Select Distinct One Some Fields, But Return All Feilds
Jul 23, 2005
I was curious...
Is there a way to select distinct on a combination of some fields and
the for each record returned also get the other fields of an
arbitrarily chosen record matching the fields in the distinct record.
For example, if I have a select distinct on say three fields:
SELECT DISTINCT Code1, Code2, Code3
but the table also has other fields, maybe Foo1 and Foo2, and I want
Foo1 and Foo2 to also be displayed. Since there may be multiple
records that match a particular Code1, Code2, Code3, then I just want
one of those to be arbitrarily chosen.
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Oct 17, 2006
Hi
I am trying to write a query that will return a full record with a particular distinct field (the rest of the record being the first such record that includes the distinct field).
For example, for the following:
Fruit Like? Colour
Apple Y Green
Orange N Orange
Banana Y Yellow
Grape Y Green
Grapefruit N Yellow
I would want to return (assuming Colour was the distinct field):
Fruit Like? Colour
Apple Y Green
Orange N Orange
Banana Y Yellow
How do I do this? I've tried using a join (of all different kinds) with a subquery that uses SELECT DISTINCT but this doesn't seem to work. I've tried GROUP BY but none of the aggregate functions seem to just take the first found field.
Thanks for any help you can offer.
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Jul 28, 2015
I have a code that gives me the sample I am looking for, but only displays one field.
NuminHH is my field
7320EN_Var is my Table
Proof is the new table I want to create.
SELECT DISTINCT [NuminHH] INTO Proof
from 7320EN_Var
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Mar 22, 2006
I have a table in my MS SQL 2000 database called News which has a field caled NewsDate. This is a standard Date field which stores the info in this format: 3/1/2001.
I want to create a query that returns one row for each year that there is a story.
For example, if I had this data...
3/1/2001, 6/27/2003. 9/17/2003, 1/1/2006, 4/5/2006
the query would return this result:
2001
2003
2006
This is the query I've started with:
SELECT DISTINCT NewsDate FROM News ORDER BY NewsDate DESC
What modifier can I apply to the NewsDate field to extract JUST the year from the table? If this were ASP I would try something like Year(Date), but, of course, I can't do that here.
Is this even possible? I've been looking up date functions, but haven't found anything that will work in a select statement. ANY and ALL advice will be greatly appreciated.
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Dec 6, 2004
Hello,
I m writing a stored procedure to query a table Population that has the following fields - CityId, CityName, Plus0, Plus10, Plus20, Plus30, Plus40, Plus50, Plus60, Plus70, Plus80. The field Plus0 contains the number of people of age > 0 living in the city, Plus10 contains the number of people of age > 10 living in the city and so on. Given the city id and age groups like 20To40, 50To60, 40Plus, etc., I should be able to query the number of people in the city corresponding to the requested age group. Note that if the requested age group was 20To60, I need to make use of only 2 fields Plus20 and Plus60 in the table to compute this value. And if the requested age group was 40Plus, then I need only the value in the field Plus40. The problem is that a wide variety of age groups can be requested like 0Plus, 10Plus, ... , 80Plus, 0To10, 0To20, 0To30, .... 70To80.
Which is the most effecient way to handle this ?
1. Have a stored procedure that returns all the fields even though only 1 or 2 of them would be actually used ?
In this case, if I returned data for a large number of cities then there would be a lot of unnecessary information that was returned by the query. Lots of data would be passed through the network though most of it would not be used.
2. Have a stored procedure that takes in parameters @Plus0, @Plus10, @Plus20, .. @Plus80 that are bits indicating whether the field was required or not and then using a CASE statement to return values for a field only if the corresponding bit parameter was set, and returning NULL if the corresponding bit paramter was not set ?
In this case, I would be returning NULL for all those fields that were not required for a particular age group. This would save some network bandwidth, wouldn't it ?
3. Pass in the age group itself (ex: 0To20) as a parameter to the stored procedure and have lots of IF statements, one for each age group, that return only the fields that are needed for that age group.
This leads to a lot of code repitition.
4. Use a similar approach as above but use dynamic SQL queries to avoid code repitition.
But using dynamic SQL queries can affect the performance of the stored procedure as they need to be compiled each time.
5. Any other possible approaches ??
Looking forward to your responses,
Thanks much,
bmgun.
