Update more validations

chromadb/api/types.py

@@ -623,9 +623,9 @@ def validate_where(where: Where) -> None:
         # Value is a operator expression
         if isinstance(value, dict):
             # Ensure there is only one operator
-            if len(value) != 1:
+            if len(value) > 1:
                 raise ValueError(
-                    f"Expected operator expression to have exactly one operator, got {value}"
+                    f"Expected operator expression to have at most one operator, got {value}"
                 )
 
             for operator, operand in value.items():
@@ -678,9 +678,9 @@ def validate_where_document(where_document: WhereDocument) -> None:
         raise ValueError(
             f"Expected where document to be a dictionary, got {where_document}"
         )
-    if len(where_document) != 1:
+    if len(where_document) > 1:
         raise ValueError(
-            f"Expected where document to have exactly one operator, got {where_document}"
+            f"Expected where document to have at most one operator, got {where_document}"
         )
     for operator, operand in where_document.items():
         if operator not in ["$contains", "$not_contains", "$and", "$or"]:

chromadb/segment/impl/metadata/grpc_segment.py

@@ -330,9 +330,9 @@ def _where_document_to_proto(
         response = pb.WhereDocument()
         if where_document is None:
             return response
-        if len(where_document) != 1:
+        if len(where_document) > 1:
             raise ValueError(
-                f"Expected where_document to have exactly one operator, got {where_document}"
+                f"Expected where_document to have at most one operator, got {where_document}"
             )
 
         for operator, operand in where_document.items():