summaryrefslogtreecommitdiff
path: root/elpa/org-9.5.2/ob-sql.el
blob: f512d2952cdca1ca9a196ae47cb68f508f48aca2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
;;; ob-sql.el --- Babel Functions for SQL            -*- lexical-binding: t; -*-

;; Copyright (C) 2009-2021 Free Software Foundation, Inc.

;; Author: Eric Schulte
;; Keywords: literate programming, reproducible research
;; Homepage: https://orgmode.org

;; This file is part of GNU Emacs.

;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.

;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.

;;; Commentary:

;; Org-Babel support for evaluating sql source code.
;; (see also ob-sqlite.el)
;;
;; SQL is somewhat unique in that there are many different engines for
;; the evaluation of sql (Mysql, PostgreSQL, etc...), so much of this
;; file will have to be implemented engine by engine.
;;
;; Also SQL evaluation generally takes place inside of a database.
;;
;; Header args used:
;; - engine
;; - cmdline
;; - dbhost
;; - dbport
;; - dbuser
;; - dbpassword
;; - dbconnection (to reference connections in sql-connection-alist)
;; - dbinstance (currently only used by SAP HANA)
;; - database
;; - colnames (default, nil, means "yes")
;; - result-params
;; - out-file
;;
;; The following are used but not really implemented for SQL:
;; - colname-names
;; - rownames
;; - rowname-names
;;
;; Engines supported:
;; - mysql
;; - dbi
;; - mssql
;; - sqsh
;; - postgresql (postgres)
;; - oracle
;; - vertica
;; - saphana
;;
;; TODO:
;;
;; - support for sessions
;; - support for more engines
;; - what's a reasonable way to drop table data into SQL?
;;

;;; Code:
(require 'ob)

(declare-function org-table-import "org-table" (file arg))
(declare-function orgtbl-to-csv "org-table" (table params))
(declare-function org-table-to-lisp "org-table" (&optional txt))
(declare-function cygwin-convert-file-name-to-windows "cygw32.c" (file &optional absolute-p))
(declare-function sql-set-product "sql" (product))

(defvar sql-connection-alist)
(defvar org-babel-default-header-args:sql '())

(defconst org-babel-header-args:sql
  '((engine	       . :any)
    (out-file	       . :any)
    (dbhost	       . :any)
    (dbport	       . :any)
    (dbuser	       . :any)
    (dbpassword	       . :any)
    (dbinstance	       . :any)
    (database	       . :any))
  "SQL-specific header arguments.")

(defun org-babel-expand-body:sql (body params)
  "Expand BODY according to the values of PARAMS."
  (let ((prologue (cdr (assq :prologue params)))
	(epilogue (cdr (assq :epilogue params))))
    (mapconcat 'identity
               (list
                prologue
                (org-babel-sql-expand-vars
                 body (org-babel--get-vars params))
                epilogue)
               "\n")))

(defun org-babel-edit-prep:sql (info)
  "Set `sql-product' in Org edit buffer.
Set `sql-product' in Org edit buffer according to the
corresponding :engine source block header argument."
  (let ((product (cdr (assq :engine (nth 2 info)))))
    (condition-case nil
        (sql-set-product product)
      (user-error "Cannot set `sql-product' in Org Src edit buffer"))))

(defun org-babel-sql-dbstring-mysql (host port user password database)
  "Make MySQL cmd line args for database connection.  Pass nil to omit that arg."
  (combine-and-quote-strings
   (delq nil
	 (list (when host     (concat "-h" host))
	       (when port     (format "-P%d" port))
	       (when user     (concat "-u" user))
	       (when password (concat "-p" password))
	       (when database (concat "-D" database))))))

(defun org-babel-sql-dbstring-postgresql (host port user database)
  "Make PostgreSQL command line args for database connection.
Pass nil to omit that arg."
  (combine-and-quote-strings
   (delq nil
	 (list (when host (concat "-h" host))
	       (when port (format "-p%d" port))
	       (when user (concat "-U" user))
	       (when database (concat "-d" database))))))

(defun org-babel-sql-dbstring-oracle (host port user password database)
  "Make Oracle command line arguments for database connection.

