X-Git-Url: http://git.kpe.io/?p=clsql.git;a=blobdiff_plain;f=sql%2Fexpressions.lisp;h=2098cf3e1d33e4cc287f4e8f91db01cebce191b9;hp=2f40e33a6e67f640b107a0a2dc9d444941c9287d;hb=67a677df17f4af2cbf6e57294605f2454c392e00;hpb=b5890c31a60303397efedb2110f46c6388426170

diff --git a/sql/expressions.lisp b/sql/expressions.lisp
index 2f40e33..2098cf3 100644
--- a/sql/expressions.lisp
+++ b/sql/expressions.lisp
@@ -67,7 +67,8 @@
 (defmethod print-object ((self %sql-expression) stream)
   (print-unreadable-object
    (self stream :type t)
-   (write-string (sql-output self) stream)))
+   (write-string (sql-output self) stream))
+  self)
 
 ;; For straight up strings
 
@@ -91,7 +92,8 @@
 (defmethod print-object ((ident sql) stream)
   (format stream "#<~S \"~A\">"
           (type-of ident)
-          (sql-output ident nil)))
+          (sql-output ident nil))
+  ident)
 
 ;; For SQL Identifiers of generic type
 
@@ -354,7 +356,7 @@
 
 (defmethod collect-table-refs ((sql sql-function-exp))
   (let ((tabs nil))
-    (dolist (exp (slot-value sql 'components))
+    (dolist (exp (slot-value sql 'args))
       (let ((refs (collect-table-refs exp)))
         (if refs (setf tabs (append refs tabs)))))
     (remove-duplicates tabs
@@ -692,7 +694,7 @@ uninclusive, and the args from that keyword to the end."
     stmt
     (write-string "DELETE FROM " *sql-stream*)
     (typecase from
-      (symbol (write-string (sql-escape from) *sql-stream*))
+      ((or symbol string) (write-string (sql-escape from) *sql-stream*))
       (t  (output-sql from database)))
     (when where
       (write-string " WHERE " *sql-stream*)
@@ -828,9 +830,8 @@ uninclusive, and the args from that keyword to the end."
 ;; 
 
 (defmethod database-output-sql ((str string) database)
-  (declare (ignore database)
-           (optimize (speed 3) (safety 1) #+cmu (extensions:inhibit-warnings 3))
-           (type (simple-array * (*)) str))
+  (declare (optimize (speed 3) (safety 1)
+		     #+cmu (extensions:inhibit-warnings 3)))
   (let ((len (length str)))
     (declare (type fixnum len))
     (cond ((zerop len)
@@ -840,7 +841,8 @@ uninclusive, and the args from that keyword to the end."
            (concatenate 'string "'" str "'"))
           (t
            (let ((buf (make-string (+ (* len 2) 2) :initial-element #\')))
-             (do* ((i 0 (incf i))
+	     (declare (simple-string buf))
+	     (do* ((i 0 (incf i))
                    (j 1 (incf j)))
                   ((= i len) (subseq buf 0 (1+ j)))
                (declare (type fixnum i j))
@@ -850,7 +852,11 @@ uninclusive, and the args from that keyword to the end."
                         (setf (aref buf j) #\')
                         (incf j)
                         (setf (aref buf j) #\'))
-                       ((char= char #\\)
+                       ((and (char= char #\\)
+                             ;; MTP: only escape backslash with pgsql/mysql 
+                             (member (database-underlying-type database) 
+                                     '(:postgresql :mysql)
+                                     :test #'eq))
                         (setf (aref buf j) #\\)
                         (incf j)
                         (setf (aref buf j) #\\))
@@ -859,11 +865,13 @@ uninclusive, and the args from that keyword to the end."
 
 (let ((keyword-package (symbol-package :foo)))
   (defmethod database-output-sql ((sym symbol) database)
-    (convert-to-db-default-case
-     (if (equal (symbol-package sym) keyword-package)
-	 (concatenate 'string "'" (string sym) "'")
-	 (symbol-name sym))
-     database)))
+  (if (null sym) 
+      +null-string+ 
+      (convert-to-db-default-case
+       (if (equal (symbol-package sym) keyword-package)
+           (concatenate 'string "'" (string sym) "'")
+           (symbol-name sym))
+       database))))
 
 (defmethod database-output-sql ((tee (eql t)) database)
   (declare (ignore database))