diff --git a/bookeeper/ctx.py b/bookeeper/ctx.py
index 8f5675f..f5172ce 100644
--- a/bookeeper/ctx.py
+++ b/bookeeper/ctx.py
@@ -43,4 +43,4 @@ class Context:
   def sql(self, cmd: str):
     self.dbcur.execute(cmd)
     for row in self.dbcur:
-      print(*row, file=self.ostream)
+      print(*row, file=self.ostream, sep=",")