不斷更新從另一個表創建的表

Question

在 CrateDB 中，從另一個表的數據創建一個表后，是否可以通過從原始表中插入新行來保持新表的更新？

查詢以從enter code here創建new_table ：

CREATE TABLE "schema"."new_table" AS
SELECT
state,
time,
time - LAG(time, -1, time) OVER (ORDER BY time DESC) AS duration
FROM "schema"."original_table"
ORDER BY timeDESC;

查詢我定期運行以保持new_table更新，我想避免使用：

INSERT INTO "schema"."new_table"
SELECT
process,
time,
time- LAG(time, -1, time) OVER (ORDER BY time DESC) AS duration FROM "mtopcua_car"."original_table" newDataTable
WHERE NOT EXISTS (SELECT time FROM "schema"."new_table" WHERE time = newDataTable.time);

謝謝。

Answer 1

根據查詢的開銷，一個視圖可能就可以完成這項工作：

CREATE VIEW "schema"."new_view" AS
SELECT
    state,
    time,
    time - LAG(time, -1, time) OVER (ORDER BY time DESC) AS duration
FROM "schema"."original_table"
ORDER BY time DESC;

CrateDB 文檔： https://crate.io/docs/crate/reference/en/5.1/general/ddl/views.html