If HOST and PORT are nil then don't pass them.  This allows you
to use names defined in your \"TNSNAMES\" file.  So you can
connect with

  <user>/<password>@<host>:<port>/<database>

or

  <user>/<password>@<database>

using its alias."
  (cond ((and user password database host port)
	 (format "%s/%s@%s:%s/%s" user password host port database))
	((and user password database)
	 (format "%s/%s@%s" user password database))
	(t (user-error "Missing information to connect to database"))))

(defun org-babel-sql-dbstring-mssql (host user password database)
  "Make sqlcmd command line args for database connection.
`sqlcmd' is the preferred command line tool to access Microsoft
SQL Server on Windows and Linux platform."
  (mapconcat #'identity
	     (delq nil
		   (list (when host (format "-S \"%s\"" host))
			 (when user (format "-U \"%s\"" user))
			 (when password (format "-P \"%s\"" password))
			 (when database (format "-d \"%s\"" database))))
	     " "))

(defun org-babel-sql-dbstring-sqsh (host user password database)
  "Make sqsh command line args for database connection.
\"sqsh\" is one method to access Sybase or MS SQL via Linux platform"
  (mapconcat #'identity
             (delq nil
                   (list  (when host     (format "-S \"%s\"" host))
                          (when user     (format "-U \"%s\"" user))
                          (when password (format "-P \"%s\"" password))
                          (when database (format "-D \"%s\"" database))))
             " "))

(defun org-babel-sql-dbstring-vertica (host port user password database)
  "Make Vertica command line args for database connection.
Pass nil to omit that arg."
  (mapconcat #'identity
	     (delq nil
		   (list (when host     (format "-h %s" host))
			 (when port     (format "-p %d" port))
			 (when user     (format "-U %s" user))
			 (when password (format "-w %s" (shell-quote-argument password) ))
			 (when database (format "-d %s" database))))
	     " "))

(defun org-babel-sql-dbstring-saphana (host port instance user password database)
  "Make SAP HANA command line args for database connection.
Pass nil to omit that arg."
  (mapconcat #'identity
             (delq nil
                   (list (and host port (format "-n %s:%s" host port))
                         (and host (not port) (format "-n %s" host))
                         (and instance (format "-i %d" instance))
                         (and user (format "-u %s" user))
                         (and password (format "-p %s"
                                               (shell-quote-argument password)))
                         (and database (format "-d %s" database))))
             " "))

(defun org-babel-sql-convert-standard-filename (file)
  "Convert FILE to OS standard file name.
If in Cygwin environment, uses Cygwin specific function to
convert the file name.  In a Windows-NT environment, do nothing.
Otherwise, use Emacs' standard conversion function."
  (cond ((fboundp 'cygwin-convert-file-name-to-windows)
	 (format "%S" (cygwin-convert-file-name-to-windows file)))
	((string= "windows-nt" system-type) file)
	(t (format "%S" (convert-standard-filename file)))))

(defun org-babel-find-db-connection-param (params name)
  "Return database connection parameter NAME.
Given a parameter NAME, if :dbconnection is defined in PARAMS
then look for the parameter into the corresponding connection
defined in `sql-connection-alist', otherwise look into PARAMS.
See `sql-connection-alist' (part of SQL mode) for how to define
database connections."
  (if (assq :dbconnection params)
      (let* ((dbconnection (cdr (assq :dbconnection params)))
             (name-mapping '((:dbhost . sql-server)
                             (:dbport . sql-port)
                             (:dbuser . sql-user)
                             (:dbpassword . sql-password)
                             (:dbinstance . sql-dbinstance)
                             (:database . sql-database)))
             (mapped-name (cdr (assq name name-mapping))))
        (cadr (assq mapped-name
                    (cdr (assoc dbconnection sql-connection-alist)))))
    (cdr (assq name params))))

