update readme

danlkv · Jun 3, 2020 · d217dcb · d217dcb
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diff --git a/scratchpad/README.md b/scratchpad/README.md
@@ -2,6 +2,18 @@
 
 `python problem_graph_json.py 30 |mongocat -W -d tensim problem_graphs`
 
+## Count objects in DB
+
+```bash
+
+⟩ mongocat -F -d tensim expr_graphs --query '{"n_qubits":100}' | wc
+      3  259087 1991556
+
+⟩ mongocat -F -d tensim expr_graphs --query '{"n_qubits":100, "extra.p":1}' | wc
+      1   31179  232108
+
+```
+
 # Test
 
 `pytest`