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Jul 6, 2007
Hi, I have the following script segment which is failing:
CREATE TABLE #LatLong (Latitude DECIMAL, Longitude DECIMAL, PRIMARY KEY (Latitude, Longitude))
INSERT INTO #LatLong SELECT DISTINCT Latitude, Longitude FROM RGCcache
When I run it I get the following error: "Violation of PRIMARY KEY constraint 'PK__#LatLong__________7CE3D9D4'. Cannot insert duplicate key in object 'dbo.#LatLong'."
Im not sure how this is failing as when I try creating another table with 2 decimal columns and repeated values, select distinct only returns distinct pairs of values.
The failure may be related to the fact that RGCcache has about 10 million rows, but I can't see why.
Any ideas?
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Jul 5, 2001
My table contains customer records with multiple records per customer. As a result of a query, I´m only interested in one record per customer with the highest value of a certain field in the record.
I thought of using DISTINCT, but can I use DISTINCT on a subset of all fields? Or sort the table in a certain way that the query result only shows the first unique records for a customer.
Other ideas are welcome to.
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Feb 11, 2014
How can I use a Distinct or Group by statement on 1 field when calling All or at least several ones.
Example:
SELECT id_product, description_fr, DiffMAtrice, id_mark, id_type, NbDiffMatrice, nom_fr, nouveaute
From C_Product_Tempo
And I want Distinct or Group By nom_fr
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Jul 13, 2006
Hello !
for MS SQL 2000
SELECT tableA.idA, tableB.idB,tableB.ColX,tableA.ColA,
tableA.ColB, tableA.ColC
FROM tableB RIGHT OUTER JOIN tableA ON tableB.idB = tableA.idA
I want to do a DISTINCT on
tableB.ColX, tableA.ColA, tableA.ColB
to return only the rows tableB.ColX, tableA.ColA, tableA.ColB which are differents
thank you for helping
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Aug 22, 2007
Hi,
How do I ensure that DISTINCT values of r.GPositionID are returned from the below??
Code Snippet
SELECT CommentImage AS ViewComment,r.GPositionID,GCustodian,GCustodianAccount,GAssetType
FROM @GResults r
LEFT OUTER JOIN
ReconComments cm
ON cm.GPositionID = r.GPositionID
WHERE r.GPositionID NOT IN (SELECT g.GPositionID FROM ReconGCrossReference g)
ORDER BY GCustodian, GCustodianAccount, GAssetType;
Thanks.
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Apr 23, 2008
Hello all,
I am using INNER JOIN to connect 2 tables together but I wish it to return distinct columns instead of repeating itself !
eg.
Current output would be:
UserID Name UserID OrderID
1 John 1 5
2 Bob 2 6
I want it to be:
UserID Name OrderID
1 John 5
2 Bob 6
I need to use SELECT * as there are many many columns and wish to save time :)
Cheers,
James
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May 5, 2008
I am trying to create a query that will find all the records that have the same value multiple times in the a column called phonenumber.
How do i return disticnt records having count greater than 1
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Aug 17, 2006
I need to somehow filter the results of my stored procedure to return the distinct "OrderNum" values. I'm using SQL database and I'm look for a way to alter the results from the stored procedure. My stored procedure rptOpenOrderLines currently returns all invoices (items under a OrderNum). I want to somehow filter those results to return one and only one of those "OrderNum" variables from the invoices. The tricky part is that I need to somehow find a way to do this without going into my database and directly altering the SQL stored procedure. I would be happy for any recommendations/ideas. Thanks!
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Feb 16, 2007
Hello,
Is it possible to return all the field names of a database. I do not want the data rows. Just a list of fields in the databse.
Thanks
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Apr 28, 2004
hi all
having worked with access in the past and getting stumped by the fact a table could only hold 256 feilds....... does sql server have any such limit????
thanks
cq
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Jun 3, 2015
I am new to SQL. I added a calculated field to my dataset with and expression to calculate efficiency.
My expression is as follows: =Fields!EstTotLbrHrs.Value/Fields!ActTotLbrHrs.Value
In some cases my value for ActTotLbrHrs is 0, so it returns #Error
How do I return "N/A" for fields with ActTotLbrHrs = 0
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Oct 25, 2005
hi all,
can anybody help in combining all the mentioned queries into a single query so as to display all fields in a row.