(defun org-babel-execute:sql (body params)
  "Execute a block of Sql code with Babel.
This function is called by `org-babel-execute-src-block'."
  (let* ((result-params (cdr (assq :result-params params)))
         (cmdline (cdr (assq :cmdline params)))
         (dbhost (org-babel-find-db-connection-param params :dbhost))
         (dbport (org-babel-find-db-connection-param params :dbport))
         (dbuser (org-babel-find-db-connection-param params :dbuser))
         (dbpassword (org-babel-find-db-connection-param params :dbpassword))
         (dbinstance (org-babel-find-db-connection-param params :dbinstance))
         (database (org-babel-find-db-connection-param params :database))
         (engine (cdr (assq :engine params)))
         (colnames-p (not (equal "no" (cdr (assq :colnames params)))))
         (in-file (org-babel-temp-file "sql-in-"))
         (out-file (or (cdr (assq :out-file params))
                       (org-babel-temp-file "sql-out-")))
	 (header-delim "")
         (command (cl-case (intern engine)
                    (dbi (format "dbish --batch %s < %s | sed '%s' > %s"
				 (or cmdline "")
				 (org-babel-process-file-name in-file)
				 "/^+/d;s/^|//;s/(NULL)/ /g;$d"
				 (org-babel-process-file-name out-file)))
                    (monetdb (format "mclient -f tab %s < %s > %s"
				     (or cmdline "")
				     (org-babel-process-file-name in-file)
				     (org-babel-process-file-name out-file)))
		    (mssql (format "sqlcmd %s -s \"\t\" %s -i %s -o %s"
				   (or cmdline "")
				   (org-babel-sql-dbstring-mssql
				    dbhost dbuser dbpassword database)
				   (org-babel-sql-convert-standard-filename
				    (org-babel-process-file-name in-file))
				   (org-babel-sql-convert-standard-filename
				    (org-babel-process-file-name out-file))))
                    (mysql (format "mysql %s %s %s < %s > %s"
				   (org-babel-sql-dbstring-mysql
				    dbhost dbport dbuser dbpassword database)
				   (if colnames-p "" "-N")
				   (or cmdline "")
				   (org-babel-process-file-name in-file)
				   (org-babel-process-file-name out-file)))
		    ((postgresql postgres) (format
					    "%s%s --set=\"ON_ERROR_STOP=1\" %s -A -P \
footer=off -F \"\t\"  %s -f %s -o %s %s"
					    (if dbpassword
						(format "PGPASSWORD=%s " dbpassword)
					      "")
                                            (or (bound-and-true-p
                                                 sql-postgres-program)
                                                "psql")
					    (if colnames-p "" "-t")
					    (org-babel-sql-dbstring-postgresql
					     dbhost dbport dbuser database)
					    (org-babel-process-file-name in-file)
					    (org-babel-process-file-name out-file)
					    (or cmdline "")))
		    (sqsh (format "sqsh %s %s -i %s -o %s -m csv"
				  (or cmdline "")
				  (org-babel-sql-dbstring-sqsh
				   dbhost dbuser dbpassword database)
				  (org-babel-sql-convert-standard-filename
				   (org-babel-process-file-name in-file))
				  (org-babel-sql-convert-standard-filename
				   (org-babel-process-file-name out-file))))
		    (vertica (format "vsql %s -f %s -o %s %s"
				     (org-babel-sql-dbstring-vertica
				      dbhost dbport dbuser dbpassword database)
				     (org-babel-process-file-name in-file)
				     (org-babel-process-file-name out-file)
				     (or cmdline "")))
                    (oracle (format
			     "sqlplus -s %s < %s > %s"
			     (org-babel-sql-dbstring-oracle
			      dbhost dbport dbuser dbpassword database)
			     (org-babel-process-file-name in-file)
			     (org-babel-process-file-name out-file)))
		    (saphana (format "hdbsql %s -I %s -o %s %s"
				     (org-babel-sql-dbstring-saphana
				      dbhost dbport dbinstance dbuser dbpassword database)
				     (org-babel-process-file-name in-file)
				     (org-babel-process-file-name out-file)
				     (or cmdline "")))
                    (t (user-error "No support for the %s SQL engine" engine)))))
    (with-temp-file in-file
      (insert
       (pcase (intern engine)
	 (`dbi "/format partbox\n")
         (`oracle "SET PAGESIZE 50000
SET NEWPAGE 0
SET TAB OFF
SET SPACE 0
SET LINESIZE 9999
SET TRIMOUT ON TRIMSPOOL ON
SET ECHO OFF
SET FEEDBACK OFF
SET VERIFY OFF
SET HEADING ON
SET MARKUP HTML OFF SPOOL OFF
SET COLSEP '|'

