;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*-
;;;; *************************************************************************
;;;;
;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*-
;;;; *************************************************************************
;;;;
(defmacro defsql (function definition-keys &body body)
`(progn
(defun ,function ,@body)
(let ((symbol (cadr (member :symbol ',definition-keys))))
(setf (gethash (if symbol (symbol-name-default-case symbol) ',function)
(defmacro defsql (function definition-keys &body body)
`(progn
(defun ,function ,@body)
(let ((symbol (cadr (member :symbol ',definition-keys))))
(setf (gethash (if symbol (symbol-name-default-case symbol) ',function)
-(defsql sql-except (:symbol "except") (&rest rest)
- (make-instance 'sql-set-exp
- :operator 'except :sub-expressions rest))
+(defsql sql-except (:symbol "except") (&rest rest)
+ (make-instance 'sql-set-exp
+ :operator 'except :sub-expressions rest))
-(defsql sql-null (:symbol "null") (&rest rest)
- (if rest
- (make-instance 'sql-relational-exp :operator 'is
- :sub-expressions (list (car rest) nil))
+(defsql sql-null (:symbol "null") (&optional not-null-thing)
+ (if not-null-thing
+ (make-instance 'sql-relational-exp :operator 'is
+ :sub-expressions (list not-null-thing nil))
-(defsql sql-not-null (:symbol "not-null") ()
- (make-instance 'sql-value-exp
- :components '|NOT NULL|))
+(defsql sql-not-null (:symbol "not-null") (&optional not-null-thing)
+ (if not-null-thing
+ (make-instance
+ 'sql-relational-exp
+ :operator 'IS
+ :sub-expressions (list not-null-thing
+ (sql-expression :string "NOT NULL")))
+ (sql-expression :string "NOT NULL")))
(error 'sql-user-error :message "SUBSTR must have 3 arguments.")))
(defsql sql-substring (:symbol "substring") (&rest rest)
(if (= (length rest) 3)
(error 'sql-user-error :message "SUBSTR must have 3 arguments.")))
(defsql sql-substring (:symbol "substring") (&rest rest)
(if (= (length rest) 3)
(error 'sql-user-error :message "SUBSTRING must have 3 arguments.")))
(defsql sql-is (:symbol "is") (&rest rest)
(make-instance 'sql-relational-exp
(error 'sql-user-error :message "SUBSTRING must have 3 arguments.")))
(defsql sql-is (:symbol "is") (&rest rest)
(make-instance 'sql-relational-exp
:name (make-symbol (car args)) :args (cdr args)))
(defsql sql-between (:symbol "between") (&rest rest)
:name (make-symbol (car args)) :args (cdr args)))
(defsql sql-between (:symbol "between") (&rest rest)
(error 'sql-user-error :message "BETWEEN must have 3 arguments.")))
(defsql sql-distinct (:symbol "distinct") (&rest rest)
(error 'sql-user-error :message "BETWEEN must have 3 arguments.")))
(defsql sql-distinct (:symbol "distinct") (&rest rest)
(make-instance 'sql-function-exp
:name 'coalesce :args rest)
(error 'sql-user-error :message "NVL accepts exactly 2 arguments.")))
(defsql sql-userenv (:symbol "userenv") (&rest rest)
(make-instance 'sql-function-exp
(make-instance 'sql-function-exp
:name 'coalesce :args rest)
(error 'sql-user-error :message "NVL accepts exactly 2 arguments.")))
(defsql sql-userenv (:symbol "userenv") (&rest rest)
(make-instance 'sql-function-exp