Zero-length dimensions are not accepted by Postgres.

James William Pye · James William Pye · commit af0156421eb7 · 2009-10-22T15:11:11.000-07:00
diff --git a/postgresql/protocol/typio.py b/postgresql/protocol/typio.py
@@ -512,6 +512,7 @@ def pack_an_array(data):
 				pack_array_elements(data.elements)
 			))
 	else:
+		# signals string formatting
 		pack_an_array = None
 
 	if hasbin_output:
@@ -532,6 +533,7 @@ def unpack_an_array(data):
 				dimensions = dim
 			)
 	else:
+		# signals string formatting
 		unpack_an_array = None
 
 	return (pack_an_array, unpack_an_array)
diff --git a/postgresql/types.py b/postgresql/types.py
@@ -566,12 +566,12 @@ def detect_dimensions(hier):
 					yield x
 				break
 			l = len(hier)
-			yield l
 			if l > 0:
 				# boundary consistency checks come later.
 				hier = hier[0]
 			else:
 				break
+			yield l
 
 	@classmethod
 	def from_nest(typ, nest, offset = None):
