我有两个表：
CREATE TABLE "status" (
"id" integer NOT NULL PRIMARY KEY,
"created_at" datetime NOT NULL,
"updated_at" datetime NOT NULL);
CREATE TABLE "device" (
"id" integer NOT NULL PRIMARY KEY,
"created_at" datetime NOT NULL,
"updated_at" datetime NOT NULL,
"last_status_object_id" integer REFERENCES "status" ("id"));
在表“设备”中，last_status_object_id引用status.id。
我想删除“ last_status_object_id”未引用的所有状态行。我似乎无法弄清楚如何做到这一点。谁能帮我吗？
DELETE
status
FROM
status
LEFT JOIN device ON (status.id = last_status_object_id)
WHERE
device.id IS NULL
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