Solved

SQL Select

Posted on 2013-05-20
4
419 Views
Last Modified: 2013-05-21
I need to put two selectes together

1. Select @totalNurses as totalNurses

2. Select state, count(state) as cnt from nurses where state = ISNULL(@state,state)

So...

If @totalNurses  = 1000
and @state = 'KY'
Data would look like this

ttl     state    cnt
1000  KY       25

But if @state is null
ttl     state    cnt
1000  AK        5
1000  AL         9
1000  AR        17
etc...
0
Comment
Question by:lrbrister
[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
  • 2
4 Comments
 
LVL 66

Expert Comment

by:Jim Horn
ID: 39181874
SELECT state, count(state) as cnt
FROM NURSES
WHERE (state = @state OR @state IS NULL)
GROUP BY state
ORDER BY state
0
 
LVL 66

Expert Comment

by:Jim Horn
ID: 39181890
>1. Select @totalNurses as totalNurses
I didn't see that anywhere in your SQL, so you'll have to spell out if this is anything other than a hard-coded value in your return recordset.
0
 
LVL 49

Accepted Solution

by:
PortletPaul earned 500 total points
ID: 39183288
mmmmm

does the nurses table indicate if a nurse is no longer practicing?
i.e. could your counts be misleading because you are not considering other fields of information

anyway, perhaps the 'first query' for total nurses could be handled like this:

SELECT
  (select count(*) from nurses) as ttl
, state
, count(state) as cnt
FROM NURSES
WHERE (state = @state OR @state IS NULL)
GROUP BY state
ORDER BY state

here: if parameter @state is null, then "cnt" and "ttl" would be the same value
0
 

Author Closing Comment

by:lrbrister
ID: 39185546
Thanks
0

Featured Post

Ransomware-A Revenue Bonanza for Service Providers

Ransomware – malware that gets on your customers’ computers, encrypts their data, and extorts a hefty ransom for the decryption keys – is a surging new threat.  The purpose of this eBook is to educate the reader about ransomware attacks.

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
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.
Via a live example, show how to setup several different housekeeping processes for a SQL Server.
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…

627 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