I have a page that shows all the Application Types for a product.
I have a view dbo.View_Products_by_Application and a table dbo.tblApplications.
dbo.tblApplicaitons has two fields, ApplicationName & ApplicationID
dbo.View_Products_By_Application has all the product information. What I want to do is create a record set that uses dbo.tblApplications and returns only the ApplicationNames where that application Name also Appears in the dbo.View_Produts_by_Application view. And in the recordset returned, I only want each ApplicationName to appear once.
The two items I need in my record set are ApplicationName and ApplicationID.
SELECT *
FROM [WebV2].[dbo].[View_Products_By_Application]
INNER JOIN dbo.tblApplications
ON dbo.View_Products_By_Application.ApplicationName = dbo.tblApplications.ApplicationName
Order BY dbo.View_Products_By_Application.ApplicationName ASC
I didn't quite get what you have there but I think what you are looking for is something like this.
SELECT [WebV2].[dbo].[View_Products_By_Application].*, dbo.tblApplications.*, ROW_NUMBER() OVER (PARTITION BY dbo.View_Products_By_Application.ApplicationName Order BY dbo.View_Products_By_Application.ApplicationName ASC)
As rownum
FROM [WebV2].[dbo].[View_Products_By_Application]
INNER JOIN dbo.tblApplications ON dbo.View_Products_By_Application.ApplicationName = dbo.tblApplications.ApplicationName
Where rownum= 1
This will return to you the first by ApplicationName, I believe.
http://technet.microsoft.com/en-us/library/ms186734.aspx
You could use EXISTS:
SELECT app.ApplicationName, app.ApplicationID
FROM dbo.tblApplications app
WHERE EXISTS
(
SELECT *
FROM [WebV2].[dbo].[View_Products_By_Application] vw
WHERE vw.ApplicationName = app.ApplicationName
)
ORDER BY app.ApplicationName;
I think you can just do a select distinct to get what you want:
SELECT distinct a.ApplicationName, a.ApplicationId
FROM [WebV2].[dbo].[View_Products_By_Application] pba
INNER JOIN dbo.tblApplications a
ON pba.ApplicationName = a.ApplicationName
Order BY a.ApplicationName ASC
I also added table aliases to make your query more readable.
Related
I have 2 tables (Opportunity and Stage). I need to get each opportunity with the most recent stage by StageTypeId.
Opportunity: Id, etc
Stage: Id, CreatedOn, OpportunityId, StageTypeId.
Let's suppose I have "opportunity1" and "opportunity2" each one with many Stages added.
By passing the StageTypeId I need to get the opportunity which has this StageTypeId as most recent.
I'm trying the following query but it´s replicating the same Stage for all the Opportunities.
It seems that it's ignoring this line: "AND {Stage}.[OpportunityId] = ID"
SELECT {Opportunity}.[Id] ID,
{Opportunity}.[Name],
{Opportunity}.[PotentialAmount],
{Contact}.[FirstName],
{Contact}.[LastName],
(SELECT * FROM
(
SELECT {Stage}.[StageTypeId]
FROM {Stage}
WHERE {Stage}.[StageTypeId] = #StageTypeId
AND {Stage}.[OpportunityId] = ID
ORDER BY {Stage}.[CreatedOn] DESC
)
WHERE ROWNUM = 1) AS StageTypeId
FROM {Opportunity}
LEFT JOIN {Contact}
ON {Opportunity}.[ContactId] = {Contact}.[Id]
Thank you
Most of DBMS support fetch first clause So, you can do :
select o.*
from Opportunity o
where o.StageTypeId = (select s.StageTypeId
from Stage s
where s.OpportunityId = o.id
order by s.CreatedOn desc
fetch first 1 rows only
);
you can try below way all dbms will support
select TT*. ,o*. from
(
select s1.OpportunityId,t.StageTypeId from Stage s1 inner join
(select StageTypeId,max(CreatedOn) as createdate Stage s
group by StageTypeId
) t
on s1.StageTypeId=t.StageTypeId and s1.CreatedOn=t.createdate
) as TT inner join Opportunity o on TT.OpportunityId=o.id
I had this query, which gives me the desired results on postgres
SELECT
t.*,
ROW_NUMBER() OVER (PARTITION BY t."Internal_reference", t."Movement_date" ORDER BY t."Movement_date") AS "cnt"
FROM (SELECT
"Internal_reference",
MAX("Movement_date") AS maxtime
FROM dw."LO-D4_Movements"
GROUP BY "Internal_reference") r
INNER JOIN dw."LO-D4_Movements" t
ON t."Movement_date" = r.maxtime
AND t."Internal_reference" = r."Internal_reference"
Issue is I have to translate the query above on Access where the analytical function does not exist ...