1.number of imported imported animal type:
select count(*) as import_lic_no from appln_clip ac,consign_animal c,pet p
where ac.ac_id=c.ac_id and p.pet_no=ac.clip_id and ac.appln_id like 'A8%'
2. number of imported animal type that are licensed:
select count(*) as lic_imp_ani_type from pet p,clip c where p.pet_no=c.clip_id
3.percentage: 2/1*100
select percentage=
((select count(*) as lic_imp_ani_type from pet p,clip c where p.pet_no=c.clip_id)
(select count(*) as lic_imp_ani_type from pet p,clip c where p.pet_no=c.clip_id))*100
4.local animal type:total pet records - 1
select number=
(select count(*) from pet p) - (select count(*) from appln_clip ac,consign_animal c where ac.ac_id=c.ac_id)
5.local animal type that are licenced:total pet records-2
select number1=
(select count(*) from pet p) - (select count(*) from pet p,clip c where p.pet_no=c.clip_id)
6.percentage: 5/4*100
select percentage=((select count(*) from pet p) - (select count(*) from pet p,clip c where p.pet_no=c.clip_id)/
(select count(*) from pet p) - (select count(*) from appln_clip ac,consign_animal c where ac.ac_id=c.ac_id))*100
thx,
vani
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Jan 18, 2008
Here is a very basic question that I have.
I have two tables, A and B. Both have a customernumber and a batchid. This combination is unique in both tables.
How can I pull back the records from table A that do not have a corresponding combination in B?
I know I could find the ones that do match and then exclude them using an inner join and subquery, but is there a simpler way?
THANKS!
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Oct 22, 2004
Hi there!
There is a feild in my table that contains the city, state and zip, all in the same feild. I was wondering how would be the best way to devide all that info up into 3 feilds? i really don't know how I would go about it since there are cities that can be comosed of 2 or more words. Here is some sample data. I hope someone can help.
SOUTH EL MONTE CA91733617
BOSSIER LA71172
GARDENA CA90249107
MILWAUKEE WI53216
PARIS IL61944
DUQUOIN IL62832
REDWOOD FALLS MN56283
AUBURN ME04210
IRWINDALE CA91706048
PORTLAND OR97202901
PORTLAND OR972028901
ANAHEIM CA928071735
KENT WA98032
CRYSTAL LAKE IL60014611
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Apr 18, 2007
Hi,
I am new to sql and is working with sql server managment 2005 +c# 2005.
My application needs to create a blockdiagram sort of thing say
if in my database i got a table 'Addition' with 'a', 'b', 'c',and the primary key addition_id, and c is related to a and b as c = a+ b.
there is stored procedure name usp_addition which contains this relation. Each time any insert or update is done this sp is executed and all the values are updated for accordingly.
My problem starts in the front end where i need to draw the graphical representation of table addition.
In this graphical representation, I need to draw the labels a, b, c and the arrows from a and b which will connect to c, showing that c has a, b as inputs.
I got the label using dataset and datacolumns but hte problem is how to create the arrows the name of labels (i.e my column names from which the arrow should start and end)
How does I get the information that c as two inputs a, b. I dont need the values since i just want to view the columns in table and which column is input to another column.
Since I need to do this dynamically because my tablename, and the number and name of column would differ does any body knows how to do this.
Priyadarshini
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Sep 9, 2004
I have three tables X,Y,Z. Table 'Y' is having foreign key constraints on tables 'X' and 'Z' (which happen to be primary key tables).
I would like to run a query in which I can retrieve rows from Table 'X' only if the matching rows in Table 'Y' have "ALL" their matching rows available in a simple query being run on Table "Z".
The "All" part is very important.
For more clarification, let me give you an example. Table "X" is equivalent to a mathematical "Equation" table which consists of an equation made up of several "Fields". These fields are stored in Table "Z". Table "Y" contains the primary keys from Tables "X" and "Z". i.e. Table "Y" determines what fields are required for an equation to be complete.
I am having a query "Q" on Table "Z" (Fields table) which returns me a bunch of Fields. Now, on the basis of these fields, I want to retrieve only those Equations (Table "X") which have "ALL" their required Fields present in the bunch retrieved by the Query "Q".
I hope I am clear enough.
Does anyone have any solutions???
