Solved

SQL query assistance requested

Posted on 2014-09-03
15
118 Views
Last Modified: 2014-09-04
I have a table with the following fields:

ID (pk auto-generated)
PLACE_CODE
PLACE
TRAVELDATE
CITY
TRAVELTIME
QUALIFY

I am trying to create a query fo an MS Access DB that:
1) displays all fields,
2) only displays where CITY = 'Seattle'
3) sets TRAVELTIME = (TRAVELTIME/2) if QUALIFY = "YES"
4) GROUPS BY PLACECODE, PLACE, TRAVELDATE
5) only unique PLACECODE-PLACE-TRAVELDATE are displayed
0
Comment
Question by:Cam Raben
  • 7
  • 4
  • 3
  • +1
15 Comments
 
LVL 47

Assisted Solution

by:Vitor Montalvão
Vitor Montalvão earned 275 total points
ID: 40301174
SELECT ID, PLACECODE, PLACE, TRAVELDATE, CITY,  iif(QUALIFY = "YES", (TRAVELTIME/2) , TRAVELTIME),  QUALIFY
FROM YourTableName
WHERE CITY = 'Seattle'
ORDER BY PLACECODE, PLACE, TRAVELDATE 

Open in new window

0
 

Author Comment

by:Cam Raben
ID: 40301316
So how does this handle a TRAVELDATE with a time stamp on it?  For example, what if there were 2 TRAVELDATES = 01/22/2014, but with different time stamps?   I assume both would be displayed.  I really just want only one of those to appear, and it can be an average of the two.
0
 
LVL 47

Expert Comment

by:Vitor Montalvão
ID: 40301355
Ok. But then ID shouldn't be returned.
I don't know if this going to work because I don't have Access here:
SELECT PLACECODE, PLACE, TRAVELDATE, CITY,  iif(QUALIFY = "YES", (TRAVELTIME/2) , TRAVELTIME),  QUALIFY
FROM YourTableName
WHERE CITY = 'Seattle'
GROUP BY PLACECODE, PLACE, TRAVELDATE 
ORDER BY PLACECODE, PLACE, TRAVELDATE 

Open in new window

0
PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

 

Author Comment

by:Cam Raben
ID: 40301409
It does not let me select all my fields, using the group by.  I was thinking here may be a special way to use the TRAVELDATE so that the timestamp is not in play.   ?
0
 

Author Comment

by:Cam Raben
ID: 40301609
Any way to define TRAVELDATE as MM/DD/YYYY only, without the timestamp?
0
 

Author Comment

by:Cam Raben
ID: 40301656
I keep working with this but it keeps giving me duplicate rows.  I need only unique PLACECODE-PLACE-TRAVELDATE to be displayed.   ?
0
 
LVL 32

Expert Comment

by:awking00
ID: 40301823
Can you post some sample data (just enough to demonstrate the issue) and what you expect as output?
0
 

Author Comment

by:Cam Raben
ID: 40301903
The DB is way too large to send.  The issue is that the suggested code shown below does not return unique instances of [PLACECODE, PLACE, TRAVELDATE].  In other words, the query returns more than one row with [PLACECODE = 125, PLACE = "California", and TRAVELDATE = 01/22/2014], when it should return that combination only once.

SELECT ID, PLACECODE, PLACE, TRAVELDATE, CITY,  iif(QUALIFY = "YES", (TRAVELTIME/2) , TRAVELTIME),  QUALIFY
FROM YourTableName
WHERE CITY = 'Seattle'
ORDER BY PLACECODE, PLACE, TRAVELDATE
0
 
LVL 32

Expert Comment

by:awking00
ID: 40301920
No need to send entire DB. What are the results of the following query?
select top 25 id, placecode, place, traveldate, city, traveltime, qualify
from yourtable
where city = 'Seattle'
and placecode = 125
and place = 'Califormia'
and traveldate = 01/22/2014
0
 
LVL 47

Expert Comment

by:Vitor Montalvão
ID: 40302821
You can use the format function to return only date without time.
SELECT DISTINCT PLACECODE, PLACE, format(TRAVELDATE, "mm/dd/yyyy"), CITY,  iif(QUALIFY = "YES", (TRAVELTIME/2) , TRAVELTIME),  QUALIFY
FROM YourTableName
WHERE CITY = 'Seattle'
ORDER BY PLACECODE, PLACE, TRAVELDATE 

Open in new window

0
 
LVL 12

Assisted Solution

by:Ammar Gaffar
Ammar Gaffar earned 50 total points
ID: 40303197
I don't know which database engine you are using, but if you are using SQL Server then the bellow code must return only date part

SELECT CONVERT(VARCHAR(10), TRAVELDATE, 111) FROM TABLENAME

Open in new window


If you are using MS Access, Vitor Montalvão's solution should work, if not the write the format in caps letter

SELECT Format([TRAVELDATE],"DD/MM/YYYY") FROM TABLENAME

Open in new window


Good Luck
0
 
LVL 47

Expert Comment

by:Vitor Montalvão
ID: 40303210
Even this is also in SQL Server topic it's in the question:
I am trying to create a query fo an MS Access DB that:
0
 

Author Comment

by:Cam Raben
ID: 40304085
Vitor - An error message say that the ORDER BY clause conflicts with the DISTINCT command.   ??
0
 
LVL 32

Accepted Solution

by:
awking00 earned 175 total points
ID: 40304287
I suspect that you need to order by PLACECODE, PLACE, format(TRAVELDATE, "mm/dd/yyyy")
0
 

Author Closing Comment

by:Cam Raben
ID: 40304510
Thanks all!
0

Featured Post

Efficient way to get backups off site to Azure

This user guide provides instructions on how to deploy and configure both a StoneFly Scale Out NAS Enterprise Cloud Drive virtual machine and Veeam Cloud Connect in the Microsoft Azure Cloud.

Question has a verified solution.

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

This article shows gives you an overview on SQL Server 2016 row level security. You will also get to know the usages of row-level-security and how it works
Preparing an email is something we should all take special care with – especially when the email is for somebody you may not know very well. The pressures of everyday working life stacked with a hectic office environment can make this a real challen…
In Microsoft Access, learn the trick to repeating sub-report headings at the top of each page. The problem with sub-reports and headings: Add a dummy group to the sub report using the expression =1: Set the “Repeat Section” property of the dummy…
Viewers will learn how to use the UPDATE and DELETE statements to change or remove existing data from their tables. Make a table: Update a specific column given a specific row using the UPDATE statement: Remove a set of values using the DELETE s…

776 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question