I used this answer to build the query below
SELECT
t."Internal_reference",
t.from_code,
t.to_code,
t."Movement_date",
t.shipment_number,
t."PO_number",
t."Quantity",
t."Movement_value",
t."Site",
t."Import_date",
COUNT(*) AS "cnt"
FROM (
SELECT "Internal_reference",
MAX("Movement_date") AS maxtime
FROM dw."LO-D4_Movements"
GROUP BY "Internal_reference") r
LEFT OUTER JOIN dw."LO-D4_Movements" t
ON t."Movement_date" = r.maxtime AND t."Internal_reference" = r."Internal_reference"
GROUP BY
t.from_code,
t.to_code,
t."Movement_date",
t.shipment_number,
t."PO_number",
t."Quantity",
t."Movement_value",
t."Site",
t."Import_date",
t."Internal_reference"
ORDER BY t.from_code
Issue is I only have 1 in the cnt column.
I tried to tweak it by removing the internal_reference (see below)
SELECT
t.from_code,
t.to_code,
t."Movement_date",
t.shipment_number,
t."PO_number",
t."Quantity",
t."Movement_value",
t."Site",
t."Import_date",
COUNT(*) AS "cnt"
FROM (
SELECT "Internal_reference",
MAX("Movement_date") AS maxtime
FROM dw."LO-D4_Movements"
GROUP BY "Internal_reference") r
LEFT OUTER JOIN dw."LO-D4_Movements" t
ON t."Movement_date" = r.maxtime AND t."Internal_reference" = r."Internal_reference"
GROUP BY
t.from_code,
t.to_code,
t."Movement_date",
t.shipment_number,
t."PO_number",
t."Quantity",
t."Movement_value",
t."Site",
t."Import_date"
ORDER BY t.from_code
However, the results are even worse. The cnt is growing but it gives me the wrong cnt
Any help are more than welcome as I'm slow losing my sanity.
Thanks
Edit: Please find the sqlfiddle
I think Gordon-Linoff's code is close to what you want, but there are some typos I couldn't correct without a rewrite, so here's my attempt
SELECT
t1.Internal_reference,
t1.Movement_date,
t1.PO_Number as Combination_Of_Columns_Which_Make_This_Unique,
t1.Other_columns,
Count(1) AS Cnt
FROM
([LO-D4_Movements] AS t1
INNER JOIN [LO-D4_Movements] AS t2 ON
t1.Internal_reference = t2.Internal_reference AND
t1.Movement_date = t2.Movement_date)
INNER JOIN (
SELECT
t3.Internal_reference,
MAX(t3.Movement_date) AS Maxtime
FROM
[LO-D4_Movements] AS t3
GROUP BY
t3.Internal_reference
) AS r ON
t1.Internal_reference = r.Internal_reference AND
t1.Movement_date = r.Maxtime
WHERE
t1.PO_Number>=t2.PO_Number
GROUP BY
t1.Internal_reference,
t1.Movement_date,t1.PO_Number,
t1.Other_columns
ORDER BY
t1.Internal_reference,
t1.Movement_date,
Count(1);
In addition to within the max(movement_date) subquery, the main table is brought in twice. One version is the one for showing in your results, the other is for counting records to generate the sequence numbers.
Gordon said you need a unique id column for each row. And that's true if by "column" you mean to include derived columns also. Also it only needs to be unique within any combination of "internal_reference" and "Movement_date".
I've assumed, perhaps wrongly, that PO_Number will suffice. If not, concatenate with that (and some delimeters) other fields which will make it unique. The where clause will need updating to compare t1 and t2 for the "Combination of Columns which make this unique".
If, there is no appropriate combination available, I'm not sure it can be done without VBA and/or temp tables as The-Gambill suggested.
This is a real pain in MS Access, as far as I know. One method is a correlated subquery, but you need a unique id column on each row:
SELECT t.*,
(SELECT COUNT(*)
FROM (SELECT "Internal_reference", MAX("Movement_date") AS maxtime
FROM dw."LO-D4_Movements"
GROUP BY "Internal_reference"
) as t2
WHERE t2."Internal_reference" AND t."Internal_reference" AND
t2."Movement_date" = t."Movement_date" AND
t2.?? <= t.??
