Reduce code duplication in ob-sqlite.el and ob-sql.el

* lisp/ob-sqlite.el (org-babel-sqlite-expand-vars): Marked function as obsolete.
* lisp/ob-sql.el (org-babel-sql-expand-vars): Updated to support
expanding sqlite vars.

lisp/ob-sql.el

@@ -350,8 +350,13 @@ SET COLSEP '|'
 	 (org-babel-pick-name (cdr (assq :rowname-names params))
 			      (cdr (assq :rownames params))))))))
 
-(defun org-babel-sql-expand-vars (body vars)
-  "Expand the variables held in VARS in BODY."
+(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
@@ -362,9 +367,11 @@ SET COLSEP '|'
                   (let ((data-file (org-babel-temp-file "sql-data-")))
                     (with-temp-file data-file
                       (insert (orgtbl-to-csv
-                               val '(:fmt (lambda (el) (if (stringp el)
+                               val (if sqlite
+                                       nil
+                                     '(:fmt (lambda (el) (if (stringp el)
                                                       el
-                                                    (format "%S" el)))))))
+                                                    (format "%S" el))))))))
                     data-file)
                 (if (stringp val) val (format "%S" val))))
 	    body)))

lisp/ob-sqlite.el

@@ -27,6 +27,7 @@
 
 ;;; Code:
 (require 'ob)
+(require 'ob-sql)
 
 (declare-function org-table-convert-region "org-table"
 		  (beg0 end0 &optional separator))
@@ -51,8 +52,8 @@
 
 (defun org-babel-expand-body:sqlite (body params)
   "Expand BODY according to the values of PARAMS."
-  (org-babel-sqlite-expand-vars
-   body (org-babel--get-vars params)))
+  (org-babel-sql-expand-vars
+   body (org-babel--get-vars params) t))
 
 (defvar org-babel-sqlite3-command "sqlite3")
 
@@ -112,22 +113,8 @@ This function is called by `org-babel-execute-src-block'."
 
 (defun org-babel-sqlite-expand-vars (body vars)
   "Expand the variables held in VARS in BODY."
-  ;; FIXME: Redundancy with org-babel-sql-expand-vars!
-  (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 "sqlite-data-")))
-                    (with-temp-file data-file
-                      (insert (orgtbl-to-csv val nil)))
-                    data-file)
-                (if (stringp val) val (format "%S" val))))
-	    body)))
-   vars)
-  body)
+  (declare (obsolete "use `org-babel-sql-expand-vars' instead." "Org 9.5"))
+  (org-babel-sql-expand-vars body vars t))
 
 (defun org-babel-sqlite-table-or-scalar (result)
   "If RESULT looks like a trivial table, then unwrap it."