Solved

Group By Min, SQL Query

Posted on 2013-11-25
5
611 Views
Last Modified: 2013-11-25
I have a query that is showing multiple results.  I would like to see the minimum sequence number. .  .

SELECT     WORKORDER_BASE_ID, WORKORDER_LOT_ID, WORKORDER_SPLIT_ID, MIN(SEQUENCE_NO)
FROM         OPERATION
GROUP BY WORKORDER_TYPE, WORKORDER_BASE_ID, WORKORDER_LOT_ID, WORKORDER_SPLIT_ID, STATUS, SEQUENCE_NO
HAVING      (WORKORDER_TYPE = 'W') AND (STATUS = 'R')
ORDER BY WORKORDER_BASE_ID

This is my table

WORKORDER_BASE_ID, WORKORDER_LOT_ID, WORKORDER_SPLIT_ID, SEQUENCE_NO
100, 1, 1, 10, C
100, 1, 1, 20, R
100, 1, 1, 30, R
100, 1, 1, 40, R

I would like to see this, please. . .but I'm missing something

WORKORDER_BASE_ID, WORKORDER_LOT_ID, WORKORDER_SPLIT_ID, SEQUENCE_NO
100, 1, 1, 20, R

My query results are this. . .
WORKORDER_BASE_ID, WORKORDER_LOT_ID, WORKORDER_SPLIT_ID, SEQUENCE_NO
100, 1, 1, 20, R
100, 1, 1, 30, R
100, 1, 1, 40, R

TIA!
0
Comment
Question by:CadenceAerospaceIT
  • 3
5 Comments
 
LVL 65

Expert Comment

by:Jim Horn
ID: 39675983
>HAVING      (WORKORDER_TYPE = 'W') AND (STATUS = 'R')
For starters, HAVING is essentially a WHERE clause on an aggregate such as SUM, COUNT, MIN, etc., so what you have here should be in a WHERE clause.

SQL Server GROUP BY Solutions has a couple of demos that would be a good read.
0
 
LVL 65

Accepted Solution

by:
Jim Horn earned 300 total points
ID: 39675990
>SELECT     WORKORDER_BASE_ID, WORKORDER_LOT_ID, WORKORDER_SPLIT_ID,
MIN(SEQUENCE_NO)

>GROUP BY WORKORDER_TYPE, WORKORDER_BASE_ID, WORKORDER_LOT_ID, WORKORDER_SPLIT_ID, STATUS, SEQUENCE_NO

Also, the GROUP BY clause should contain all columns in the SELECT that aren't part of an aggregate, such as BASE, LOT, and SPLIT, so what's the deal-i-o with having TYPE and STATUS columns in the GROUP BY clause?
0
 
LVL 11

Assisted Solution

by:Simone B
Simone B earned 200 total points
ID: 39675999
You are also grouping by SEQUENCE_NO, although that is in your MIN aggregate. You need to remove SEQUENCE_NO from the GROUP BY. As Jim says, GROUP BY should contain the columns in the SELECT  that aren't part of an aggregate.
0
 

Author Comment

by:CadenceAerospaceIT
ID: 39676634
jimhorn . .

Where throws back a SQL error . .

>HAVING      (WORKORDER_TYPE = 'W') AND (STATUS = 'R')
For starters, HAVING is essentially a WHERE clause on an aggregate such as SUM, COUNT, MIN, etc., so what you have here should be in a WHERE clause.

SELECT     WORKORDER_BASE_ID, WORKORDER_LOT_ID, WORKORDER_SPLIT_ID, MIN(SEQUENCE_NO)
FROM         OPERATION
GROUP BY WORKORDER_TYPE, WORKORDER_BASE_ID, WORKORDER_LOT_ID, WORKORDER_SPLIT_ID, STATUS, SEQUENCE_NO
WHERE      WORKORDER_TYPE = 'W' AND STATUS = 'R'
ORDER BY WORKORDER_BASE_ID
0
 
LVL 65

Expert Comment

by:Jim Horn
ID: 39676657
SWEATY - FEET - WILL - GIVE - HORRIBLE - ODORS

SELECT - FROM - WHERE - GROUP BY - HAVING - ORDER BY

Looking at your query, the WHERE needs to be before the GROUP BY.

Good luck getting that out of your head.
0

Featured Post

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.

Question has a verified solution.

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

Suggested Solutions

International Data Corporation (IDC) prognosticates that before the current the year gets over disbursing on IT framework products to be sent in cloud environs will be $37.1B.
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…
Using examples as well as descriptions, and references to Books Online, show the documentation available for datatypes, explain the available data types and show how data can be passed into and out of variables.
Viewers will learn how to use the SELECT statement in SQL and will be exposed to the many uses the SELECT statement has.

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