")
	 ((or `mssql `sqsh) "SET NOCOUNT ON

")
	 (`vertica "\\a\n")
	 (_ ""))
       (org-babel-expand-body:sql body params)
       ;; "sqsh" requires "go" inserted at EOF.
       (if (string= engine "sqsh") "\ngo" "")))
    (org-babel-eval command "")
    (org-babel-result-cond result-params
      (with-temp-buffer
	(progn (insert-file-contents-literally out-file) (buffer-string)))
      (with-temp-buffer
	(cond
	 ((memq (intern engine) '(dbi mysql postgresql postgres saphana sqsh vertica))
	  ;; Add header row delimiter after column-names header in first line
	  (cond
	   (colnames-p
	    (with-temp-buffer
	      (insert-file-contents out-file)
	      (goto-char (point-min))
	      (forward-line 1)
	      (insert "-\n")
	      (setq header-delim "-")
	      (write-file out-file)))))
	 (t
	  ;; Need to figure out the delimiter for the header row
	  (with-temp-buffer
	    (insert-file-contents out-file)
	    (goto-char (point-min))
	    (when (re-search-forward "^\\(-+\\)[^-]" nil t)
	      (setq header-delim (match-string-no-properties 1)))
	    (goto-char (point-max))
	    (forward-char -1)
	    (while (looking-at "\n")
	      (delete-char 1)
	      (goto-char (point-max))
	      (forward-char -1))
	    (write-file out-file))))
	(org-table-import out-file (if (string= engine "sqsh") '(4) '(16)))
	(org-babel-reassemble-table
	 (mapcar (lambda (x)
		   (if (string= (car x) header-delim)
		       'hline
		     x))
		 (org-table-to-lisp))
	 (org-babel-pick-name (cdr (assq :colname-names params))
			      (cdr (assq :colnames params)))
	 (org-babel-pick-name (cdr (assq :rowname-names params))
			      (cdr (assq :rownames params))))))))

(defun org-babel-sql-expand-vars (body vars &optional sqlite)
  "Expand the variables held in VARS in BODY.

If SQLITE has been provided, prevent passing a format to
`orgtbl-to-csv'.  This prevents overriding the default format, which if
there were commas in the context of the table broke the table as an
argument mechanism."
  (mapc
   (lambda (pair)
     (setq body
	   (replace-regexp-in-string
	    (format "$%s" (car pair))
	    (let ((val (cdr pair)))
              (if (listp val)
                  (let ((data-file (org-babel-temp-file "sql-data-")))
                    (with-temp-file data-file
                      (insert (orgtbl-to-csv
                               val (if sqlite
                                       nil
                                     '(:fmt (lambda (el) (if (stringp el)
                                                             el
                                                           (format "%S" el))))))))
                    data-file)
                (if (stringp val) val (format "%S" val))))
	    body)))
   vars)
  body)

(defun org-babel-prep-session:sql (_session _params)
  "Raise an error because Sql sessions aren't implemented."
  (error "SQL sessions not yet implemented"))

(provide 'ob-sql)

;;; ob-sql.el ends here