Create and use Reachable primitive

.sqlx/query-dcd37f22be87b31a7edaba2c4225d3ddfb9802c532102036e1d2ec3cd1adc51f.json

@@ -0,0 +1,32 @@
+{
+  "db_name": "SQLite",
+  "query": "SELECT hash, message, reachable AS \"reachable: Reachable\" FROM commits JOIN queue USING (hash) WHERE hash = ? ",
+  "describe": {
+    "columns": [
+      {
+        "name": "hash",
+        "ordinal": 0,
+        "type_info": "Text"
+      },
+      {
+        "name": "message",
+        "ordinal": 1,
+        "type_info": "Text"
+      },
+      {
+        "name": "reachable: Reachable",
+        "ordinal": 2,
+        "type_info": "Int64"
+      }
+    ],
+    "parameters": {
+      "Right": 1
+    },
+    "nullable": [
+      false,
+      false,
+      false
+    ]
+  },
+  "hash": "dcd37f22be87b31a7edaba2c4225d3ddfb9802c532102036e1d2ec3cd1adc51f"
+}