[英]PostgreSQL Select Columns Then Add Random Value
解決了! 感謝Gordon Linoff!
是否可以在PostgreSQL中獲得這樣的查詢結果?
UserName | Count |
Sukri | 1 |
Azis | 2 |
Adit | 1 |
Total | 4 |
行“總計”值是3列的總和。
SELECT
CASE
WHEN (res."UserName"IS NULL OR res."UserName" = '') THEN 'TOTAL'
ELSE res."UserName"
END AS "UserName",
res."Count"
FROM
(
SELECT "UserName", count("UserName") AS "Count"
FROM "Ticket"
GROUP BY GROUPING SETS ( ("UserName"), () ) ORDER BY "UserName"
) AS res
我想這是一個聚合查詢。 如果是這樣,請使用grouping sets
(或rollup
):
select coalesce(username, 'Total') as userid, count(*) as cnt
from t
group by grouping sets ( (username), () );
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