不断更新从另一个表创建的表

Question

在 CrateDB 中，从另一个表的数据创建一个表后，是否可以通过从原始表中插入新行来保持新表的更新？

查询以从enter code here创建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;

查询我定期运行以保持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);

谢谢。

Answer 1

根据查询的开销，一个视图可能就可以完成这项工作：

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