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May 22, 2015
Im doing a report on total sales, however my statement below will return values that are equal to both fields ONLY.For example I want to do a query using two text boxes 'from' and 'to 'and count the total sales between the product dates 'Veh_Tyres_Date' and Veh_Parts_Date and 'Veh_Tyres Price' and Veh_ Parts Price'. however it works but if for example I do a search for 01/05/2015 from 31/05/2015 it will not return anything if the second field doesnt contain a sales date between that period.
SELECT tblVehicles.Veh_Parts, tblVehicles.Veh_Parts_Date, tblVehicles.Veh_Tyres, tblVehicles.Veh_Tyres_Date
FROM tblVehicles
WHERE (((tblVehicles.Veh_Parts_Date) Between [Enter From Date] And [Enter To])
AND ((tblVehicles.Veh_Tyres_Date) Between [Enter From Date] And [Enter To]));
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Oct 16, 2015
I am working on a query that is quite complex. I need the query to return as part of the fields a field that will contain the total percentage of tickets in a version.The query is below
select cat.name as name,count(distinct bug.id) as numberOfBugs,cast(count(bug.id) * 1000.0 / sum(count(bug.id) * 10.0) over() as decimal(10,2))/100 AS qnt_pct, vers.version, dateadd(s,vers.date_order,'1/1/1970') as "Release_Date"
from mantis_bug_table bug
INNER JOIN mantis_category_table cat on cat.id = bug.category_id
LEFT OUTER JOIN mantis_project_version_table vers on vers.project_id = vers.project_id and vers.version = bug.version
[code]....
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Dec 3, 2004
Hello Group
I am having a little trouble with a search. I have 12 checkbox controls and 12 textbox controls. I want to be able to choose which textbox to query from. Most of the time the search may be from one or a couple of textboxes. My problem is I can get the SQL String right. Below is what I have for a string. I know I could write an SQL string for every possible combination and put in all 144 in a SELECT CASE, but I would think there is an easier way to do this. Is there anything that would let me build a SQL string depending what checkbox are checked true?
Dim SQL_SL As String = "SELECT * FROM BuildZone" & _
" WHERE Parcel = '" & strPercelS & "'" & _
" ORDER BY Parcel Asc" & _
" SQL_SL As String = SELECT * FROM BuildZone" & _
" WHERE fldNameLast = '" & strNameLastS & "'" & _
" UNION" & _
" SQL_SL As String = SELECT * FROM BuildZone" & _
" WHERE fldDateMonth = " & intDateYearS & "" & _
" AND fldDateYear = " & intDateYearS & "" & _
" UNION" & _
" SQL_SL As String = SELECT * FROM BuildZone" & _
" WHERE fldNameLast = '" & strNameLastS & "'" & _
" UNION" & _
" SQL_SL As String = SELECT * FROM BuildZone" & _
" WHERE fldPermitNum = " & intPermitS & "" & _
" UNION" & _
" SQL_SL As String = SELECT * FROM BuildZone" & _
" WHERE fldStructureType = " & intStructureTypeS & "" & _
" UNION" & _
" SQL_SL As String = SELECT * FROM BuildZone" & _
" WHERE fldConstructionCost >= " & intCCost1S & "" & _
" AND fldConstructionCost <= " & intCCost2S & "" & _
" UNION" & _
" SQL_SL As String = SELECT * FROM BuildZone" & _
" WHERE fldRange = " & intRangeS & "" & _
" AND fldTownship = " & intTownshipS & "" & _
" AND fldSection = " & intSectionS & "" & _
" UNION" & _
" SQL_SL As String = SELECT * FROM BuildZone" & _
" WHERE fldZoningDistricts = " & intZoneS & "" & _
" UNION" & _
" SQL_SL As String = SELECT * FROM BuildZone" & _
" WHERE fldTwsp = " & intTwspS & "" & _
" UNION" & _
" SQL_SL As String = SELECT * FROM BuildZone" & _
" WHERE fldRWD = " & intRWDS & "" & _
" UNION" & _
" SQL_SL As String = SELECT * FROM BuildZone" & _
" WHERE fldWW = " & intWWS & "" & _
" UNION" & _
" SQL_SL As String = SELECT * FROM BuildZone" & _
" WHERE fldAccessApplic = " & intAccessAppS & ""
Thanks
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Dec 1, 2006
shibu writes "I have a table 'manage_user_types' and its primary key is 'Category_ID'. There is another field 'Category_Parent_ID' which refers the 'Category_ID' in the same table. And one more field is 'Category_Name' which is related to 'Category_ID'. ie.when displaying the table in front end, 'Category_Name' is displayed under 'Category_Parent_ID'. I want to sort the table with 'Category_Name' when clicking the 'Category_Parent_ID' to sort. What should i do?"
