* [babel] (Almost) Add SQL*Plus engine
@ 2011-11-22 14:31 Sebastien Vauban
0 siblings, 0 replies; only message in thread
From: Sebastien Vauban @ 2011-11-22 14:31 UTC (permalink / raw)
To: emacs-orgmode-mXXj517/zsQ
Hi Eric,
I almost added the engine `sqlplus' (from Oracle Instant client) to `ob-sql':
#+begin_src emacs-lisp
('sqlplus (format "sqlplus -S %s @%s > %s"
(or cmdline "")
(org-babel-process-file-name in-file)
(org-babel-process-file-name out-file)))
#+end_src
where:
- `S' is to remove the Oracle banner
- `user/pass@server' is the logon info (given as `cmdline')
- `@file' is the way to pass an SQL script to be run (file name is preceded by
an `@' sign).
BUT the code block to be executed is saved by Babel in Windows' TEMP
directory, for example under a file whose full path is:
c:\WINDOWS\TEMP\babel-511607b\sql-in-5116n4J
There is no file extension there. This becomes important... as SQL*Plus seems
to always add the `sql' extension to the script file name, when they don't
have one:
#+begin_src sh
$ sqlplus -S user/pass@server @c\:/WINDOWS/TEMP/babel-511607b/sql-in-5116n4J
^^^^^^^^^^^^^^
SP2-0310: unable to open file "c:/WINDOWS/TEMP/babel-511607b/sql-in-5116n4J.sql"
#+end_src ^^^^^^^^^^^^^^^^^^
If I go and add an `sql' extension to that temporary file, in the file system,
the script is well read and executed:
#+begin_src sql
$ sqlplus -S user/pass@server @c\:/WINDOWS/TEMP/babel-511607b/sql-in-5116n4J.sql
^^^^^^^^^^^^^^^^^^
SELECT * FROM employees
*
ERROR at line 1:
ORA-00942: table or view does not exist
#+end_src
Here, the command is executed, but fails because it's just a sample command,
and there is no such table.
So, in order to get the `sqlplus' engine working, it seems necessary to add
the language extension to the file name hosting temporarily the code snippet.
In a way, it's even cleaner: would we open it under Emacs, we directly get the
proper highlighting, etc. But there was maybe a reason it hadn't been done
that way?
What do you think?
Best regards,
Seb
--
Sebastien Vauban
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