchar(30)Items====IDCategoryIDItemID
There is a third table that links to items through ItemID, but this is not important for this problem!
What I want to do is create a stored SQL procedure. This procedure simply pulls rows from the category table and counts the number of items that are in it. This is straighforward enough using COUNT as a "virtual column", but the difficulty is counting the items in the category but also the items in any subcategories.
An end result with two top-level categories and three subcategories in each might look like:
- Category 1 (20)---- Subcategory 1.1 (10)---- Subcategory 1.2 (5)---- Subcategory 1.3 (5)- Category 2 (14)---- Subcategory 2.1 (3)---- Subcategory 2.2 (4)---- Subcategory 2.3 (7)Hence the difficult bit is getting the total number in brackets for each category with subcategories.
What I have at the moment is:
SELECT Categories.ID, Categories.CategoryName, Categories.ParentID, (SELECT COUNT(*) FROM Items WHERE Items.CategoryID = Categories.ID) AS ItemTotalFROM Categories
What I would like is something along the lines of (pseudocode):
SELECT Categories.ID, Categories.CategoryName, Categories.ParentID, (SELECT COUNT(*) FROM Items WHERE <Item is in category or subcategory>) AS ItemTotalFROM Categories
I don't particularly want to use temporary tables and I definitely do not want to do any of this retrieval in my application - it needs to come straight from the database.
Thanks!

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90210 S1 5
90210 S2 10
90210 S3 2
90210 S4 3
10221 S1 24
10221 S2 3

And I want the end result to be each unique zip code with the category having the maximum value, for example 90210 S2, 10221 S1, etc

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Feb 22, 2007

SELECT DISTINCT Image.ImageID, Image.JobID, Image.Filename, Tag.Name,
Tag.SortOrder, TagCat.name

FROM Image, JobTag, Tag, Job, Tagcat

WHERE Tag.TagID = JobTag.TagID
AND Image.JobID = Job.JobID
AND Job.JobID = JobTag.JobID
AND TagCat.TagCatID = Tag.TagCatID

ORDER BY Image.ImageID, Tag.SortOrder


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Jan 7, 2015

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Declare @Tmp_SKUCatValue Table(
SKU char(7)
,Cetegory Int
,Unit_cost Decimal
);
INSERT INTO @Tmp_SKUCatValue (SKU, Cetegory,Unit_cost)
Values
('sku-001',1,120)

[code].....

The result is as

SKU----------UCost_Cat1-----UCost_Cat2
sku-001------120--------------222
sku-002------126--------------228
sku-003------132--------------234
sku-004------138--------------240
sku-005------144--------------246
-----------------------------------------------------------

but missing the following lines,

SKU----------UCost_Cat1-----UCost_Cat2
sku-006------333--------------null
sku-007------null--------------444

Is ok to not show sku-008 as it is not part of category 1 or 2?

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