Question

首先，感谢任何可以提供帮助的人。这些年来我做了很多加入的查询，但有些人无法让这个问题起作用。这是我第一次使用Transform / Pivot命令。

查询1：

TRANSFORM Max(price_btc)
SELECT year1, month1, day1, hour1, minute1
FROM HISTORY
WHERE [SYMBOL] = "XRP" OR [SYMBOL] = "EOS" OR [SYMBOL] = "NEO"
GROUP BY year1, month1, day1, hour1, minute1
PIVOT symbol;

查询2：

SELECT year1, month1, day1, hour1, minute1, price_usd
FROM HISTORY
WHERE [symbol] = "BTC"
ORDER BY year1, month1, day1, hour1, minute1;

Query1和Query都可以正常工作。我想可以在year1，month1，day1，hour1，minute1上继续加入这两个查询因此我创建了第三个查询：

查询3：

SELECT *
FROM
(
SELECT year1, month1, day1, hour1, minute1, price_usd
FROM HISTORY
WHERE [symbol] = "BTC"
ORDER BY year1, month1, day1, hour1, minute1
) AS A
LEFT JOIN
(
TRANSFORM MAX(price_btc)
SELECT year1, month1, day1, hour1, minute1
FROM HISTORY
WHERE [SYMBOL] = "XRP" OR [SYMBOL] = "EOS" OR [SYMBOL] = "NEO"
GROUP BY year1, month1, day1, hour1, minute1
PIVOT symbol
) AS B
ON A.year1 = B.year1 AND A.month1 = B.month1 AND A.day1 = B.day1 AND A.hour1 = B.hour1 AND A.minute1 = B.minute1;

但是，这会产生一个错误，指出“FROM子句中的语法错误”

我想上传单个查询结果的excel文件，但似乎无法这样做。

有人可以帮忙吗？非常感谢您的帮助。

Answer 1

在子查询中，访问权限不允许Transform + Pivot。要解决该限制，您需要将交叉表查询存储在单独的查询中，例如：

<强> QUERY3：

TRANSFORM MAX(price_btc)
SELECT year1, month1, day1, hour1, minute1
FROM HISTORY
WHERE [SYMBOL] = "XRP" OR [SYMBOL] = "EOS" OR [SYMBOL] = "NEO"
GROUP BY year1, month1, day1, hour1, minute1
PIVOT symbol

<强> Query4：

SELECT *
FROM
(
SELECT year1, month1, day1, hour1, minute1, price_usd
FROM HISTORY
WHERE [symbol] = "BTC"
ORDER BY year1, month1, day1, hour1, minute1
) AS A
LEFT JOIN
Query3 AS B
ON A.year1 = B.year1 AND A.month1 = B.month1 AND A.day1 = B.day1 AND A.hour1 = B.hour1 AND A.minute1 = B.minute1;

Answer 2

一如既往，在发布问题后我立刻就有了一个想法！ Transform / Pivot动作必须在加入之外发生。此代码段现在有效：

TRANSFORM First(price_btc)
SELECT A.year1, A.month1, A.day1, A.hour1, A.minute1, A.price_usd
FROM 
(
SELECT year1, month1, day1, hour1, minute1, symbol, price_btc
FROM HISTORY
WHERE [SYMBOL] = "XRP" OR [SYMBOL] = "EOS" OR [SYMBOL] = "NEO"
)  
AS B LEFT JOIN 
(
SELECT year1, month1, day1, hour1, minute1, price_usd
FROM HISTORY
WHERE [symbol] = "BTC"
ORDER BY year1, month1, day1, hour1, minute1
)  AS A 
ON (A.minute1 = B.minute1) AND (A.hour1 = B.hour1) AND (A.day1 = B.day1) AND 
(A.month1 = B.month1) AND (A.year1 = B.year1)
GROUP BY A.year1, A.month1, A.day1, A.hour1, A.minute1, A.price_usd
PIVOT [SYMBOL];

访问加入TRANSFORM / PIVOT查询

2 个答案: