带有静态列的交叉表

Question

如何在交叉表中创建静态列/行？见下面的例子；我可以有一个固定的 jan、feb、march、... 列而不是动态生成吗？

location       jan   feb   mar   apr   may   jun   jul   aug   sep   oct   nov   dec 
london         500   62    200   50    0     60    100   46    89    200   150   210
paris          50    26    20    500   50    70    40    200   0     40    250   50

我希望列 (jan, feb, mar, apr, ...) 始终显示，无论它们的度量值是零还是有值。就像它们是固定的一样。

这是我正在使用的查询：

select sum("AMOUNT"), "REQUESTDATE","description" 
from(
SELECT SUM(e.AMOUNT)"AMOUNT",TO_CHAR(REQUESTDATE,'MM')"REQUESTDATE", CA.DESCR "description"
FROM PC_PAYMENTTRXNLOG PC,GLB_TYPE ca, PC_ESERVICEINQUIRY e
where PC.ESERVICE_ID = E.ID 
AND trunc(REQUESTDATE) between trunc(to_date('2012-01-01','yyyy-mm-dd')) and trunc(to_date('2012-06-30','yyyy-mm-dd'))
GROUP BY TO_CHAR(REQUESTDATE,'MM'),CA.DESCR 
 )
group by "REQUESTDATE","description"

和输出

    SUM("amount") Requestdate    Description
    2550405         04           A
    2550405         04           B
    23893281        05           C
    614977          06           A
    614977          06           E
    2550405         04           C

现在将查询更新为

  select sum("AMOUNT"), month,"description" 
  from(
  SELECT SUM(e.AMOUNT)"AMOUNT",TO_CHAR(REQUESTDATE,'MM')"REQUESTDATE", CA.DESCR "description"
  FROM PC_PAYMENTTRXNLOG PC,GLB_TYPE ca, PC_ESERVICEINQUIRY e
  where PC.ESERVICE_ID = E.ID 
  AND trunc(REQUESTDATE) between trunc(to_date('2012-01-01','yyyy-mm-dd')) and trunc(to_date('2012-06-30','yyyy-mm-dd'))
  GROUP BY TO_CHAR(REQUESTDATE,'MM'),CA.DESCR 
   ) 
 full outer join (select to_char(date '1970-01-01'
+ numtoyminterval(level - 1, 'month'), 'mm') as month
  from dual
  connect by level <= 12) on month="REQUESTDATE"
  group by month,"description"

当运行查询时，它会显示所有月份，无论它们的度量是零还是有值。

但是现在的输出是这样的

location       jan   feb   mar   apr   may   jun   jul   aug   sep   oct   nov   dec 
london         500   62    200   50    0     60    100   46    89    200   150   210
paris          50    26    20    500   50    70    40    200   0     40    250   50
null            0     0     0     0     0     0     0     0    0      0     0     0

如何限制/隐藏最后一个空行？

Answer 1

没有测试过..但是试试这样的

select sum("AMOUNT"), month,"description" 
from(SELECT SUM(e.AMOUNT)"AMOUNT",TO_CHAR(REQUESTDATE,'MM')"REQUESTDATE", CA.DESCR "description"
FROM PC_PAYMENTTRXNLOG PC,GLB_TYPE ca, PC_ESERVICEINQUIRY e
where PC.ESERVICE_ID = E.ID 
AND trunc(REQUESTDATE) between trunc(to_date('2012-01-01','yyyy-mm-dd')) and trunc(to_date('2012-06-30','yyyy-mm-dd'))
GROUP BY TO_CHAR(REQUESTDATE,'MM'),CA.DESCR 
 ) 
full outer join (select to_char(date '1970-01-01'
+ numtoyminterval(level - 1, 'month'), 'mm') as month
from dual
connect by level <= 12) on month="REQUESTDATE"
group by month,"description"

点击这里查看SQL Fiddle在Oracle中生成1到12的演示

一旦你生成了这个.. full external join 你的主查询和这个系列查询，并从系列查询中取一个月，就像我在主查询中所做的那样。

使用此查询，您将获得所有月份的所有数据，其中包含 null 值。

对于Description 列 - iReport 将属性的 isRemoveLineWhenBlank 和 isBlankWhenNull 设置为 True，这将删除 iReport 中打印的空值

对于Measure，以这样的方式使用Print when expression，当描述为空时返回false。所以这将阻止值0 在 iReport 中打印。