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Dec 3, 2013
I need to associate aggregate gross_revenue with calendar year, but do not have a date field that reflects payment dates, just contract periods a start_date and an end_date. The contract periods are typically 1 or 2 years and can start at any time I.e start_date 6/1/2012, end date 5/31/13. I think by finding the number of days that fall in each calendar year and storing in a temp table, I can create a simple formula to associate revenue to each year.
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Oct 17, 2007
Hello,
I would like create in a table (A) a column with a formula's data.
In this formula I would like implement 2 fields from a Table (B)
So the formula can be :
[TABLE_B].[FIELD1] + [TABLE_B].[FIELD2]
Is it possible?
We can call 2 fields from a other table?
Thank you
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Feb 19, 2014
How do I properly write a CASE statement for the following business logic:
I want three of the following fields to be true in order to return 'Y'.
For example:
If field name 'Accepted' = 1 AND field 'StepNo' = '1' and field 'Visit' = 'V1'
Otherwise, I want it to return 'N'.
I have tried the following code below and it is not working.
, CASE WHEN Accepted = '1' AND StepNo ='1' AND Visit ='V1'
THEN 'Y' ELSE 'N' END AS 'StatusQ (Col N)'
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Oct 16, 2006
OK I have a Forum on my website make up of 3 tablesTopisThreadsMessageI show a list of the 10 most recent Changed Threads. My Problem is that my Subject field is in the messages Table, IF I link Threads to Messages then try to use Select Disticnt I get mutliple Subject fields as the messsges are not unique (obvisally) So I want to get the top 10 Threads by postdate and link to the Messages table to get the Subject headerAny help? Or questions to explain it better?
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Apr 19, 2007
Hello Everyone
Hopefully someone can help me create a SQL statement for this.
I need the ff: fields
Prov_ID, Record_ID, PROV_NAme, LOC_city, LOC_Zip_CODE, Specialty
Let say I have a table.
Prov_ID, Record_ID, PROV_NAme, LOC_city, LOC_Zip_CODE. Specialty1000 999 Mike James Plano 75023 Internal Medicine1000 998 Mike James Allen 75021 Internal Medicine3333 700 John Smith Arlington 70081 Dermatologist3333 701 John Smith Dallas 72002 Dermatologist2222 630 Terry Walker Frisco 75001 Optalmologist2222 632 Terry Walker Dallas 76023 Optalmologist4444 454 Tim Johnson San Anontio 72500 Internal Medicine 4444 464 Tim Johnson Frisco 72660 Internal Medicine
I want to select only "one" instance of the provider it doesnt matter what is selected
either the first address or the second address.
It should show
Prov_ID, Record_ID, PROV_NAme, LOC_city, LOC_Zip_CODE. Specialty1000 999 Mike James Plano 75023 Internal Medicine3333 700 John Smith Arlington 70081 Dermatologist2222 632 Terry Walker Dallas 76023 Optalmologist4444 464 Tim Johnson Frisco 72660 Internal Medicine
And yes, the table is not Normalized..Is there anyway I could get away with it without having to normalize?
Thanks
Lorenz
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Apr 8, 2008
Is their a way to select all items from a table that are not distinct? Meaning, I want to know which items in a column occur more than once.
Example:
Suppose we have a table with student names, ss# and address. I want to display only records where their is more than one studen with the same name. So for example their could be ten people with the name of "Mike" in a class?
Ralph
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May 31, 2008
I have a table myTable (ID, Year, Name, Note)data in this table:ID Year Name Note 1 2008 Petter hdjhs2 2008 Nute jfdkfd3 2007 Suna dkfdkf4 2007 Para jfdfjd5 2009 Ute dfdlkf Please help me to Select DISTINCT [Year]]ex:1 2008 Petter hdfdfd3 2007 Suna fdkfdk5 2009 Ute fkdfkdfd Thank!
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Jun 25, 2001
Can I run Select distinct on one fieldname only while I'm selecting more than one fielname, like
Select Distinct col1, col2, col3 from table
I need distinct on col1 only and not on the other 2 columns, is it possible.
Thanks
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