我正在尝试在右侧附加一列
SELECT
'abc' as client,
sum(nested.freq) as freq,
FROM
(
SELECT
uh.route
COUNT(uh.route) as freq
FROM
employee AS up,
hist AS uh
where
up.id = uh.eID
AND uh.PrhEEBankRoute = '123'
GROUP BY
uh.route
) AS nested
LEFT JOIN (
SELECT
'abc' as client,
sum(raw.freq) as total_trans
FROM
(
SELECT
uh.route,
COUNT(uh.route) as freq
FROM
employee AS up,
hist AS uh
where
up.id = uh.eID
GROUP BY
uh.route
) AS raw
) raw2 ON raw2.client = nested.client;
预期的结果是这样的
client | freq | total_trans
abc | 2 | 100
但我收到以下错误:
<块引用>left join 语句没有列 'client'
答案 0 :(得分:1)
第一个子查询,别名为“嵌套”是:
SELECT
uh.route --<< no column called "client"
, COUNT(uh.route) AS freq --<< no column called "client"
FROM employee AS up
, hist AS uh
WHERE up.id = uh.eID
AND uh.PrhEEBankRoute = '123'
GROUP BY uh.route
在连接条件的下一个子查询中,您引用了nested.client
) raw2 ON raw2.client = nested.client;
嵌套子查询中不存在该列,因此错误信息是准确的。