Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

Solved

Multiple Max Dates Needed for SQL Join Query

Posted on 2013-01-18

Microsoft SQL Server

1 solution

Medium Priority

175 Views

Last Modified: 2013-02-04

I have a main table DataEntryView that I need joined with other tables that contain the same JobID but have multiple records per JobID, I only want the Max(ActualStartDate) joined to the main DataEntryView. I thought I got it but my view comes up with 'Unsupported Data Type' when I run this query.

SELECT     TOP (100) PERCENT dbo.DataEntryView.ctJobID, dbo.DataEntryView.JobNum, dbo.DataEntryView.Part, dbo.DataEntryView.Contractor, 
                      dbo.DataEntryView.Owner, dbo.DataEntryView.Sales_Initial, dbo.DataEntryView.Sales_Amount, dbo.DataEntryView.DesEng_SalesPerHour, 
                      dbo.DataEntryView.loggedin, dbo.DataEntryView.Customer_Expected_Delivery, Bid_LF_Table.Bid_LF
FROM         dbo.DataEntryView LEFT OUTER JOIN
                          (SELECT     TOP (1) Actual_Start_Date AS Bid_LF, JobID
                            FROM          dbo.DesEngSchedule AS DesEngSchedule_1
                            WHERE      (Department LIKE 'Custom Design Engineering') AND (TaskName LIKE '02%')
                            ORDER BY Bid_LF) AS Bid_LF_Table ON dbo.DataEntryView.ctJobID = Bid_LF_Table.JobID
WHERE     (dbo.DataEntryView.loggedin IS NOT NULL) AND (dbo.DataEntryView.Finalized_Sales >= GETDATE() - 7 OR
                      dbo.DataEntryView.Finalized_Sales IS NULL) AND (dbo.DataEntryView.bidresultdate IS NULL) AND (dbo.DataEntryView.Lost_Sales_Date IS NULL) AND 
                      (dbo.DataEntryView.Sales_Initial NOT LIKE 'PD') AND (dbo.DataEntryView.Sales_Initial NOT LIKE 'CS')

Open in new window

Comment

Question by:Bianca

[X]

Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

Help others & share knowledge
Earn cash & points
Learn & ask questions

Join The Community

2 Comments

LVL 41

Accepted Solution

by:ralmada

ralmada earned 2000 total points

ID: 387936212013-01-18

try this way:

SELECT dbo.DataEntryView.ctJobID,
      dbo.DataEntryView.JobNum,
      dbo.DataEntryView.Part,
      dbo.DataEntryView.Contractor,
      dbo.DataEntryView.Owner,
      dbo.DataEntryView.Sales_Initial,
      dbo.DataEntryView.Sales_Amount,
      dbo.DataEntryView.DesEng_SalesPerHour,
      dbo.DataEntryView.loggedin,
      dbo.DataEntryView.Customer_Expected_Delivery,
      Bid_LF_Table.Bid_LF
FROM dbo.DataEntryView
LEFT OUTER JOIN (
      SELECT Max(Actual_Start_Date) AS Bid_LF, JobID
      FROM dbo.DesEngSchedule AS DesEngSchedule_1
WHERE Department LIKE 'Custom Design Engineering%' AND TaskName LIKE '02%'
      group by JobID
) AS Bid_LF_Table ON dbo.DataEntryView.ctJobID = Bid_LF_Table.JobID

WHERE (dbo.DataEntryView.loggedin IS NOT NULL) AND
      (dbo.DataEntryView.Finalized_Sales >= GETDATE() - 7 OR dbo.DataEntryView.Finalized_Sales IS NULL) AND
      (dbo.DataEntryView.bidresultdate IS NULL) AND
      (dbo.DataEntryView.Lost_Sales_Date IS NULL) AND
(dbo.DataEntryView.Sales_Initial not in ('PD', 'CS'))

LVL 27

Expert Comment

by:Zberteoc

ID: 387939752013-01-18

You join your table using the jobID and startdate column with a subquery made from DataEntryView view getting the max actualstartdate per JobID:

select 
	tbl.*
from
	YourTable tbl
	inner join 
	(
		Select 
			JobID, 
			max(ActualStartDate) as ActualStartDate 
		from 
			DataEntryView dev
		group by
			JobID
	) maxdates
	ON 
		maxdates.JobID=tbl.JobID
		AND maxdates.ActualStartDate=tbl.StartDate

Open in new window

Featured Post

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Detect locking/blocking in SQL and send email alerts

Article by: lcohan

Ever wondered why sometimes your SQL Server is slow or unresponsive with connections spiking up but by the time you go in, all is well? The following article will show you how to install and configure a SQL job that will send you email alerts includ…

Microsoft SQL Server

Export Table Data in SQL Server Management Studio

Article by: Dirk

It is possible to export the data of a SQL Table in SSMS and generate INSERT statements. It's neatly tucked away in the generate scripts option of a database.

Executing a SQL Server Function from Within Access

Video by: TechMommy

Familiarize people with the process of utilizing SQL Server functions from within Microsoft Access. Microsoft Access is a very powerful client/server development tool. One of the SQL Server objects that you can interact with from within Microsoft Ac…