<a href="http://g.adspeed.net/ad.php?do=clk&zid=15220&wd=468&ht=60&pair=as" target="_blank"><img style="border:0px;" src="http://g.adspeed.net/ad.php?do=img&zid=15220&wd=468&ht=60&pair=as" alt="i" width="468" height="60"/></a>
Log in
::
Register
::
Not logged in
Home
Tags
Articles
Editorials
Stairways
Forums
Scripts
Videos
Blogs
QotD
Books
Ask SSC
SQL Jobs
Training
Authors
About us
Contact us
Newsletters
Write for us
<a href="http://g.adspeed.net/ad.php?do=clk&zid=15491&wd=120&ht=300&pair=as" target="_top"><img style="border:0px;" src="http://g.adspeed.net/ad.php?do=img&zid=15491&wd=120&ht=300&pair=as" alt="i" width="120" height="300"/></a>
Recent Posts
Recent Posts
Popular Topics
Popular Topics
Home
Search
Members
Calendar
Who's On
Home
»
Article Discussions
»
Article Discussions by Author
»
Discuss Content Posted by Patrick LeBlanc
»
SELECT and WHERE without FROM
29 posts, Page 1 of 3
1
2
3
»
»»
SELECT and WHERE without FROM
Rate Topic
Display Mode
Topic Options
Author
Message
Patrick_LeBlanc
Patrick_LeBlanc
Posted Wednesday, June 22, 2011 8:22 PM
SSC Veteran
Group: General Forum Members
Last Login: Wednesday, March 27, 2013 9:22 AM
Points: 226,
Visits: 278
Comments posted to this topic are about the item
SELECT and WHERE without FROM
Post #1130099
bitbucket-25253
bitbucket-25253
Posted Wednesday, June 22, 2011 8:23 PM
SSCertifiable
Group: General Forum Members
Last Login: Today @ 6:46 AM
Points: 5,102,
Visits: 20,207
Nice question on fundamentals .. thanks
If everything seems to be going well, you have obviously overlooked something.
Ron
Please help us, help you -before posting a question please
read
Before posting a performance problem please
read
Post #1130100
mohammed moinudheen
mohammed moinudheen
Posted Wednesday, June 22, 2011 10:41 PM
SSCrazy
Group: General Forum Members
Last Login: Thursday, May 16, 2013 3:34 PM
Points: 2,170,
Visits: 3,582
Good question. I got to know something.
Mohammed Moinudheen
Post #1130122
sayyad.azhar
sayyad.azhar
Posted Thursday, June 23, 2011 12:51 AM
Forum Newbie
Group: General Forum Members
Last Login: Monday, July 25, 2011 1:03 AM
Points: 3,
Visits: 4
Very Good basic question !
Post #1130169
paul.knibbs
paul.knibbs
Posted Thursday, June 23, 2011 1:06 AM
Ten Centuries
Group: General Forum Members
Last Login: Today @ 6:28 AM
Points: 1,258,
Visits: 4,259
I looked at the question, thought, "Surely this is obvious"--went and ran it in SSMS just to be sure I wasn't missing something. It was only when I came here I realised it was talking about the missing FROM clause!
Post #1130181
Carlo Romagnano
Carlo Romagnano
Posted Thursday, June 23, 2011 1:27 AM
SSCommitted
Group: General Forum Members
Last Login: Yesterday @ 1:51 AM
Points: 1,972,
Visits: 1,821
If the condition of the WHERE clause validates to true then the result set is returned. If it does not, the result set is empty.
This is true only if you do not use COUNT(*):
select count(*) cnt
where 1 =0
One row is returned despite the WHERE condition is false.
Post #1130192
Geoff Langdon
Geoff Langdon
Posted Thursday, June 23, 2011 1:59 AM
SSC Veteran
Group: General Forum Members
Last Login: 2 days ago @ 5:38 AM
Points: 285,
Visits: 102
Interestingly, this gives ORA-00923 error - FROM keyword not found where expected in Oracle.
(Hence I got it wrong!)
Post #1130205
paul s-306273
paul s-306273
Posted Thursday, June 23, 2011 2:04 AM
Ten Centuries
Group: General Forum Members
Last Login: Friday, May 17, 2013 4:24 AM
Points: 1,161,
Visits: 642
Geoff Langdon (6/23/2011)
Interestingly, this gives ORA-00923 error - FROM keyword not found where expected in Oracle.
(Hence I got it wrong!)
Geoff how about:
1 select '123' as col1
2 from dual
3* where 1 =1
orhousin@BUSO> /
COL
---
123
I was expecting this question to have almost 100% correct answers...
Post #1130207
Stewart "Arturius" Campbell
Stewart "Arturius" Campbell
Posted Thursday, June 23, 2011 2:28 AM
Hall of Fame
Group: General Forum Members
Last Login: Today @ 8:31 AM
Points: 3,129,
Visits: 4,312
Having worked with MSSQL, Oracle, Db2, Sybase and Informix databases, the only ones this command will work on is MSSQL and Sybase.
All the others require a FROM clause with a SELECT
____________________________________________
Space, the final frontier? not any more...
All limits henceforth are self-imposed.
“libera tute vulgaris ex”
Post #1130215
Hardy21
Hardy21
Posted Thursday, June 23, 2011 2:58 AM
SSC Eights!
Group: General Forum Members
Last Login: Yesterday @ 7:11 AM
Points: 877,
Visits: 1,159
Nice question
Thanks
Post #1130230
« Prev Topic
|
Next Topic »
29 posts, Page 1 of 3
1
2
3
»
»»
Permissions
You
cannot
post new topics.
You
cannot
post topic replies.
You
cannot
post new polls.
You
cannot
post replies to polls.
You
cannot
edit your own topics.
You
cannot
delete your own topics.
You
cannot
edit other topics.
You
cannot
delete other topics.
You
cannot
edit your own posts.
You
cannot
edit other posts.
You
cannot
delete your own posts.
You
cannot
delete other posts.
You
cannot
post events.
You
cannot
edit your own events.
You
cannot
edit other events.
You
cannot
delete your own events.
You
cannot
delete other events.
You
cannot
send private messages.
You
cannot
send emails.
You
may
read topics.
You
cannot
rate topics.
You
cannot
vote within polls.
You
cannot
upload attachments.
You
may
download attachments.
You
cannot
post HTML code.
You
cannot
edit HTML code.
You
cannot
post IFCode.
You
cannot
post JavaScript.
You
cannot
post EmotIcons.
You
cannot
post or upload images.
Copyright © 2002-2013 Simple Talk Publishing. All Rights Reserved.
Privacy Policy.
Terms of Use.
Report Abuse.
