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Because in the former you didn't list CTE X in final SELECT's FROM clause.

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-----Original Message-----
Subject: IFSDIR with CTE

I was trying out the IFSDIR User-Defined Table Function developed by
Michael Sansoterra
(http://www.systeminetwork.com/artarchive/17851/index.html) and Scott
Klement
(http://www.systeminetwork.com/artarchive/newsletter/w/1001/n/5012/i/6552/a/
54760/A_UDTF_For_IFS_Directories.html)

and it works great (thanks Scott & Michael!) for a single directory.

[It would be really nice if it recursed sub directories, so you could
use it to get the total size of a directory and all its subdirectories]

I figured it would be interesting to use it to show all the files in all
the 1st-level subdirectories of a given directory, e.g.

with x as
(select * from table(IFSDIR('/home')) as y
where y.TYPE = '*DIR')
select * from table(IFSDIR(x.filename)) as z

but I got this error:

*Column qualifier or table X undefined.*

So I tried

with x as
(select * from table(IFSDIR('/home')) as y
where y.TYPE = '*DIR')
select * from x

and it worked fine.

Anyone have any idea why the former didn't work?

*Peter Dow*




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