Paginación de access

sqlquerybuilder/__init__.py

@@ -426,6 +426,31 @@ class SQLCompiler(object):
                     self.get_group_by(),
                     self.get_limits(), ") as tbl_paginated WHERE ", conds]
 
+        if self.sql_mode == "ACCESS" and self._limits and \
+           self._limits.start is not None and self._limits.stop is not None:
+            conds = []
+
+            if self._limits.start is not None:
+                conds.append("row_number > %s" % self._limits.start)
+
+            if self._limits.stop is not None:
+                conds.append("row_number <= %s" % self._limits.stop)
+
+            conds = " AND ".join(conds)
+            count = "(select count(*) FROM {table} as t2 WHERE t2.{id} <= {table}.{id}) as row_number".format(table=table,
+                                                                                                              id=self._order_by[0])
+
+            return ["SELECT * FROM (", "SELECT", self.get_columns(), ",",
+                    count,
+                    # "FROM",
+                    # table,
+                    self.get_joins(),
+                    self.get_where(),
+                    self.get_group_by(),
+                    " FROM ",
+                    table,
+                    ") WHERE ", conds]
+
         return sql
 
     def _compile(self):
@@ -436,7 +461,7 @@ class SQLCompiler(object):
 
     __str__ = __repr__
 
-    @property
+    @ property
     def sql(self,):
         return self.__str__()
 
@@ -450,6 +475,6 @@ class Queryset(SQLCompiler, SQLQuery):
 
 class SQLModel(object):
 
-    @classproperty
+    @ classproperty
     def objects(cls):
         return Queryset(cls.table, getattr(cls, 'sql_mode', None))