) as cnt
FROM (SELECT "Internal_reference", MAX("Movement_date") AS maxtime
FROM dw."LO-D4_Movements"
GROUP BY "Internal_reference"
) r INNER JOIN
dw."LO-D4_Movements" t
ON t."Movement_date" = r.maxtime AND
t."Internal_reference" = r."Internal_reference";
The ?? is for the id or creation date or something to allow the counting of rows.
Im trying to only select the most recent calldatetime and display that in my results, can anyone help? I need the results to only show the latest updated record
SELECT
ROW_NUMBER() OVER (PARTITION BY l.phonenum ORDER BY h.calldatetime) as rn,
h.HistoryID,
l.ProjectID,
h.ProjName,
l.CompanyName,
l.Phonenum,
l.fname,
l.lname,
l.Address1,
l.Address2,
l.Address3,
l.Town,
l.Postcode,
l.county,
h.CallDateTime,
cb.CBDatetime,
l.apptdate,
l.appttime,
h.CRC,
c.Description,
a.Firstname + ' ' + a.Lastname AS AgentName,
l.Notes
FROM
History h inner join
cmp_UtilityTrade l on h.PhoneNum = l.Phonenum left outer join
CRC c on c.CRC = h.CRC left outer join
Agent a on a.AgentID = h.AgentID left outer join
CallBack cb on cb.DialID = h.DialID
WHERE
h.calldatetime BETWEEN '2016-05-01 00:00:00' AND '2016-06-15 23:00:00'
ORDER BY
l.Phonenum
It looks like you already have the row_number() over window function setup the way you need it. Assuming it's returning the correct value, you simply need to filter your results by that rn value. Just place your existing query in a CTE, and filter the results like so:
with cte as (<your_query_without_order_by_phonenum>)
select *
from cte
where rn = 1
order by phonenum
Also note that you probably want to move the order by l.Phonenum clause outside the CTE, and place it in the outer query.
EDIT
As noted in the comments, you may also have to fix the order by clause inside the row_number() window function to h.calldatetime DESC.
I am getting the following error when I am trying to execute my SQL SELECT statement
Could not execute statement.
Correllation name 'contact' not found
SQLCODE=-142, ODBC 3 State"42S02"
Line 1, Column 1
My code is as follows
Select forename, surname, email, quotedate
From ( SELECT *, ROW_NUMBER() OVER (PARTITION BY tblQuote.contno ORDER BY quoteno DESC) AS rn
FROM dba.quotehdr as tblQuote left join dba.contact as tblContact on tblQuote.contno = tblContact.contno)q
where rn = 1 and quotedate <=today()-720 and emailbounced = 0 and email is not null and dba.contact.statusflag = 'A'
order by quotedate desc
This error only happended when I added in
dba.contact.statusflag = 'A'
I have tried this as
tblContact.statusflag = 'A'
and I get the same error!
Any suggestions?
(What about q.statusflag = 'A' , as it seems you are using q as an Alias.) This original answer is not correct, amended to:
#Shannon Severance is correct in his comment. You are trying to use the Where clause on the outer query - which does not contain any fields from the contact table. Let me tidy your query to help you see your subquery (q) - as:
Select
forename
,surname
,email
, quotedate
From
(
SELECT
*
, ROW_NUMBER() OVER (PARTITION BY tblQuote.contno ORDER BY quoteno DESC) AS rn
FROM dba.quotehdr as tblQuote
left join dba.contact as tblContact on tblQuote.contno = tblContact.contno
) q
left join dba.contact as tblContact on q.contno = tblContact.contno
where rn = 1
and quotedate <=today()-720
and emailbounced = 0
and email is not null
and tblContact.statusflag = 'A' -- Now sourced from last left join
order by quotedate desc
You will need another LEFT JOIN on the dba.contact table to be able to access this field (ADDED NOW as an example).
Also, depending on your database engine - if your field is duplicated in both tables, the SELECT * in a subquery may eject those fields, or rename them, or throw an error. Run your inner subquery by itself and see what it produces, or use explicit field name instead of *
(I still really think your * in the subquery is causing the error and also the confusion. Remove it and replace with table.field names - this will help you understand what is going wrong ...Otherwise your query logic is pretty fine, and adding the extra left join that I suggest is overkill)
I have a table that represents an Object. It has many columns but also fields that require language support.
For simplicity let's say I have 3 tables:
MainObjectTable
LanguageDependantField1
LanguageDependantField2.
