Switch to blanking tombstoned data with null, not empty string.

This accomplishes two things:

* It removes the need for an additional `channel_name_reservation` table, since `channel.name` now only contains non-null values for active channels, and
* It nicely dovetails with the idea that `null` means an unknown value in SQL-land.

1 files changed, 50 insertions, 0 deletions

diff --git a/.sqlx/query-647c3387fd01747b6318b946d2ea19a3007558abe81a1635c64ef7960acd30b2.json b/.sqlx/query-647c3387fd01747b6318b946d2ea19a3007558abe81a1635c64ef7960acd30b2.json
new file mode 100644
index 0000000..f706f81
--- /dev/null
+++ b/.sqlx/query-647c3387fd01747b6318b946d2ea19a3007558abe81a1635c64ef7960acd30b2.json
@@ -0,0 +1,50 @@
+{
+  "db_name": "SQLite",
+  "query": "\n                select\n                    channel.id as \"id: Id\",\n                    channel.name,\n                    channel.created_at as \"created_at: DateTime\",\n                    channel.created_sequence as \"created_sequence: Sequence\",\n                    deleted.deleted_at as \"deleted_at?: DateTime\",\n                    deleted.deleted_sequence as \"deleted_sequence?: Sequence\"\n                from channel\n                left join channel_deleted as deleted\n                    using (id)\n                left join message\n                where channel.created_at < $1\n                    and message.id is null\n                    and deleted.id is null\n            ",
+  "describe": {
+    "columns": [
+      {
+        "name": "id: Id",
+        "ordinal": 0,
+        "type_info": "Text"
+      },
+      {
+        "name": "name",
+        "ordinal": 1,
+        "type_info": "Text"
+      },
+      {
+        "name": "created_at: DateTime",
+        "ordinal": 2,
+        "type_info": "Text"
+      },
+      {
+        "name": "created_sequence: Sequence",
+        "ordinal": 3,
+        "type_info": "Integer"
+      },
+      {
+        "name": "deleted_at?: DateTime",
+        "ordinal": 4,
+        "type_info": "Text"
+      },
+      {
+        "name": "deleted_sequence?: Sequence",
+        "ordinal": 5,
+        "type_info": "Integer"
+      }
+    ],
+    "parameters": {
+      "Right": 1
+    },
+    "nullable": [
+      false,
+      true,
+      false,
+      false,
+      false,
+      false
+    ]
+  },
+  "hash": "647c3387fd01747b6318b946d2ea19a3007558abe81a1635c64ef7960acd30b2"
+}