[英]Is there a way to reuse a window in teradata?
我想在一個查詢中多次重用相同的窗口定義。
Postgres這樣做:
SELECT sum(salary) OVER w, avg(salary) OVER w
FROM empsalary
WINDOW w AS (PARTITION BY depname ORDER BY salary DESC);
teradata是否具有等效的功能?
在TD中沒有等效的窗口功能,每次都必須編寫窗口
SELECT sum(salary) OVER (PARTITION BY depname ORDER BY salary DESC), avg(salary) OVER (PARTITION BY depname ORDER BY salary DESC)
FROM empsalary;
有關窗口功能的一些文檔:
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