我有一个“双重”嵌套的 SELECT 语句。更深层次的语句提取了我尝试插入现有行的每月总计所需的值。但是,每个“段”都有不同的百分比,因此它会导致多行。为了解决这个问题,我有一个外部选择,然后对结果进行 SUM。
更多问题是我无法将结果与月份匹配,因为当我尝试链接到列名称“Enrol_month_short”时,我收到以下消息。
“‘where 子句’中的未知列‘Enrol_month_short’”
SELECT Date_format(tbl_client_details.cd_enrol_date, '%b %y')AS
Enrol_month_short, Sum(tbl_revenue.rev_value) AS
Enrol_Cum_Rev, (SELECT Sum(tbl_revenue.rev_value)
FROM tbl_client_details
LEFT OUTER JOIN gridlock.tbl_revenue
ON tbl_client_details.cd_zbi_no = tbl_revenue.rev_zbi_no
AND tbl_client_details.cd_ucn = tbl_revenue.rev_ucn
WHERE ( Date_format(tbl_client_details.cd_enrol_date, '%b %y') =
enrol_month_short )
AND ( Date_format(rev_month, '%b %y') = enrol_month_short )
GROUP BY Date_format(tbl_client_details.cd_enrol_date, '%b %y')) AS
New_client_rev,
(SELECT Count(tbl_client_details.cd_id)
FROM tbl_client_details
WHERE ( tbl_client_details.cd_enrol_date >= '2012-04-01'
AND tbl_client_details.cd_enrol_date <= '2012-07-31' )
AND Date_format(tbl_client_details.cd_enrol_date, '%b %y') =
enrol_month_short
GROUP BY Date_format(tbl_client_details.cd_enrol_date, '%b %y')) AS
Actual_Enrols,
(SELECT ( ( Sum(tbl_revenue.rev_value) *
( tbl_segment.seg_growth_2012 / 100 ) ) / 12 ) AS YEAR_NEW_BUS_BUDGET
FROM tbl_client_details
LEFT OUTER JOIN tbl_revenue
ON tbl_client_details.cd_zbi_no = tbl_revenue.rev_zbi_no
AND tbl_client_details.cd_ucn = tbl_revenue.rev_ucn
LEFT OUTER JOIN tbl_segment
ON tbl_client_details.cd_segment = tbl_segment.seg_name
WHERE ( rev_month >= '2012-04-01' AND rev_month <= '2012-07-31' )
GROUP BY enrol_month_short) AS
YEAR_NEW_BUS_BUDGET
FROM tbl_client_details
LEFT OUTER JOIN gridlock.tbl_revenue
ON tbl_client_details.cd_zbi_no = tbl_revenue.rev_zbi_no
AND tbl_client_details.cd_ucn = tbl_revenue.rev_ucn
WHERE ( tbl_client_details.cd_enrol_date >= '2012-04-01'
AND tbl_client_details.cd_enrol_date <= '2012-07-31' )
AND ( rev_month >= '2012-04-01'
AND rev_month <= '2012-07-31'
OR rev_month = NULL )
GROUP BY enrol_month_short
ORDER BY tbl_client_details.cd_enrol_date;