Fix boolean type not recognized warning (#140)

* Fix foreign key reflection when there are tables with the same name in different schemas
Signed-off-by: Xnot <28331593+Xnot@users.noreply.github.com>

* Fix boolean type not recognized warning
Signed-off-by: Xnot <28331593+Xnot@users.noreply.github.com>

Author: Xnot

ibm_db_sa/base.py

@@ -154,6 +154,10 @@ def process(value):
         return process
 
 
+class BOOLEAN(sa_types.Boolean):
+    __visit_name__ = 'BOOLEAN'
+
+
 class DOUBLE(sa_types.Numeric):
     __visit_name__ = 'DOUBLE'
 
@@ -190,6 +194,7 @@ class XML(sa_types.Text):
 }
 
 ischema_names = {
+    'BOOLEAN': BOOLEAN,
     'BLOB': BLOB,
     'CHAR': CHAR,
     'CHARACTER': CHAR,