在 INSERT、UPDATE、DELETE 操作之后，在 postgressql 中触发 function 不起作用

Question

CREATE OR REPLACE FUNCTION notify_tenant_work_order_status_cud() RETURNS TRIGGER AS $$
DECLARE
row RECORD;
output JSONB;
row_obj JSONB;
payload JSONB;
final_payload JSONB;

BEGIN
-- Checking the Operation Type
IF (TG_OP = 'DELETE') THEN
  row = OLD;
ELSE
  row = NEW;
END IF;

-- Forming the Output as notification. You can choose you own notification.
output = jsonb_build_object('operation', TG_OP);
row_obj = jsonb_build_object('row', to_jsonb(row));
payload = output || row_obj;
final_payload = jsonb_build_object('id', jsonb_extract_path_text(payload, 'row', 'id'), 'operation', jsonb_extract_path_text(payload, 'operation'));

-- Calling the pg_notify for my_table_update event with output as final_payload

PERFORM pg_notify('tenant_work_order_status_cud'::text, final_payload::text);

-- Returning null because it is an after trigger.
RETURN NULL;
END;
$$ LANGUAGE plpgsql;

CREATE TRIGGER trigger_tenant_work_order_status_cud AFTER INSERT OR UPDATE OR DELETE ON tenant_work_order_status FOR EACH ROW EXECUTE PROCEDURE notify_tenant_work_order_status_cud();

当对tenant_work_order_status 表执行任何插入、更新和删除操作时，它应该在tenant_work_order_status_cud() 通道上通知。 它没有按预期工作。

我们在其他表上有相同的触发器，它工作正常。

任何可能的帮助将不胜感激。

Answer 1

确保有效载荷不超过 8000 字节，pg-channel 将只能携带少于 8000 字节。