[英]Group By in Oracle
在Oracle中如何使用group by? 我已經嘗試了幾個小時,但我仍然不知道為什么我收到此錯誤。 原始sql是無處不在的。 我正在嘗試將其轉換為oracle。
我得到的錯誤是:
ORA-00904: "SHA": invalid identifier
00904. 00000 - "%s: invalid identifier"
這是我的查詢:
SELECT
CASE
WHEN (pch + pk) > 999999999
THEN 'j-9999 and OVER'
WHEN (pch + pk) >= 1000000
THEN 'i-1, < 999'
END AS SHA,
SUM(pch + pk) AS TOTALSHA
FROM hold, pos
WHERE hold.ho = pos.pho AND (pch + pk) > 0
GROUP BY SHA;
您無法對輸出值進行分組。 重復表達式:
SELECT
CASE
WHEN (pch + pk) > 999999999
THEN 'j-9999 and OVER'
WHEN (pch + pk) >= 1000000
THEN 'i-1, < 999'
END AS SHA,
SUM(pch + pk) AS TOTALSHA
FROM hold, pos
WHERE hold.ho = pos.pho AND (pch + pk) > 0
GROUP BY CASE
WHEN (pch + pk) > 999999999
THEN 'j-9999 and OVER'
WHEN (pch + pk) >= 1000000
THEN 'i-1, < 999'
END;
或者,在子查詢中計算值並將結果分組:
SELECT
SHA,
SUM(pch + pk) AS TOTALSHA
FROM (
SELECT
CASE
WHEN (pch + pk) > 999999999
THEN 'j-9999 and OVER'
WHEN (pch + pk) >= 1000000
THEN 'i-1, < 999'
END AS SHA,
pch,
pk
FROM hold, pos
WHERE hold.ho = pos.pho AND (pch + pk) > 0
) AS X
GROUP BY SHA
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