* Bug: babel sql: no results are returned if the first would be NULL [7.5]
@ 2011-04-05 20:03 Myles English
0 siblings, 0 replies; only message in thread
From: Myles English @ 2011-04-05 20:03 UTC (permalink / raw)
To: emacs-orgmode
Hello,
When returning results from a postgresql database, if the first value is
NULL then no results are returned.
Versions: orgmode git commit c01c2ad Fri Mar 18, postgresql 9.0.3.
This works as expected:
#+begin_src sql :engine postgresql :cmdline -d postgres
SELECT 1 as A, NULL as B;
#+end_src
#+results:
| a | b |
| 1 | |
#+begin_src sql :engine postgresql :cmdline -d postgres
SELECT 1 as A, 1 as B;
#+end_src
#+results:
| a | b |
| 1 | 1 |
When the first value is NULL then only the column names are returned:
#+begin_src sql :engine postgresql :cmdline -d postgres
SELECT NULL as A,1 as B;
#+end_src
#+results:
| a | b |
|---+---|
whereas I would have expected this:
#+begin_example
| a | b |
| | 1 |
#+end_example
A slightly unsatisfactory workaround using coalesce, is:
#+begin_src sql :engine postgresql :cmdline -d postgres
SELECT coalesce(NULL,'NULL') as A,1 as B;
#+end_src
#+results:
| a | b |
| NULL | 1 |
Also, this may be unrelated, when trying to return tuples only, using
"-t", this happens:
#+begin_src sql :engine postgresql :cmdline -d postgres -t
SELECT NULL as A,1 as B;
#+end_src
#+results:
| | | | | |
|---+---+---+---+---|
| | | | | |
Thanks,
Myles
Emacs : GNU Emacs 23.3.1 (x86_64-unknown-linux-gnu, GTK+ Version
2.22.1) of 2011-03-10 on bitzer.hoetzel.info
Package: Org-mode version 7.5
current state:
==============
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2011-04-05 20:03 Bug: babel sql: no results are returned if the first would be NULL [7.5] Myles English
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