Take a look at this code, will the select return anything or not? Look at the subquery and notice that there is no FROM there.
USE
tempdb
GO
CREATE
TABLE TestQuery (TestID int)
GO
SELECT
* FROM information_schema.columns
WHERE
column_name =( SELECT column_name
WHERE column_name = 'TestID')
Comment Notification
If you would like to receive an email when updates are made to this post, please register here
Subscribe to this post's comments using
About Denis Gobo
I was born in Croatia in 1970, when I was one I moved to Amsterdam (and yes Ajax is THE team in Holland) and finally in 1993 I came to the US. I have lived in New York City for a bunch of years and currently live in Princeton, New Jersey with my wife and 3 kids. I work for Dow Jones as a Database architect in the indexes department, one drawback: since our data goes back all the way to May 1896 I cannot use smalldates ;-( I have been working with SQL server since version 6.5 and compared to all the other bloggers here I am a n00b. Some of you might know me from http://sqlservercode.blogspot.com/ or even from some of the newsgroups where I go by the name Denis the SQL Menace If you are a Tek-Tips user then you might know me by the name SQLDenis, I am one of the guys answering SQL Questions in the SQL Programming forum.