MainObjectTable has a PK int called ID, and both LanguageDependantTables have a foreign key link back to the MainObjectTable along with a language code and the date they were added.
I've created a stored procedure that accepts the MainObjectTable ID and a Language. It will return a single row containing the most recent items from the language tables. The select statement looks like
SELECT
MainObjectTable.VariousColumns,
LanguageDependantField1.Description,
LanguageDependantField2.SomeOtherText
FROM
MainObjectTable
OUTER APPLY
(SELECT TOP 1 LanguageDependantField1.Description
FROM LanguageDependantField1
WHERE LanguageDependantField1.MainObjectTable_ID = MainObjectTable.ID
AND LanguageDependantField1.Language_ID = #language
ORDER BY
LanguageDependantField1.[Default], LanguageDependantField1.CreatedDate DESC) LanguageDependantField1
OUTER APPLY
(SELECT TOP 1 LanguageDependantField2.SomeOtherText
FROM LanguageDependantField2
WHERE LanguageDependantField2.MainObjectTable_ID = MainObjectTable.ID
AND LanguageDependantField2.Language_ID = #language
ORDER BY
LanguageDependantField2.[Default] DESC, LanguageDependantField2.CreatedDate DESC) LanguageDependantField2
WHERE
MainObjectTable.ID = #MainObjectTableID
What I want to add is the ability to fallback to a default language if a row isn't found in the specified language. Let's say we use "German" as the selected language. Is it possible to return an English row from LanguageDependantField1 if the German does not exist presuming we have #fallbackLanguageID
Also am I right to use OUTER APPLY in this scenario or should I be using JOIN?
Many thanks for your help.
Try this:
SELECT MainObjectTable.VariousColumns,
COALESCE(PrefLang.Description,Fallback.Description,'Not Found Desc')
as Description,
COALESCE(PrefLang.SomeOtherText,FallBack.SomeOtherText,'Not found')
as SomeOtherText
FROM MainObjectTable
LEFT JOIN
(SELECT TOP 1 pl.Description,pl.SomeOtherText
FROM LanguageDependantField1 pl
WHERE pl.MainObjectTable_ID = MainObjectTable.ID
AND pl.Language_ID = #language
ORDER BY
pl.[Default], pl.CreatedDate DESC)
PrefLang ON 1=1
LEFT JOIN
(SELECT TOP 1 fb.Description,fb.SomeOtherText
FROM LanguageDependantField1 fb
WHERE fb.MainObjectTable_ID = MainObjectTable.ID
AND fb.Language_ID = #fallbackLanguageID
ORDER BY
fb.[Default], fb.CreatedDate DESC)
Fallback ON 1=1
WHERE
MainObjectTable.ID = #MainObjectTableID
Basically, make two queries, one to the preferred language and one to English (Default). Use the LEFT JOIN, so if the first one isn't found, the second query is used...
I don't have your actual tables, so there might be a syntax error in above, but hope it gives you the concept you want to try...
Yes, the use of Outer Apply is correct if you want to correlate the MainObjectTable table rows to the inner queries. You cannot use Joins with references in the derived table to the outer table. If you wanted to use Joins, you would need to include the joining column(s) and in this case pre-filter the results. Here is what that might look like:
With RankedLanguages As
(
Select LDF1.MainObjectTable_ID, LDF1.Language_ID, LDF1.Description, LDF1.SomeOtherText, ...
, Row_Number() Over ( Partition By LDF1.MainObjectTable_ID, LDF1.Language_ID
Order By LDF1.[Default] Desc, LDF1.CreatedDate Desc ) As Rnk
From LanguageDependantField1 As LDF1
Where LDF1.Language_ID In( #languageId, #defaultLanguageId )
)
Select M.VariousColumns
, Coalesce( SpecificLDF.Description, DefaultLDF.Description ) As Description
, Coalesce( SpecificLDF.SomeOtherText, DefaultLDF.SomeOtherText ) As SomeOtherText
, ...
From MainObjectTable As M
Left Join RankedLanguages As SpecificLDF
On SpecificLDF.MainObjectTable_ID = M.ID
And SpecifcLDF.Language_ID = #languageId
And SpecifcLDF.Rnk = 1
Left Join RankedLanguages As DefaultLDF
On DefaultLDF.MainObjectTable_ID = M.ID
And DefaultLDF.Language_ID = #defaultLanguageId
And DefaultLDF.Rnk = 1
Where M.ID = #MainObjectTableID